Monday, November 27, 2023, 16:09  Roughing

Monday, November 27, 2023, 17:22 Both turbos are on, leaving vacuum over night.

Tuesday, November 28, 2023, 09:28  after pumping over night IG1 is at .15e-6 T. Water cooling on.

Tuesday, November 28, 2023, 14:34  HV test started. Sparks on the TC seen at BIAS/EE/EZL 31/-1.8/15kV. TC values recovered after sparks, TP6 tripped during sparks as well. Venting chamber to reposition TC.

Tuesday, November 28, 2023, 17:37 I couldn't manage to close properly the side door of the chamber... waiting for help tomorrow.

Wednesday, November 29, 2023, 10:51 Roughing started earlier in the morning. IG1 at 1e-5 T. Ramping up bias.

Wednesday, November 29, 2023, 11:41 HV tests lead to 45kV sparks on the TC. Nothing seen on the RPi.

Wednesday, November 29, 2023, 13:22 The ballast of TMSRP2 was opened to attempt to improve the roughing in the beam line section. Things appear to be somehow better now, TMSTP6 and TMSTP2 are on now.

Wednesday, November 29, 2023, 16:00 IG1 is at 3.58e-6. HV tests starting again.

Wednesday, November 29, 2023, 23:36 HV tests ended earlier in the afternoon. No spark up to 55kV when gauge in the HV cage started sparking as usual.

Wednesday, November 29, 2023, 23:38 TGHT and TBHT ramp up in preparation of mass scans in the morning. 1A/30s up to TGHT:400A, TBHT:160A

Thursday, November 30, 2023, 09:05  TGHT and TBHT ramp up in preparation of mass scans in the morning. 1A/30s up to TGHT:580A, TBHT:230A

Thursday, November 30, 2023, 12:12 Mass scans started earlier in the morning. 1st scan completed at 0.1A/s, repeating it again now with 0.05A/s.

Thursday, November 30, 2023, 15:04 HV tests again up to 55kV. 2 sparks inside the vacuum, to be checked if they affected TC measurement with the pi. Gauge still sparks in the upper HV cage.

Friday, December 01, 2023, 12:05.  Error saving mass scan data Thursday. Repeating mass scans at 0.02,0.01,0.005 scan speeds. note* must delete old data prior to saving. -> save procedure: Delete Old Data, Right click plot, save as plot.txt, click Clean, Show/Save Data, enter file name and save. Filenames: 2023-12-01-* 

Friday, December 01, 2023, 15:22.  Spent some time selectively tuning various elements of the beam. Report in local folder, file "2023-12-01 beam tuning".

Friday, December 01, 2023, 15:23. Recording mass scan with inactive quadrupole elements. File name 2023-12-01_Q-off.txt

Sunday, December 03, 2023, 22:02 : Vacuum looks good.  4e-7 T.   Heating up target for Monday morning. 1A/30s up to TGHT:580A, TBHT:230A

Monday, December 04, 2023, 12:21: This morning, increased BIAS to 30kV. Ran mass scan with adjusted beam tune up to FC0. This mass scan was repeated with inactive quadrupole elements up to FC0 to compare with Friday.  2023-12-02_RBsalt_SIS_test1.txt and 2023-12-02_RBsalt_SIS_test2.txt

Tuesday, December 05, 2023, 14:12 HV tests restarted, TC wire brought closer to the ground wall. IG1 at 2.3e-6 T. Ramping up HV.

Wednesday, December 06, 2023, 13:48 Both yesterday and today the TC wire was not close enough to spark even at 60kV. Venting the chamber one more time to bring the TC closer. 

Thursday, December 07, 2023, 10:18 Vacuum at 5e-7T we see sparks at about 47kV. Lost control of epics during sparks, PS shut off manually. Everything recovered after.

Thursday, December 07, 2023, 13:32 After spark tests at ~55kV, Pi seems not to be affected by the sparks. Tests without the power surge components yielded similar results. We discovered that the sparks on the TC are partially diverted by spark gaps and probably other elements in the top HV cage.

 Monday, December 11, 2023, 10:35 Turbopumps winding down.

 https://elog.triumf.ca/TIS/Target+Production/146

Has not run through EVAP2.

Friday, September 20, 2024, 14:04: Roughing.

Friday, September 20, 2024, 14:39: TP1B on

Friday, September 20, 2024, 14:45: TP1A on. 

Friday, September 20, 2024, 14:54: TP1A at speed. IG1 on. 

Monday, September 23, 2024, 16:38   Water cooling on. no effect on vacuum pressure. Pressure at 6.0e-7T

Monday, September 23, 2024, 17:00  Ramping TGHT and TBHT to 580/230A at 1A/30s 

Tuesday, September 24, 2024, 08:58 TGHT at 502A. Ramping program preventing further ramp up do to 'good vacuum' restriction at 1e-6T as outgassing is pushing up the chamber pressure. Increased good vacuum parameter to 5e-6T, resuming ramp up to 580A at 1A/30s.

 Tuesday, September 24, 2024, 11:12:   TGHT TBHT at 580/230A. Increasing BIAS/EZL/EE to 30/13/2.5 kV slowly.

Tuesday, September 24, 2024, 14:16:   mass scan at high voltage completed - 2024-09-24--14-11 LP-Ta-24C - scan 1

Tuesday, September 24, 2024, 14:17     background signal recording problem persists, despite channel change conducted with controls team and Keiko - will continue to investigate switching to current integrators

Tuesday, September 24, 2024, 14:17  ramping up HV BIAS to 50kV for conditioning, alongside increased EZL voltage

Tuesday, September 24, 2024, 17:00  BIAS was stable at 50kV for 30min. no noticeable sparking.   

also noted that the mass scan data was saved incorrectly. however, there are multiple screen captures of the mass scan which clearly detail which peaks are present.

HV elements decreased to zero and target was left hot overnight for outgassing and so beam content can be re-evaluated

Wednesday, September 25, 2024, 10:24    increasing BIAS/EZL/EE to 30/13/2.5 kV slowly.

Wednesday, September 25, 2024, 13:25    two mass scans conducted:  2024-09-25--12-39 LP-Ta-24C - scan 2,   2024-09-25--13-22 LP-Ta-24C - scan 3

Wednesday, September 25, 2024, 13:26   ramping down high voltages. 

Thermocouples installed:

O - O

O - Anode

O - X

X - X

X - O

Multi-pin left side w/ TGHT left end cap thermocouple. TS1 on datalogger

Multi-pin right side w Center Block thermocouple. TS2 on datalogger

Megger check ok. Thermocouples checked with a heat gun ok.

Using CTL FEBIAD for thermocouple access. Gas line running into ion source. Anode is run under the coil w/ source cup modification. No welding. 1mm PE spacer installed. 3 layers of Ta foil added to the HP-FEBIAD-CTL.

Tuesday, December 06, 2022, 11:13: Roughing.

Tuesday, December 06, 2022, 11:56: TP1B on.

Tuesday, December 06, 2022, 12:02: IG1 on. TP1A on.

Tuesday, December 06, 2022, 14:57: Vacuum @ 8.98e-06T.

Tuesday, December 06, 2022, 15:06: Waterline FS#5 open. 8.59e-06T

Tuesday, December 06, 2022, 15:09: Gas line pressurized with argon. SV5 opened.

Tuesday, December 06, 2022, 15:10: No change on vacuum pressure. SV5 closed.

Wednesday, December 07, 2022, 08:14: Power  / Sources on.

Wednesday, December 07, 2022, 08:16: Vacuum @ 2.68e-06T Open SV5. Vacuum remains stable.

Wednesday, December 07, 2022, 08:21: Optics set - Timed out TMS:Q5 & TMS:Q3 re-configured - reset

Wednesday, December 07, 2022, 08:23: TGHT / TBHT / Coil manually set @ 10 / 10 / 5 A. Ok.

Wednesday, December 07, 2022, 08:25: BIAS / EE / EZL @ 1 / -0.5 / 1 kV. Anode to 100 V. Ok.

Wednesday, December 07, 2022, 08:37: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. 1 spark between 27-28 kV while tapping up.

Wednesday, December 07, 2022, 10:28: BIAS / EE / EZL @ 35 / -1.8 / 15 kV. 

Wednesday, December 07, 2022, 10:35: BIAS / EE / EZL @ 40 / -2.0 / 17 kV. Two sparks occurred while taping up.

Wednesday, December 07, 2022, 10:59: HV reduced. BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Wednesday, December 07, 2022, 11:06: 27.0C - 66.0C Begin coil tap. Vacuum @ 2.59e-06T

Wednesday, December 07, 2022, 11:25: 27.8C - 67.8C. Coil to 80 A. Vacuum @ 2.96e-06T.

Wednesday, December 07, 2022, 11:38: 29.0C - 67.6C. Vacuum @ 3.23e-06T.

Wednesday, December 07, 2022, 11:41: Coil @ 0A.

Wednesday, December 07, 2022, 11:43: Anode @ 200V

Wednesday, December 07, 2022, 11:46: Anode @ 300V

Wednesday, December 07, 2022, 11:48: Anode - BIAS spark @ 364V while tapping up. Anode current jumped from 0 mA to 3.66mA

Wednesday, December 07, 2022, 11:49: Anode @ 400V. Anode Current @ 4.884 mA

Wednesday, December 07, 2022, 11:55: Anode @ 500V. Anode Current @ 6.105 mA

Wednesday, December 07, 2022, 13:05: Auto-ramping TGHT / TBHT to 25 / 25 A @ 2 A per min.

Wednesday, December 07, 2022, 13:08: IV4 Open.

Wednesday, December 07, 2022, 13:23: Auto-ramping TGHT / TBHT to 50 / 50 A @ 2 A per min.

Wednesday, December 07, 2022, 13:39: Auto-ramping TGHT / TBHT to 100 / 50 A @ 2 A per min.

Wednesday, December 07, 2022, 14:12: Auto-ramping TGHT / TBHT to 120 / 70 A @ 2 A per min.

Wednesday, December 07, 2022, 14:24: Auto-ramping TGHT / TBHT to 140 / 90 A @ 2 A per min.

Wednesday, December 07, 2022, 14:37: Auto-ramping TGHT / TBHT to 150 / 100 A @ 2 A per min.

Thursday, December 08, 2022, 08:06: Auto-ramping TGHT / TBHT to 170 / 120 A @ 2 A per min.

Thursday, December 08, 2022, 08:19: Auto-ramping TGHT / TBHT to 190 / 140 A @ 2 A per min.

Thursday, December 08, 2022, 08:36: Auto-ramping TGHT / TBHT to 210 / 160 A @ 2 A per min.

Thursday, December 08, 2022, 08:52: Auto-ramping TGHT / TBHT to 230 / 180 A @ 2 A per min.

Thursday, December 08, 2022, 09:09: Anode @ 100 V

Thursday, December 08, 2022, 09:11: Auto-ramping TGHT / TBHT to 250 / 200 A @ 2 A per min.

Thursday, December 08, 2022, 09:23: Auto-ramping TGHT / TBHT to 270 / 220 A @ 2 A per min.

Thursday, December 08, 2022, 09:38: Auto-ramping TGHT / TBHT to 290 / 230 A @ 2 A per min.

Thursday, December 08, 2022, 09:52: Auto-ramping TGHT / TBHT to 310 / 250 A @ 2 A per min.

Thursday, December 08, 2022, 10:05: Auto-ramping TGHT / TBHT to 330 / 270 A @ 2 A per min.

Thursday, December 08, 2022, 10:19: Auto-ramping TGHT 350 A @ 2 A per min.

Thursday, December 08, 2022, 10:43: Auto-ramping TGHT 370 A @ 2 A per min. Pyrometer is setup. Reading @ 1067.9C.

Thursday, December 08, 2022, 10:56: Auto-ramping TGHT 390 A @ 2 A per min.

Thursday, December 08, 2022, 11:09: Auto-ramping TGHT 400 A @ 2 A per min.

Thursday, December 08, 2022, 12:06: Auto-ramping TGHT 420 A @ 2 A per min.

Thursday, December 08, 2022, 12:19: Auto-ramping TGHT 440 A @ 2 A per min.

Thursday, December 08, 2022, 12:34: Auto-ramping TGHT 460 A @ 2 A per min.

Thursday, December 08, 2022, 12:46: Auto-ramping good vacuum limit reached. TGHT @ 453 A. Vacuum @ 5.12e-06T.

Thursday, December 08, 2022, 13:00: TGHT @ 460 A. Vacuum @ 4.95e-06T

Thursday, December 08, 2022, 13:15: Auto-ramping TGHT 470 A @ 2 A per min.

Friday, December 09, 2022, 06:54: Auto-ramping TGHT 490 A @ 2 A per min. Vacuum @ 2.33e-06T.

Friday, December 09, 2022, 07:08: Auto-ramping TGHT 510 A @ 2 A per min

Friday, December 09, 2022, 07:23: Auto-ramping TGHT 530 A @ 2 A per min

Friday, December 09, 2022, 07:36: Auto-ramping TGHT 550 A @ 2 A per min

Friday, December 09, 2022, 07:50: Auto-ramping TGHT 570 A @ 2 A per min

Friday, December 09, 2022, 08:07: Auto ramping TGHT / TBHT to 580 / 290 A @ 2A per min.

Friday, December 09, 2022, 08:50: Coil @ 10A - Anode @ 200 V

Friday, December 09, 2022, 10:14: Coil manually tapped up to 50 A

Friday, December 09, 2022, 10:20: Anode to 400 V.

Friday, December 09, 2022, 10:27: Vacuum @ 6.70e-06T

Friday, December 09, 2022, 12:51: Auto-cooling TGHT to 480 A @ 2 A per min

Friday, December 09, 2022, 13:59: Auto-cooling TBHT to 230 A @ 2 A per min

Friday, December 09, 2022, 14:26: Stopped TBHT auto-cooling at 255 A

Friday, December 09, 2022, 14:46 : Auto-ramping TBHT to 290 @ 2 A per min

Friday, December 09, 2022, 15:25 : Auto-ramping TGHT to 580 @ 5 A per min

Friday, December 09, 2022, 16:16 : Auto-cooling TGHT & TBHT to 0 @ 2 A per min

Friday, December 09, 2022, 16:38: Ramped down Anode Voltage to 94 V and coil current to 44.05 A

Monday, December 12, 2022, 08:11: Coil @ 0 A. HV @ 0 V.

Monday, December 12, 2022, 08:15: IV4 closed. SV5 closed. Sources off.

Monday, December 12, 2022, 10:09: IG1 off. TP off.

Monday, December 12, 2022, 11:17: Venting.

Thermocouples installed (X):

O - O

O - Anode

O - X

O - X

O - O

Megger check ok. Thermocouples checked with a heat gun ok.

Using CTL FEBIAD for thermocouple access. Gas line running into ion source. Anode is run under the coil w/ source cup modification. No welding. 1mm PE spacer installed. 3 layers of Ta foil added to the HP-FEBIAD-CTL on the center block. Edge fins exposed.

Tuesday, December 13, 2022, 16:10: Roughing.

Tuesday, December 13, 2022, 16:40: TP1 B on.

Tuesday, December 13, 2022, 16:49: TP1 A on.

Tuesday, December 13, 2022, 16:58: IG1 on Vacuum @ 7.00e-05T & dropping.

Wednesday, December 14, 2022, 06:49: Waterline FS#5 opened. Vacuum @ 2.42e-06T.

Wednesday, December 14, 2022, 06:53: Power / Sources / Optics on.

Wednesday, December 14, 2022, 06:54: BIAS / EE / EZL / Anode to 1 / 0.5 1 / 0.1 kV.

Wednesday, December 14, 2022, 06:59: TGHT / TBHT / Coil @ 10 A.

Wednesday, December 14, 2022, 07:19: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Wednesday, December 14, 2022, 07:21: BIAS / EE / EZL @ 35 / -1.8 / 15 kV. 

Wednesday, December 14, 2022, 07:23: BIAS / EE / EZL @ 40 / -2.0 / 17 kV.

Wednesday, December 14, 2022, 07:47: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. No sparks.

Wednesday, December 14, 2022, 07:49: Auto-ramping TGHT / TBHT to 25 / 25 A @ 2 A per min

Wednesday, December 14, 2022, 07:52: IV4 open.

Wednesday, December 14, 2022, 08:01: Auto-ramping TGHT / TBHT to 50 / 50 A @ 2 A per min

Wednesday, December 14, 2022, 09:05: Auto-ramping TGHT / TBHT to 100 / 50 A @ 2 A per min

Wednesday, December 14, 2022, 09:49 : Auto-ramping TGHT & TBHT to 200 A & 100 A @ 2A er min

Wednesday, December 14, 2022, 10:49 :Auto-ramping TGHT & TBHT to 220 A & 120 A @ 2A er min

Wednesday, December 14, 2022, 11:05 :Auto-ramping TGHT & TBHT to 240 A & 140 A @ 2A er min

Wednesday, December 14, 2022, 11:19 :Auto-ramping TGHT & TBHT to 260 A & 160 A @ 2A er min

Wednesday, December 14, 2022, 11:33 :Auto-ramping TGHT & TBHT to 280 A & 180 A @ 2A er min

Wednesday, December 14, 2022, 11:48 :Auto-ramping TGHT & TBHT to 300 A & 200 A @ 2A er min

Wednesday, December 14, 2022, 12:05 :Auto-ramping TGHT & TBHT to 320 A & 220 A @ 2A er min

Wednesday, December 14, 2022, 12:29: Auto-ramping TGHT & TBHT to 340 A & 240 A @ 2A er min

Wednesday, December 14, 2022, 13:08 : Auto-ramping TGHT & TBHT to 360 A & 260 A @ 2A er min

Wednesday, December 14, 2022, 13:14 : Pyrometer reading shows up after adjustment in focussing

Wednesday, December 14, 2022, 13:22 : Auto-ramping TGHT & TBHT to 380 A & 270 A @ 2A er min

Wednesday, December 14, 2022, 13:35 : Auto-ramping TGHT to 400 A @ 2A per min

Wednesday, December 14, 2022, 13:49: Auto-ramping TGHT to 420 A @ 2 A per min.

Wednesday, December 14, 2022, 14:01: Auto-ramping TGHT to 440 A @ 2 A per min.

Wednesday, December 14, 2022, 14:16: Auto-ramping TGHT to 460 A @ 2 A per min.

Wednesday, December 14, 2022, 14:31: Auto-ramping TGHT to 480 A @ 2 A per min.

Wednesday, December 14, 2022, 14:44: Auto-ramping TGHT to 500 A @ 2 A per min.

Wednesday, December 14, 2022, 14:56: Auto-ramping TGHT to 520 A @ 2 A per min.

Wednesday, December 14, 2022, 15:08: Auto-ramping TGHT to 540 A @ 2 A per min.

Wednesday, December 14, 2022, 15:21: Auto-ramping TGHT to 560 A @ 2 A per min.

Wednesday, December 14, 2022, 15:35 : Auto-ramping TGHT & TBHT to 580 A & 290 A @ 2A er min

Wednesday, December 14, 2022, 16:08 : Auto-ramping TGHT to 600 A @ 2 A per min.

Thursday, December 15, 2022, 10:00 : Auto-ramping TBHT to 300 A @ 2 A per min.

Thursday, December 15, 2022, 13:19 : Auto-ramping TBHT to 330 A @ 2 A per min.

Thursday, December 15, 2022, 14:25 : Increased anode voltage to 400 V.

Thursday, December 15, 2022, 14:50: Reducing TGHT & TBHT to 0 A @ 2 A per min.

Thursday, December 15, 2022, 14:59 : Ramped down anode voltage to 0 V & coil current to 0 A.

Friday, December 16, 2022, 06:59: IV4 & power off. 

Friday, December 16, 2022, 07:01: IG1 off. Turbo pumps off.

Friday, December 16, 2022, 08:15: Venting.

Thermocouples installed (X):

O - O

O - Anode

O - X

O - X

O - O

Same set up as test 2 other than a proper gas line connection was made.

Friday, December 16, 2022, 10:29: Roughing.

Friday, December 16, 2022, 14:46: TP1B on. 

Friday, December 16, 2022, 14:52: TP1A on.

Friday, December 16, 2022, 14:59: IG1 on. Vacuum @ 2.58e-05T & dropping.

Monday, April 17, 2023, 14:03: Roughing.

Monday, April 17, 2023, 14:08: BV1A open.

Monday, April 17, 2023, 14:32: TP1B on.

Monday, April 17, 2023, 14:38: TP1A on.

Monday, April 17, 2023, 14:47: TP1A Timed out. Restarted it within 30 seconds & it's up to speed. IG1 on.

Tuesday, April 18, 2023, 11:49: Vacuum @ 3.68e-07T. Waterline FS#5 opened. Vacuum stable.

Tuesday, April 18, 2023, 11:52: Power / Sources on.

Tuesday, April 25, 2023, 12:20: Power / Sources off

Tuesday, April 25, 2023, 12:26: IG1 Off. TP1B & TP1A off.

Ceramic elbow installed on the anode.

Friday, May 05, 2023, 06:47: Roughing.

Friday, May 05, 2023, 07:24: TP1B on.

Friday, May 05, 2023, 07:34: TP1A on.

Friday, May 05, 2023, 07:43: IG1 on.

Friday, May 05, 2023, 12:12: Vacuum @ 6.91e-06T. FS#5 opened. Vacuum stable.

Friday, May 05, 2023, 12:16: Power/sources on. Gases set

Friday, May 05, 2023, 12:19: Optics on / set.

Friday, May 05, 2023, 12:21: Quick System ready check - OK. Manually set. 

TGHT / TBHT @ 5 / 5 A

BIAS / EE / EZL @ 1 / -0.5 / 1 kV

Anode @ 100 V - 7.326mA

Coil @ 10 A.

Friday, May 05, 2023, 12:23: Ready for operation. All sources back to 0 A / 0 V. Optics remain. Vacuum continues down @ 6.70e-06T.

Monday, May 08, 2023, 08:21: IV4 open.

Monday, May 08, 2023, 08:25: Tap up Anode in steps @ 20 v per 20 seconds.

Anode @ 100 V = 4.884 mA

Anode @ 200 V = 6.105 mA

Anode @ 300 V = 7.326 mA

Anode @ 400 V = 7.326 mA  

Monday, May 08, 2023, 08:42: Anode tapped down to 20 V. 

Monday, May 08, 2023, 08:52: Coil tapped up to 70 A @ 7 A per minute. 

Monday, May 08, 2023, 09:12: Coil tapped back down to 0 A @ 7 A per minute.  

Monday, May 08, 2023, 09:15: Auto-ramping TGHT / TBHT to 580 / 290 A @ 2 / 1 A per min.  

Monday, May 08, 2023, 09:20: BIAS / EE / EZL set to 10 / -1.0 / 5 kV. 

Monday, May 08, 2023, 14:37: TGHT / TBHT @ 580 / 290 A. BIAS / EE / EZL set to 30 / -1.5 / 13 kV. 

Monday, May 08, 2023, 14:38: Anode tapped up to 100 V @ 20 V per 20 seconds. Begin mass & wire scans.  

Monday, May 08, 2023, 15:01: Mass & wire scans complete. 

Monday, May 08, 2023, 18:59: Tap up Anode in steps @ 20 v per 20 seconds from 100 V.

Anode @ 100 V = 9.768 mA

Anode @ 200 V = 12.210 mA

Anode @ 300 V = 14.652 mA

Monday, May 08, 2023, 19:05: Anode @ 400 V = 17.094 mA

Monday, May 08, 2023, 19:18: Anode tapped down to 20 V. 

Monday, May 08, 2023, 19:24: BIAS / EE / EZL @ 1 / -0.5 / 1 kV 

Monday, May 08, 2023, 19:35: Coil tapped up to 70 A @ 7 A per minute. 

Monday, May 08, 2023, 19:49: Coil tapped back down to 0 A @ 7 A per minute. Vacuum rose to 6.20e-06T @ 70A. Stabilized back down around 2.24e-06T.

Monday, May 08, 2023, 19:53: Auto-cooling @ 1 A per minute. 

Tuesday, May 09, 2023, 06:59: Anode, & HV sources to 0 V. IV4 closed.

Tuesday, May 09, 2023, 07:35: SV5 closed. Power / sources off.

Tuesday, May 09, 2023, 07:38: IG1 off. TP1B & TP1A off.

Tuesday, May 09, 2023, 08:49: Venting.

Tuesday, October 10, 2023, 15:18: Roughing.

Tuesday, October 10, 2023, 15:46: TP1B on.

Tuesday, October 10, 2023, 15:52: TP1B at speed. CG1A @ 0.113T & dropping.

Tuesday, October 10, 2023, 15:53: TP1A on.

Tuesday, October 10, 2023, 16:01: TP1A tripped. Reset.

Tuesday, October 10, 2023, 16:03: TP1A on. IG1 on.

Wednesday, October 11, 2023, 09:14: FS#5 open. Vacuum @ 5.19e-07T.

Wednesday, October 11, 2023, 09:20: PS / Sources on.

Wednesday, October 11, 2023, 09:22: Auto-ramping TGHT / TBHT to 230 / 230 A @ 2 A per min.

Wednesday, October 11, 2023, 14:10: HV off.

Wednesday, October 11, 2023, 14:26: Grounded HV rack. HV on.

Wednesday, October 11, 2023, 14:27: BIAS / EE / EZL @ 1 / -0.5 / 1 kV.

Wednesday, October 11, 2023, 22:59: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. 

Wednesday, October 11, 2023, 23:24: 1st round of mass & wire scans complete.

Thursday, October 12, 2023, 09:37: HV off.

Wednesday, October 18, 2023, 08:12: IV4 closed. Sources off.

Wednesday, October 18, 2023, 08:14 : Power off. IG1 off. TP off.

Thursday, August 15, 2024, 08:15: Formerly Ta#67 until the thin foil target, - AS

Thursday, July 25, 2024, 14:25  - competing electrical checks prior to test stand installation

 Thursday, July 25, 2024, 17:07 - after target installation test stand roughed down, turbo pumps then turned on. vacuuming overnight

 Friday, July 26, 2024, 09:01  -  water cooling turned on, while monitoring vacuum level (~1.5e-6T).  No affect on vacuum.

Friday, July 26, 2024, 09:32  -  began increasing TGHT TBHT.   increased to 230A/230A at 1A/30s

Friday, July 26, 2024, 10:22 - closed cage and increased BIAS to 30kV to ensure a lack of sparks - additional risk of sparking due to the multipin wires connected to TGHT and TBHT at the target terminals.

Friday, July 26, 2024, 11:04   -  decreased BIAS to 0V.  Then opening cage to allow access to reading voltage across TG and TB at target

Friday, July 26, 2024, 11:29  -  reached 230/230 A.  TG TB measurements taken at this point.

Friday, July 26, 2024, 12:05  -  increasing TGHT at 1A/30s to 250A

Friday, July 26, 2024, 12:13  -  TGHT at 250A for measurement

Friday, July 26, 2024, 12:29  -  increasing TGHT to 300A at 1A/30s

Friday, July 26, 2024, 12:55 - TGHT at 300A for measurement

Friday, July 26, 2024, 13:08 - TGHT increasing at 1A/30s to 350A

Friday, July 26, 2024, 13:36  TGHT at 350 A for measurement 

Friday, July 26, 2024, 13:43 TGHT increasing at 1A/30s to 400A 

Friday, July 26, 2024, 14:10   TGHT at 400A for measurement

Friday, July 26, 2024, 14:17 TGHT increasing at 1A/30s

Friday, July 26, 2024, 14:43   TGHT at 450A for measurement

Friday, July 26, 2024, 14:53  TGHT increasing at 1A/30s

Friday, July 26, 2024, 15:20   TGHT at 500A for measurement

Friday, July 26, 2024, 15:28  TGHT increasing at 1A/30s  

Friday, July 26, 2024, 19:14 FBP: we couldn't get a great mass scan with the provided tune from Dave, we might be doing something wrong. Mass scan saved and plotted here. 

Friday, July 26, 2024, 19:16 FBP: Target will be cooled down today before the weekend. 

Monday, July 29, 2024, 09:50 TGHT/TBHT ramping up to 580/230 A 1A/30s 

Monday, July 29, 2024, 15:30:  ramping up, relatively frequent sparking beginning at 24kV. Ramped down.  (also noticed that internal test wires were shaking due to high voltage bias)

Monday, July 29, 2024, 15:49 HV at 20kV waiting for stabilization

Monday, July 29, 2024, 15:58  after a five minute period of stability, beginning to increase bias in 100V increments. 

Monday, July 29, 2024, 17:35   sparking is too frequent (decided at 24kV) to warrant attempting to condition HV up to 30kV. must determine the cause of this sparking. thus cooling target overnight.  will remove internal wires and reheat.

Tuesday, July 30, 2024, 08:32 after cooling, test stand was vented, wires removed, and subsequently pumped down. 

now beginning TGHT TBHT ramp to 580 230 at 1A/30s

Tuesday, July 30, 2024, 10:02  during TGHT TBHT ramp, HV was slowly increased to 35kV to assess high voltage stability. Throughout, and at 35kV, there were no sparks seen at all.

 Tuesday, July 30, 2024, 13:50   target at 580 230. increasing bias. 

Tuesday, July 30, 2024, 14:45   at ~24kV, the bias is sparking approximately every 4 minutes. 

Tuesday, July 30, 2024, 17:28  When sparks slowed, bias was increased, but ultimately the sparking behaviour persisted. The bias was then dropped down to 0 and TGHT TBHT cooled at -1A/30s to 0A for target removal tomorrow.

 22:55 Cooldown completed to remove the voltage wires from inside the vacuum box. 

Friday, August 09, 2024, 21:07 Insulators, retainer and Re foil have been replaced, source cup machined so the ion source does not short against it. Venting TS now.

Friday, August 09, 2024, 22:17 Roughing.

Friday, August 09, 2024, 22:35: TP1B on. - AS

Friday, August 09, 2024, 22:42: TP1A on. - AS.

Friday, August 09, 2024, 22:50: Both TP at speed. 2.65e-05T Vacuum. FS#5 open.

Friday, August 09, 2024, 22:52: PS on. - AS.

AS:

Saturday, August 10, 2024, 07:02: TGHT / TBHT @ 26 / 5 A. BIAS / EE / EZL @ 1 / -0.5 / 1 kV. TGHT tapped back down to 5 A. 

Saturday, August 10, 2024, 07:05: Auto-ramping TGHT / TBHT to 350 / 150 A @ 2 A per min.

Saturday, August 10, 2024, 07:27: Halt ramping @ 45 / 45 A. Set auto-ramping TGHT / TBHT to 500 / 230 @ 2 A per min. Optics are set.

Saturday, August 10, 2024, 09:59: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. TGHT / TBHT @ 321 / 230 & still ramping. One spark on tap up.

Saturday, August 10, 2024, 10:02: Small peaks on RPM0A & RPM0B. No signal on FC0. One spark*.

Saturday, August 10, 2024, 10:07: Spark* 

Saturday, August 10, 2024, 10:11: BIAS / EE / EZL @ 1 / -0.5 / 1 kV. TGHT / TBHT @ 344 / 230 & still ramping.

Saturday, August 10, 2024, 11:35: BIAS / EE / EZL @ 30 / -1.5 / 13 kV 

Saturday, August 10, 2024, 11:38: 1 spark* 

Saturday, August 10, 2024, 11:40: TGHT / TBHT @ 500 / 230 A. FC0 & wire scans produced signals / peaks. 

Saturday, August 10, 2024, 11:45: Starting mass scan. 

Saturday, August 10, 2024, 12:17: Mass scan taken. Wire scans on Mass 27 taken. Signals noted on mass 40 & 138 approx. Also of note. One large spark. Steerers reset. Signal on TGHT current.

https://isacwserv.triumf.ca/onlylocal/isactdata/save_restore/masscorr/2024_07_26_Ta_67_thinfoil_1st_massscan.txt

Saturday, August 10, 2024, 12:21: Begin HV Check.

Saturday, August 10, 2024, 12:24: BIAS / EE / EZL @ 35 / -1.8 / 15 kV.

Saturday, August 10, 2024, 12:28: BIAS / EE / EZL @ 40 / -2.0 / 17 kV.

Saturday, August 10, 2024, 12:44: Began sparking after 40. Brought back down 

Saturday, August 10, 2024, 12:56: HV @ 0 kV. 

Saturday, August 10, 2024, 13:05: BIAS / EE / EZL @ 30 / -1.5 / 13 kV 

Saturday, August 10, 2024, 13:07: BIAS / EE / EZL @ 35 / -1.8 / 15 kV 

Saturday, August 10, 2024, 13:10: BIAS / EE / EZL @ 40 / -2.0 / 17 kV.

Saturday, August 10, 2024, 13:24: Spark* reset optics. 

Saturday, August 10, 2024, 13:44: BIAS / EE / EZL @ 30 / -1.5 / 13 kV  

Saturday, August 10, 2024, 14:03: HV to 0 kV. 

Saturday, August 10, 2024, 14:12: Begin Auto-cooling @ 2 A per min. 

Monday, August 12, 2024, 05:43: Sources Off. IV4 Closed.

Monday, August 12, 2024, 05:45: IG1 & Chamber TP off. 

Monday, August 12, 2024, 07:46: TS Computer rebooted. IV4 reset. PS off. Venting.

SK Series of LP-SIS targets are for conditioning only.

Thursday, February 02, 2023, 12:41: Roughing.

Thursday, February 02, 2023, 12:43: BV1A open.

Thursday, February 02, 2023, 13:30: TP1B on.

Thursday, February 02, 2023, 13:34: TP1B at speed. TP1A on.

Thursday, February 02, 2023, 13:43: TP1A at speed. IG1 on.

Thursday, February 02, 2023, 14:53: Waterlines opened. Vacuum Ok @ 5.38e-06T.

Thursday, February 02, 2023, 14:55: PS / Sources on. Manually tap up TGHT / TBHT to 5 A. OK.

Friday, February 03, 2023, 06:32: Vacuum @ 6.56e-07T. Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min. 

Monday, February 06, 2023, 07:39: Vacuum @ 8.36e-07T. Auto-cooling @ 2 A per min.

Tuesday, March 28, 2023, 13:45: Power / sources off.

Tuesday, March 28, 2023, 13:47: IG1 off. TP1A & TP1B off.

Wednesday, March 29, 2023, 07:53: Venting. 

42972-5 Base / 42972-9 Lid

Tuesday, November 05, 2024, 16:30: Roughing. 

Tuesday, November 05, 2024, 17:04: TP1B on.

Tuesday, November 05, 2024, 17:13: TP1A on.

Tuesday, November 05, 2024, 17:21: IG1 on @ 2.41e-05T 

Wednesday, November 06, 2024, 10:35: Vacuum @ 5.75e-07T. Waterline FS#5 open. 

Wednesday, November 06, 2024, 16:24: TGHT/TBHT ramping to 580/230A at 2A/min

Thursday, November 07, 2024, 09:16:  Increasing BIAS/EE/EZL to 30/2.5/13 kV slowly

Thursday, November 07, 2024, 11:26:  as expected, no beam out to FC0. slowly increasing to bias to 45kV alongside ezl to 28kV

Thursday, November 07, 2024, 11:27:   TGHT dropped out for 1s. Did not register a trip or anything. simply jumped down to 0A and immediately recovered.

Thursday, November 07, 2024, 14:40:   At 45kV, there were no sparks noticed. The target assembly was brought down to 0V and ramped down to 0A/0A at -2A/min  

Wednesday, November 13, 2024, 09:15: PS Off. TP off - AS. 

Wednesday, November 13, 2024, 11:26: VV1 opened - BB. 

Tuesday, October 18, 2022, 13:25: Roughing.

Tuesday, October 18, 2022, 13:28: BV1A open

Wednesday, October 19, 2022, 12:14: TP1B on.

Wednesday, October 19, 2022, 12:18: TP1A on.

Wednesday, October 19, 2022, 12:26: IG1 on.

Wednesday, October 19, 2022, 12:34: IV4 open & Closed. Vacuum @ 4.13e-06T.

Wednesday, October 19, 2022, 12:39: FS#5 Water line opened.

Wednesday, October 19, 2022, 12:40: PS on.

Wednesday, October 19, 2022, 12:43: Optics PS on. Unlocked.

Wednesday, October 19, 2022, 12:44: Sources on. Vacuum @ 3.21e-06T.

Wednesday, October 19, 2022, 12:46: BIAS / EE / EZL @ 1 / -0.5 / 1 kV.

Wednesday, October 19, 2022, 12:47: TGHT / TBHT @ 10 / 10 A manually.

Wednesday, October 19, 2022, 12:48: IV4 Open.

Wednesday, October 19, 2022, 12:53: Optics set.

Controls updated

Monday, November 07, 2022, 12:40: Optics set

Monday, November 07, 2022, 13:00: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Monday, November 07, 2022, 13:15: Auto-ramping TGHT /  TBHT to 20 A @ 4A per minute. (Testing new auto-ramp)

Monday, November 07, 2022, 13:35: BIAS / EE / EZL @ 35 / -1.8 / 15 kV. Spark*

Monday, November 07, 2022, 13:37: BIAS / EE / EZL @ 40 / -2.0 / 17 kV

Monday, November 07, 2022, 13:41: BIAS / EE / EZL @ 45 / -2.3 / 20 kV with multiple sparks near the 44-45kV end of the tap up.

Monday, November 07, 2022, 14:09: Spark. Audible outside the cage, however vacuum was also affected.

Monday, November 07, 2022, 14:49: No further sparks. HV check ok.

Monday, November 07, 2022, 14:52: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

LP-SIS modified w/ 2 holes on the center block to accept a pair of Ta tubes that are run to the coil PS.

*Note modified HS plates at the ion source to accommodate the LP-SIS (Has a slightly bent ionizer tube from the drilling)

-Plan to shut down the ISAC TS on 12/23/2021 for the holidays.

Thermocouples are installed.

Ref:

https://elog.triumf.ca/TIS/Test-Stand/679

Pin configuration between top 9-pin connector on Source Tray and terminal in high voltage rack. Measured 2018-08-21 by Aaron and Anders

Tuesday, December 21, 2021, 13:55: Roughing.

Tuesday, December 21, 2021, 13:57: BV1A open.

Thursday, December 23, 2021, 07:42: TP2 & TP6 off.

Thursday, December 23, 2021, 09:00: PV1 & PV2 off. RP1 & RP2 off.

Clean up?? What happened here? (Water mess?)

Tuesday, January 04, 2022, 11:13: RP1 & RP2 on.

Tuesday, January 04, 2022, 11:14: Roughing.

Tuesday, January 04, 2022, 11:17: TP2 & TP6 on.

Tuesday, January 04, 2022, 11:21: IG6 on.

Tuesday, January 04, 2022, 13:00: TP1B on.

Carla:

Swapped top and bottom connector on target side multipin to match up with wires. Added kapton tape where things were touching. TC#3 (ROI) maybe won't work, was very twisted. Not sure if I got all the twists.

Monday, January 10, 2022, 09:53: Roughing.

Monday, January 10, 2022, 15:55: TP1B on

Monday, January 10, 2022, 16:04: TP1A on.

Monday, January 10, 2022, 16:14: TP2 Tripped. Back on within 30 seconds.

Monday, January 10, 2022, 16:14: IG1 on.

Wednesday, January 12, 2022, 09:56 : Cage has been closed up and HS water lines are open.

 Thursday, July 22, 2021, 17:43: Roughing

New argon gas bottle installed.

Thursday, July 22, 2021, 18:16: Turbos on.

Thursday, July 22, 2021, 18:25: TP1A  timed out. TSG:CG1A is larger than TSG:CG1, that is the roughing lines are higher than the vacuum chamber. 

Thursday, July 22, 2021, 18:27: Bypassing TSG:BV1 to open it.

Thursday, July 22, 2021, 18:28: Turbo at speed.

Thursday, July 22, 2021, 18:28: Bypass removed.

Thursday, July 22, 2021, 18:28: IG1 on. 

Friday, July 23, 2021, 09:16: IG1 @ 1.69e-6 T.

Friday, July 23, 2021, 09:17: Waterlines open. No vacuum response

Friday, July 23, 2021, 10:09: While checking the gas connections I found out that inside the faraday cage there are a couple of connections missing:

Coil PS chasis ground disconnected

Resistor between  A and C (tbht pos and tght neg) disconnected.

Friday, July 23, 2021, 15:29: Gas system taken out to properly install a new "tee" union.

Friday, July 23, 2021, 15:29: IG1 @ 1.34e-6 T.

Friday, July 23, 2021, 15:52: Power/ sources on.

Friday, July 23, 2021, 15:54: Auto-ramping TGHT/TBHT to 580 A/ 280 A @ 2A/min

Friday, July 23, 2021, 15:58: IV4 open.

Saturday, July 24, 2021, 13:07: IG1 @ 1.25 e-6 T. 

Saturday, July 24, 2021, 18:34: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. One spark when Bias reached 30 kV.

Saturday, July 24, 2021, 18:36: Two consecutive sparks. Lowering to bias  29.5  kV to let it conditioned there for at least 10 minutes.

Saturday, July 24, 2021, 18:46: Bias to 30 kV. No sparks. 

Saturday, July 24, 2021, 18:59. No sparks. IG1 @ 1.16e-6 

Saturday, July 24, 2021, 19:26: Anode gets current limited  as of 2 V. Maybe there is a short somewhere else either inside the vacuum box, or on the service cap. Will check tomorrow

Saturday, July 24, 2021, 19:30: BIAS / EE / EZL @ 0 kV.

Saturday, July 24, 2021, 19:30: Auto-cooling to 0 A @ -2A/min

Monday, July 26, 2021, 09:00: IG1 @ 4.58e-7 T.

Monday, July 26, 2021, 09:17: No visible sparks 

Monday, July 26, 2021, 09:22: Power sources off. 

Monday, July 26, 2021, 13:20: After some tests I can conclude a couple of things:

• Anode/Cathode voltage power supply works fine and draws the right current for a 100 kOhm resistor. 
• When all cables are disconnected from TBHT and TGHT F/Ts there is continuity between them and HV common.

Monday, July 26, 2021, 14:52: IV4 closed

Monday, July 26, 2021, 14:53: Turbos off.

Oops!, forgot to turned off IG1 but interlock did it for me :p

 Monday, July 26, 2021, 17:19: After opening the vaccum chamber I found the portion of the capillary that goes to the target was touching the heatshield. Confirmed continuity with a multimeter.

Manually move it away and no continuity confirmed with multimeter.

FTs A-D recconected.

Bypassing anode interlock to check there is no short. Confirmed.

Preparing to close and pump.

 Monday, July 26, 2021, 17:23: Roughing

Monday, July 26, 2021, 17:55: Turbos on.

Monday, July 26, 2021, 18:03 : TP1A timed out ...again

Monday, July 26, 2021, 18:03: Bypassing BV1A. TP1A reset and on. turbos at speed.

 Monday, July 26, 2021, 18:05: IG1 on.

Monday, July 26, 2021, 18:26: IG1 @ 1.97e-5 T. 

Monday, July 26, 2021, 22:33: IG1 @ 2.41e-6 T

Monday, July 26, 2021, 22:33: IV4 open. 

Monday, July 26, 2021, 22:55: BIAS/EZL/EE to 10/6/1 kV. No problem. All set to 0.000 kV again 

Monday, July 26, 2021, 22:57: Coil to 10 A. Anode to 100 V.. No problem. All set to 0 again.

 Monday, July 26, 2021, 22:59: Auto-ramping TGHT/TBHT to 580/280 A @ 2A/min.

Tuesday, July 27, 2021, 06:32: IG1 @ 1.52e-6 T.

At 01:30, approximately 10 minutes after TBHT heater reached the desired current, the anode went from 0 to 1.5 V.

Tried to put anode voltage to 100 V but it got current limited as of 2 V.

Given that before heating the anode voltage was fine, I think the gas tube move again and made contact with the heatshield.

I will need to open this again :(

 Tuesday, July 27, 2021, 06:41: Auto-cooling TGHT/TBHT to 0 A @ -4A/min

Tuesday, July 27, 2021, 09:08: Heaters @ 0 A. Anode still gets current limited.

Tuesday, July 27, 2021, 09:09: IV4 close. Timed out. 

 Tuesday, July 27, 2021, 09:09: IG1 off.

Tuesday, July 27, 2021, 09:09: Turbos off. 

Tuesday, July 27, 2021, 11:13: Venting.

Tuesday, July 27, 2021, 11:58: Gas tube move and end up touching the  heatshield again. When try to adjust it to add an insulator as an spacer, the gas line de-coupled from the target.

removing the target for re-installation and clearance addition.

 Replace Ta capillary going into the target with the one from previous febiad as it felt sturdy and had better shape for clearance with the HS.

Assembly has new gas tube to the target for better fit and clearance to the HS.

Electric checks before closing shows no short between TIS and HS.

Tuesday, July 27, 2021, 12:57: Venting

Tuesday, July 27, 2021, 13:28: Turbos on. 

TP1A timed out again! Bypassing BV1A to open it, then reset TP1A and turn  it on.  Turbo show that is at speed right away.

Tuesday, July 27, 2021, 13:38: IG1 on

Tuesday, July 27, 2021, 15:24: IG1 @ 7.07e-6.

Tuesday, July 27, 2021, 15:28: Waterlines open. No vacuum response.

Tuesday, July 27, 2021, 15:33. IV4. Timed out a couple of times.

Tuesday, July 27, 2021, 15:37: Power/Sources on.

 Tuesday, July 27, 2021, 17:57: IG1 @ 2.76e-6 T.

Tuesday, July 27, 2021, 18:04: Auto-ramping TGHT/TBHT to 560/280 A. @ 2A/min. 

Wednesday, July 28, 2021, 00:46: Found out that anode got current limited around 9 pm. I wonder if the tube got moved again

Wednesday, July 28, 2021, 00:48: Auto-cooling to 0 A to investigate. 

 Wednesday, July 28, 2021, 06:44: IV4 closed

Wednesday, July 28, 2021, 06:44: IG1 off. Turbos off. 

Wednesday, July 28, 2021, 08:01: Venting.

 Once more, the tube was touching the heatshield in the same way as before.

• The cause is likely the spiral line coming from the VCR as in "rest" state in pointing towards the grip handles.
• I was trying to put an insulator piece and I noticed (and recall) how much force I had to put in order to accommodate the spiral  line in order to align it with the target capillary.
• This lead me to think that when the targets gets hot and the capillary deforms, this will be pushed towards the HS.
• To fixed it, I modified the spiral to have less torque or at least make it push to the other side (touching the tbht is no problem).

Closing everything and pumping down.

Modified spiral tube from VCR to counteract torque towards the HS. Now points towards TBHT.

Electric checks before closing shows no short between TIS and HS.

Wednesday, July 28, 2021, 08:48: Venting

Wednesday, July 28, 2021, 09:18 Turbos on. 

Wednesday, July 28, 2021, 09:26: IG1 on. TP1 didn't timed out.

Wednesday, July 28, 2021, 10:24: IG1 @ 4.13e-6 T. All voltages can be set with no problem.

Wednesday, July 28, 2021, 11:48: IG1 @ 1.98e-6 T. Anode @ 10 V.

Wednesday, July 28, 2021, 11:49: Auto-ramping TGHT/TBHT to 560/280 A @ 4A/min. 

Wednesday, July 28, 2021, 14:10: Heaters reached setpoints. No shorts!

Wednesday, July 28, 2021, 14:14: IG1 @  1.71e-6 T.

Wednesday, July 28, 2021, 14:30: Spark when ramping voltage @ 20 kV.

Wednesday, July 28, 2021, 14:30: IV4 open. 

Wednesday, July 28, 2021, 14:32: Bias/ EZL/EE @ 30/13/1.5 kV. Anode @ 0 V.

Wednesday, July 28, 2021, 14:33: FC0 = 1.09e-10 A 

 Wednesday, July 28, 2021, 14:34: IG1 @ 1.62e-6 T.

Wednesday, July 28, 2021, 14:35:  Auto-ramping TGHT to 580 A @ 4A/min. 

Wednesday, July 28, 2021, 14:48: IG1 @1 .60e-6 T 

Wednesday, July 28, 2021, 14:48: FC0 = 2.35e-10 

Ready to start systematic measurements.

 Wednesday, July 28, 2021, 15:00: Mass scan with anode = 0 V started.

Couple more mass scans, and parameter scans with a python notebook.

Wednesday, July 28, 2021, 20:37:   Auto-ramping TBHT to 285 A @ 2A/min. 

Thursday, July 29, 2021, 11:46: Manually tapping to 279 A as this provides a similar power to an older measurement. Even though the anode-cathode gap distance might be different, this is a preliminary measurement to make sure things look relatively similar. 

 Thursday, July 29, 2021, 21:38: Most of the day I was running parameter scans with similar parameter to an older measurement.

For this I varied TBHT and TGHT and some look closer than other, which indicates how much the sources varies from each other.

I tried running an emittance measurement but it seems the voltage is not been swept. I need to check if the power supply is working.

 Thursday, July 29, 2021, 21:38: TBHT to 270 A  @ -2A/min. TGHT @ 580 A

Friday, July 30, 2021, 09:57: Things stay fine overnight and only TPS:CBC was found off . The plan for today is the following:

• Check grid integrity
• Flush and refill gas line
• Start systematic measurements at low temperature.
  • Mass scan nominal values of coil and anode
  • Anode-coil scans
  • Mass scan interesting points
  • Emittance scan interesting points

 Friday, July 30, 2021, 11:43: Grid is fine. Voltages to 0 to  open cage.

Friday, July 30, 2021, 11:44:  Gas lines flushed and refilled with a pressure of |200| kPa. Similar to older measurements. It seems that yesterday measurements were with |240| kPa.

Friday, July 30, 2021, 11:51: Noticed that TP6 was red. Likely a consequence of a spark. Not sure since when. The vacuum seem ok before. 

Friday, July 30, 2021, 11:55: TP1A interlock due to vacuum on CG1A. When opening it the system pressure peak and trip the heaters :/. Waiting for the backing lines to evacuate before heating again.

 Friday, July 30, 2021, 14:39: TSG:CG1A&B are not coming down. Bypassing TSG:BV1A increase the pressure reading on IG1, indicating that the signal is real. The question is why there is such buildup in the backing lines.

Digging the archive this seems common but only after march 2021, the pressure does not decrease as good as before. This matches a big water leak. Maybe a new pump is needed as it was the case in August 2020.

Friday, July 30, 2021, 14:49: IG1 off. TP1B off. 

Friday, July 30, 2021, 16:05: Backing lines @ 0.025 T. An order of magnitude decrease after swapping RP1 (see elog 889).

Turbos on, IG1 On. Things look to be ok again. TP1A epics readback is 9.92 A at all times but controller reads 6 A upon start (normal) and at full speed reads 0.7 A (normal). To check with control group.

Friday, July 30, 2021, 16:14: IG1 @ 7.02e-7 T.

Restarting everything after swapping RP1 (see elog 889).

Friday, July 30, 2021, 16:14: IG1 @ 7.02e-7 T.

Friday, July 30, 2021, 16:26: IV4 open. IG1 @ 6.3e-7 T.

Friday, July 30, 2021, 16:27: Auto-ramping TGHT/TBHT to 540/270 A @ 4A/min.

Friday, July 30, 2021, 16:32: Emittance meter power supply found at 500 V. Running a scan does not weep the voltage.

Cycling the PS and running a  scan. Now the voltage is swept.

Friday, July 30, 2021, 17:43: TBHT reached set current. TGHT @ 304 A and ramping up. IG1 @  6.36e-7 T. TIS glowing so I guess it didn't break from early trip.

Friday, July 30, 2021, 18:53: IG1 @ 7 e- 7 T.

Friday, July 30, 2021, 18:53 : Auto-ramping TGHT to 580A @ 4A/min.

Friday, July 30, 2021, 19:10. TGHT reached set current. IG1 @ 7.35e-7 T.

Friday, July 30, 2021, 19:22: BIAS/EZL/EE @ 30/13/1.5 kV. 

Friday, July 30, 2021, 19:25: IG1 @ 7.55e-7 T.

Friday, July 30, 2021, 19:26 :  Auto-ramping TBHT to 280A @ 4A/min.

 Friday, July 30, 2021, 19:29: TBHT reaches set current. IG1 @ 7.72e-7 T.

Friday, July 30, 2021, 21:24: Mass scans with gas on/off shows clear only contribution from gas line. 

Friday, July 30, 2021, 21:25: Anode=200C,Coil=30A. FC0=5.14e-9 A. FC6=9.35e-10 A for 40Ar+

Parameter scans performed on nominal heater current and also with heater at similar power to older measurements.

Leaving some devices that are typically at 0 V to something like 1 to 2 volts, to avoid the red 0 readback as a test.

Saturday, July 31, 2021, 08:13: System stable overnight. TMS:VCB5 was the only device found off.

Mass scans, anode-coil scans. gas line effects.

Sunday, August 01, 2021, 08:42: On-site: Grid is fine. Gas pressure stays at |200kPa| even after several line flushes. Continuing  remotely.

Several parameter scans all at 280A. All of the look remarkably similar, so reproducibility over two day is possible.  Mass scans at three different coil-anode combinations

Emittance scans still not possible @ 1.3e-9 A on FC6, when going to 290 A will try again.

Sunday, August 01, 2021, 22:52: IG1 @ 8.43e-7 T.

Sunday, August 01, 2021, 22:53:  Auto-ramping TBHT to 290A @ 4A/min.

Monday, August 02, 2021, 01:00: IG1 @ 860e-7T. FC1=1.59e-8.

Monday, August 02, 2021, 08:59: IG1 @ 7.44e-7 T.

Mass scans performed. Emittance scans are still not possible with FC6=2.2e-9 A. Parameter scans

 Monday, August 02, 2021, 09:02:  Auto-ramping TBHT to 300 A @ 4A/min.

Emittance scans are still not possible with FC6=3.1e-9 A

 Monday, August 02, 2021, 12:48: IG1 @ 7.6e-7 T.

Monday, August 02, 2021, 12:48:  Auto-ramping TBHT to 305 A @ 2A/min.

Monday, August 02, 2021, 16:40: IG1@ 8.01 e-7 T. 

 Parameter scans. Mass scans performed. Emittance scans are still not possible with FC6=6.21e-9 A. I think there is something wrong with the parameters or with the hardware. To check with Carla on Tuesday.

 I will take one more measurement at higher current and go tomorrow to check the emittance scan status.

Monday, August 02, 2021, 20:46:  Auto-ramping TBHT to 310 A @ 1A/min. IG1 @ 8.16e-7 T.

 Parameter scans. Mass scans. 

Monday, August 02, 2021, 23:47: IG1 @ 8.07e-7 T. FC0 = 3..8e-8 A.

Monday, August 02, 2021, 23:52:  Done for the day.

Tuesday, August 03, 2021, 07:34: Things were stable overnight. IG1 @ 7.92e-7 T. 

Parameter scans, and emittance meter troubleshooting.

Grid is fine.

Tuesday, August 03, 2021, 11:55: Emittance scans seem to work now( see e-log 891) 

Tuesday, August 03, 2021, 12:08: Done on-site. Continuing remotely. 

Emittance scan. Mass scans.

Tuesday, August 03, 2021, 20:21: Ramping TBHT to 315 A @ 1A/min. IG1 @ 8.2e-7 T.

Parameter scan. Mass scans. Emittances scans.

Tuesday, August 03, 2021, 22:55: IG1 @8.07e-6. Done for the day. Will continue tomorrow.

Wednesday, August 04, 2021:  Parameter scan. Mass scans. Emittances scans.

Data analysis on files generated so far. Efficiency as a function of temperature-voltage look similar.

Given that previous cathode heating current did not have emittance, I will go down to measure efficiency.

Thursday, August 05, 2021: Morning troubleshooting CANBUS signal with no luck (this is actually something good)

Mass scans. Parameter scans, and finally emittance scans at lower temperatures.

Thursday, August 05, 2021, 20:58: IG1 @ 7.35e-7 T. 

Friday, August 06, 2021: CANBUS analyzer up-and-running.

Parameter scan. Mass scans. Emittances scans.

Saturday, August 07, 2021, 06:00:  Found all my epics windows closed. Probably a network issue as I cannot connect from any of my pc's. Submitting a ticket.

 Saturday, August 07, 2021, 08:43: Reply from Steve McDonald says there are general network issues and someone is goin on-site to investigate the "network switch stack in the ISAC2 second floor"

Saturday, August 07, 2021, 10:12 : Communications restore after fix.

Saturday, August 07, 2021, 15:06: FC0 reading oscillates a lot and sometimes drop to 0. Mass scan shows almost no peaks without gas. With gas, the FC0  behaves the sames even thought 40Ar+ signal is 1e-8A and responds to the gas open/close.

Moreover, the RPM0s have an offset current. RPM0A is not showing beam.

I will turn the HV off in case there is weird dark current going on. 

Saturday, August 07, 2021, 17:29 : On-site

ISAC test stand PC lost connection to epics due to the same issue. Initiating striptools.

Nothing visible wrong on service cap nor around the ISAC test stand, however, FC0 still oscillates a lot.

I will change the signal cables to see if one controller can read from the other faraday cup.

 Things look better now (see entry 893)

Finished mass scans

Sunday, August 08, 2021, 00:35: Ramping TBHT to 300 A @ 4 A/min. IG1 @ 6.71e-7 T. 

Sunday, August 08, 2021:  Parameter scans, mass scans, emittance scans performed.

Sunday, August 08, 2021, 23:55: Checking other species given that  with TBHT=310 A I can see m=90, which I think it might be Ta++

Monday, August 09, 2021: TBHT increased to 315 A

Parameter scans, mass scans, and emittance scans performed.

Investigating the following species: O+, (H2O)+, Ar++, (N2)+/CO+, (O2)+,Ta++,(TaO)++ on masses 16,18,20,28,32,90,98, respectively.

Both the atomic, and molecular oxygen follow different tendencies wrt other species.

Tuesday, August 10, 2021, 09:57: TBHT @ 320 A. IG1 @ 6.53e-7T. 

Tuesday, August 10, 2021, 10:01: Increasing anode limit current to 200mA. All previous tests had 150 mA and the maximum current recorded was ~110mA. 

Tuesday, August 10, 2021, 11:42: Grid is fine (confirmed by Marla) 

Tuesday, August 10, 2021: Mass 60 observed, it might be (SiO2)+ coming from the coil jacket. The parameter scan shows that the ion current is only dependent on voltage. 

Wednesday, August 11, 2021. Mass scan, and parameter scan. For the first time I am measuring only FC0 with and without gas. I'm gonna investigate the higher peaks individually, likely they are H2O,O2,O,H2, and Ar

Thursday, August 12, 2021: All day measuring different ion currents with and without gas (H2,N,O,OH,H2O,N2/CO,O2).

Friday, August 13, 2021, 09:03: Currently measuring FCO with gas. 

 Friday, August 13, 2021, 10:42: On-site. Grid is fine

Friday, August 13, 2021, 19:50:Scans completed for different species, results seem consistent but required more in-depth. FC0 scans shows higher values towards high anode voltage and high coil current but not all species shows this behavior.

Friday, August 13, 2021, 19:51: Ramping tbht to 330 @ 1 A/min. 

Friday, August 13, 2021, 20:29L IG1@8.25e-7T. 

Saturday, August 14, 2021, 22:28: Parameter scans, mass scans. Some emittance scans unsuccessful.

Anode leakage current seems to creep a bit overnight. This could be an indication of a failure onset but I'll have to see. I won't increase the current remotely until being on-site

Sunday, August 15, 2021, 10:10: Anode leakage current has increased 10 mA overnight. 

Sunday, August 15, 2021, 20:43: Emittance scans for multiple anode/coil combinations. Visually there are differences on the geometrical emittance, not so much on the 90% intensity emittance. Requires proper  emittance  analysis.

Monday, August 16, 2021, 18:58: Data analysis and short summary. Systematic emittance measurements.

Request to add more PVs to control emittance and mass scans from jupyter notebook 

Tuesday, August 17, 2021, 10:22: On site. Grid is fine. Re-initianing epics as my pc reboot it.

Tuesday, August 17, 2021, 10:23: TBHT to 335A @ 1A/min. Anode leakage current =150 mA. IG1=6.51e-7T. Increase anode current limit to 250 mA.

Tuesday, August 17, 2021, 10:29: The grid is as bright as the cathode. This is the first time the grid shines this bright. 

Tuesday, August 17, 2021, 10:53: The grid looks normal at anode=200V. By making an anode sweep I was able to observe that at around 300 V there is an onset on how bright the anode get. Passing this voltage the grid start to shine and gets a maximum brightness when reaching 500V.

This seems to suggest that the power deposited on the grid is enough to cause substantial heating if it makes it as bright as the cathode. The maximum power into the anode body (at this cathode heating current (335A))  is 500V* 200mA=100W (just like a lightbulb)

Tuesday, August 17, 2021, 12:03: Done on-site. Will continue remotely. 

Tuesday, August 17, 2021, 20:19: Anode is drawing more current. During Ar+ scan, the maximum anode current registered was ~200 mA. Now is ~250 mA 

Schottky plot shows a tiny upwards kick.

Tuesday, August 17, 2021, 22:16: Once again, at the end of the scan the current increased. This time to 320 mA

Tuesday, August 17, 2021, 22:18: I think the grid will melt tonight  with anode/coil @ 200V/30A. 

Wednesday, August 18, 2021: Well, well, well. Grid didn't melt but the  anode leakage current has increased again. At some point the anode got current limited to 350 mA and from 490 V it drop to 470V.

Wednesday, August 18, 2021, 16:57: Increasing the anode limit current to 400 A.

Wednesday, August 18, 2021, 18:01: During the scan on FC0, the anode current went up to 400 mA so I increased to 500 mA, but I had to increase to 600 mA but it was still getting current limited. Scan aborted

Maybe now I am melting the grid 

I will run an FC0 scan with gas on while I'll go on-site to check the grid and the "anomalous" ionization..

Running a mass scan while I go on-site. Anode=200. Coil=90 A.

Wednesday, August 18, 2021, 19:42: Grid is melted. From the look of it half of the visible part collapsed into a blob while the other is gone (allowing to see the far backside of the target oven.

With this knowledge I can proceed with more aggressive tests in order to test the limit if the "anomalous" regime.

Wednesday, August 18, 2021, 23:24: After a mass scan with 0 V to check surfaces ionizes species I noticed there is a signal on mass ~ 137.5 which I am not sure what it is.

It might be Ba or a molecule but is coming from the transfer line as sweeping the voltage between 0 and 2 V changes the response but above this the signal is gone and reappears with 80 V.

Thursday, August 19, 2021, 08:08: mass ~137.5 disappeared. If I increased the anode voltage to 400 V or so some appears but quickly drops.

 Thursday, August 19, 2021, 11:35: Increased anode current limit to 800 mA.

Thursday, August 19, 2021, 14:08: Scan didn't cause an increased on leakage current. Maximum registered was around 200 mA. However, the contour plot looks different to the case when the grid was complete.

Thursday, August 19, 2021, 23:36: Finishing some scans at the current settings.

Thursday, August 19, 2021, 23:36: TBHT to 280A @ -1A/min. Tomorrow I will focused on temperature scans without caring much on emittance o mass composition. 

Friday, August 20, 2021, 11:28: Scans done for,280,285. Currently running 290 A.

The coil current dependence qualitatively follows the one from ISOLDE, in which a series of minimum and maxima occur and also vary a bit with voltage.

Friday, August 20, 2021, 13:34: Accidentally set TBHT to 226 A directly from 295 A. 

Friday, August 20, 2021, 13:36: Heating TBHT to 300 A @ 4A/min. 

Friday, August 20, 2021, 14:13: TBHT is at 295 A to check things are still the same. 

Friday, August 20, 2021, 23:46: TBHT @ 310 A. 

Saturday, August 21, 2021, 06:20: Scan on-going for TBHT 315 A. 

Saturday, August 21, 2021, 13:25: TBHT to 335 A. 

Saturday, August 21, 2021, 15:02: TBHT to 340 A. 

Saturday, August 21, 2021, 18:11: The voltage got current limited during the scan for 345 A. When setting the voltage to 0V, the anode seems to be shorted. 

Saturday, August 21, 2021, 22:46: Ramping down TGHT/TBHT to 0 (@-1A/min) but the short is still present. Currently  @ TGHT/TBHT 454/162 A. 

Sunday, August 22, 2021, 13:29: This morning the heaters reach 0 A but the anode remain current limited. I will proceed to turn off the TS to check tomorrow morning the ion source. 

Sunday, August 22, 2021, 13:31: IV4 closed.

 Sunday, August 22, 2021, 13:36: Sources off.

Sunday, August 22, 2021, 13:38: IG1 off

 Sunday, August 22, 2021, 13:38: Turbos off.

Monday, August 23, 2021, 07:19: Venting 

Monday, August 23, 2021, 08:30: Confirmed a short between target/cathode to anode/heatshield

Monday, August 23, 2021, 11:29: Confirmed that the anode power supply still works :)