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Entry  Tuesday, September 17, 2013, 14:36, Bevan Moss, South Hot-Cell, Standard Operation, TM3, , Containment Box has been removed 

 The containment box has been removed. Tomorrow the wiring harness will be installed.

Entry  Friday, May 01, 2015, 08:27, chad fisher, South Hot-Cell, Repair, TM2, , Containment Box Removal 

Containment box has been removed in preparation for wire replacement.

Entry  Wednesday, March 27, 2013, 11:49, David Wang, ITE, Standard Operation, TM4, Sic LIS-RFQ , Connected TM4 in ITE 

TM4 has been reconnected to ITE after the module moving. The roughing is started . The water will be supplied to ITE after  testing  the water  pumps . The water interlock check will be done on next week also.

Entry  Tuesday, June 24, 2014, 15:14, Anders Mjos, South Hot-Cell, Standard Operation, TM3, TiC#4, Conductor insulator broken close to right TGHT terminal TiC#4_Broken_Insulator.pdf

When the Containment Box was opened today by Chad for a target change, we found the conductor insulator block B (ITD0054) to be broken close to the right TGHT terminal. Chad was nevertheless able to remove the target. See DocuShare and attached file for photos.

An attempt to replace the insulator will be made tomorrow with a spare.

A small sticky piece, likely off plastic material, was found next to the left main source tray insulator. The piece was removed from the Containment Box. See link above and attachment for photos.

    Reply  Wednesday, June 25, 2014, 12:49, Anders Mjos, South Hot-Cell, Standard Operation, TM3, TiC#4, Conductor insulator broken close to right TGHT terminal ITD0052C_revB.pdf

Anders Mjos wrote:

When the Containment Box was opened today by Chad for a target change, we found the conductor insulator block B (ITD0054) to be broken close to the right TGHT terminal. Chad was nevertheless able to remove the target. See DocuShare and attached file for photos.

An attempt to replace the insulator will be made tomorrow with a spare.

A small sticky piece, likely off plastic material, was found next to the left main source tray insulator. The piece was removed from the Containment Box. See link above and attachment for photos.

 The two insulators ITD0053 and ITD0054 was replaced this morning by Chad. Photos on DocuShare. All bolts torqued with torque wrench see attached PDF for values.

Entry  Tuesday, October 01, 2019, 16:30, Anders Mjos, Conditioning Station, Standard Operation, TM2, Ta#58, Conditioning of Ta#58 

Tuesday, October 01, 2019, 15:15: Started roughing.

Tuesday, October 01, 2019, 16:30: Started TPs

Tuesday, October 01, 2019, 16:34: All TPs at speed


Conditioning completed over the weekend by RIB operations. The shutter was left closed on the module, so no beam could be seen on the FC. Conditioning otherwise OK.

Entry  Thursday, August 27, 2015, 10:10, Anders Mjos, Conditioning Station, Standard Operation, TM2, ZrC#7, Conditioning new Source Tray 2015-08-31_Service_Cap_Sparking_on_Rubber_Plug.pdfTM2_Source_Tray_with_ZrC#7.docxVacuum_gague_calibration.xlsx

Thursday, August 27, 2015, 10:10: Started water system. TK2 level reduced from 24.9 to 23.5 in. 

IG2 not working. Force is ON.


EE in conditioning mode.

 Friday, August 28, 2015, 08:39: BIAS/EL 10 / 5 kV

Friday, August 28, 2015, 08:49: BIAS/EL 20 / 10 kV

Friday, August 28, 2015, 09:18 BIAS OFF. Ramping to 200/100 A at 2/1 A/min

Friday, August 28, 2015, 15:46: Target at 76 / 38 A. Changed ramping to 100/40 at 1/0.5 A/min

Friday, August 28, 2015, 22:20: Ramping down heaters.


Saturday, August 29, 2015, 09:50: RGA off. PNG1 7.85E-6 / 5.0E-6 T (EPICS / local)

Saturday, August 29, 2015, 10:11: BIAS/EL 20 / 10 kV

Saturday, August 29, 2015, 10:28: BIAS/EL 30 / 15 kV. Some sparking around 29 kV

Saturday, August 29, 2015, 10:43: 10 min w/o sparking

Saturday, August 29, 2015, 10:55: BIAS/EL 32 / 15 kV. Small vacuum responses for every 100 V increase

Saturday, August 29, 2015, 11:03: Sparking at 33 kV

Saturday, August 29, 2015, 11:12: BIAS/EL 34 / 15 kV

Saturday, August 29, 2015, 14:22: Power has returned after site-wide power outage, but no communication with IOC yet.

Saturday, August 29, 2015, 15:13: IOC restarted.

Saturday, August 29, 2015, 15:14: Starting turbos

Saturday, August 29, 2015, 15:22: Turbos at speed.

Saturday, August 29, 2015, 15:22 : MP3 not running. Investigating

Saturday, August 29, 2015, 15:47: Reset MP3 breaker (wait 5 min for capacitors to empty)

Saturday, August 29, 2015, 15:48: Water system running


Sunday, August 30, 2015, 09:38: BIAS/EL 10 / 5 kV

Sunday, August 30, 2015, 09:54: BIAS/EL 20 / 10 kV 

Sunday, August 30, 2015, 10:01: BIAS/EL 30 / 15 kV 

Sunday, August 30, 2015, 10:12: No sparking

Sunday, August 30, 2015, 10:27: BIAS/EL 35 / 15 kV 

Sunday, August 30, 2015, 10:37: No sparking

 Sunday, August 30, 2015, 10:52:  BIAS/EL 37.5 / 15 kV 

Sunday, August 30, 2015, 11:00:  BIAS/EL 37.5 / 20 kV. No sparks

Sunday, August 30, 2015, 11:22:  BIAS/EL 40 / 20 kV 

Sunday, August 30, 2015, 11:34: No sparks

Sunday, August 30, 2015, 12:00: BIAS/EL 42 / 21 kV

Sunday, August 30, 2015, 12:32: Sparking at 43.5 kV. Tripped off PS on conductivity (spark response)

Sunday, August 30, 2015, 12:44:  BIAS/EL 40 / 20 kV. ISAC Ops will monitor over lunch

Sunday, August 30, 2015, 14:20: BIAS/EL 43 / 20 kV

Sunday, August 30, 2015, 14:41: Sparking at 43.5 kV. lowered to 43 kV

Sunday, August 30, 2015, 15:56: Sparking every 5-10 min at 43.4 kV not able to increase to 43.5 kV. Sparking is causing signal response on water conductivity and drop in IG1 and IG1S readings during sparking.


Monday, August 31, 2015, 08:33: BIAS/ EL to 40 / 20 kV in 9 min w/o any sparking

Monday, August 31, 2015, 08:44: No sparking

 Monday, August 31, 2015, 08:46: BIAS/ EL to 42 / 20 kV

Monday, August 31, 2015, 08:53: BIAS/EL 43 / 20 kV. Two vacuum/current responses

Monday, August 31, 2015, 09:47: BIAS off to investigate spakring.

David observed sparking coming from under the HV cover on TM2 twice. When the cover was removed, spark marks on a rubber plug for the water lines was observed. The plug with marks and one more plug was removed from the service cap as it is not used. See attached PDF.

Monday, August 31, 2015, 10:09: BIAS/ EL to 40 / 20 kV in 8 min w/o any sparking

Monday, August 31, 2015, 10:15 BIAS/EL 43.5 / 22 kV. One small spark

Monday, August 31, 2015, 10:30: No sparks

Monday, August 31, 2015, 10:35: BIAS/EL 44 / 22 kV.

Monday, August 31, 2015, 11:00: BIAS/EL 45 / 22 kV.

Monday, August 31, 2015, 11:31: PNG1 taken out by a spark

Monday, August 31, 2015, 12:04: Reset power to PNG1 controller. PNG1 back online.

Monday, August 31, 2015, 12:25: BIAS tripped on IG1 after a spark at 47.1 kV

Monday, August 31, 2015, 12:39: BIAS/EL 47 / 24 kV. No sparks for 5 min

Monday, August 31, 2015, 12:54: PNG1 taken out by spark at 47.7 kV

Monday, August 31, 2015, 13:02: BIAS/EL 48 / 24 kV

Monday, August 31, 2015, 13:07: No sparks

Monday, August 31, 2015, 13:25: BIAS/EL 49 / 24 kV

Monday, August 31, 2015, 13:30: No sparks

Monday, August 31, 2015, 13:37: PNG1 returned after a spark

Monday, August 31, 2015, 14:06: BIAS/EL 50 / 25 kV

Monday, August 31, 2015, 14:45: No sparks.

Monday, August 31, 2015, 15:15: BIAS/EL 51 / 25 kV

Monday, August 31, 2015, 15:38: BIAS/EL 51 / 30 kV

Monday, August 31, 2015, 16:01: Tested XCB0 and YCB0 to 5 kV. Some sparking. Tested CCB0 to 4 kV. No sparking.

Monday, August 31, 2015, 16:50: No sparks for 1 hour at 51 / 30 kV.

Monday, August 31, 2015, 17:00: HV off.

 Monday, August 31, 2015, 17:07: EE at 2 kV, R= 1 MOhm

Monday, August 31, 2015, 17:08 : EE off.

Monday, August 31, 2015, 17:10: Water off.

Monday, August 31, 2015, 17:12 : Vacuum gauges off. Turbos off. Roughing pump off.

Entry  Wednesday, March 29, 2017, 11:42, Anders Mjos, Conditioning Station, Standard Operation, TM4, UC#19, Conditioning UC#19 UC#19.docxTCS-2017-03-29_UC#19.rgaTCS-2017-03-30_UC#19.rgaTCS-2017-04-03_UC#19.rga

 Wednesday, March 29, 2017, 11:37: RGA on

Wednesday, March 29, 2017, 13:51: Water package on


Thursday, March 30, 2017, 08:50: Restarted chiller. OP3 fault on both VFDs.

Thursday, March 30, 2017, 10:18: Roughing

Thursday, March 30, 2017, 16:02: Configured EE to conditioning mode. All power supplies for SIS operation was checked to be working earlier.

Thursday, March 30, 2017, 16:06: BIAS / EL 10 / 5 kV and 0.02 / 0.04 mA

Thursday, March 30, 2017, 16:10: BIAS / EL210 / 10 kV and 0.03 / 0.06 mA

Thursday, March 30, 2017, 16:11: IG1 at 7.8E-7 T, IG2 at 2.3E-6 T

Thursday, March 30, 2017, 16:21: No sparking. Ramping down for the day


Friday, March 31, 2017, 08:32: BIAS / EL 20 / 10 kV and 0.03 / 0.06 mA

Friday, March 31, 2017, 08:32: IG1 at 4.2E-7 T, IG2 at 1.4E-6 T

Friday, March 31, 2017, 08:45: BIAS / EL 25 / 12.5 kV and 0.04 / 0.08 mA. Some minor vacuum responses around 24 kV

Friday, March 31, 2017, 10:03: BIAS current was limiting at 26 kV after EPICS restart. Updated limit

Friday, March 31, 2017, 10:10: BIAS / EL 30 / 15 kV and 0.04 / 0.09 mA. Vacuum and current responses when increasing BIAS.

Friday, March 31, 2017, 10:54: BIAS / EL 35 / 17.5 kV and 0.05 / 0.10 mA.

Friday, March 31, 2017, 11:24: BIAS / EL 40/ 20 kV and 0.05 / 0.11 mA.

Friday, March 31, 2017, 11:43: BIAS / EL 45/ 22.5 kV and 0.06 / 0.13 mA.

 Friday, March 31, 2017, 13:47: No sparks for ~90 min. Ramping down HV

Friday, March 31, 2017, 13:58: Starting auto-ramping heaters to 100 / 100 A at 1 A/min. Good/bad vacuum at 3E-6 and 5E-6 T on IG2. EE to 1500 V

Friday, March 31, 2017, 14:03: BIAS / EL / EE at 30 / 15 / 1.5 kV and 0.04 / 0.09 / 1.5 mA


Saturday, April 01, 2017, 10:58: Continue auto-ramping to 440 A / 200 A.

Saturday, April 01, 2017, 17:17: IG1 / IG2 to 1.7E-6 and 3.6E-6 T at 440 A. Reduced manually to 430 A to limit outgassing.

Saturday, April 01, 2017, 18:03: Discovered TP2 had tripped off. Likely causing "increased outgassing" above.

Saturday, April 01, 2017, 18:12: TP2 back at speed.

Saturday, April 01, 2017, 23:25 : TP2 fault from spark. Restarting. Ramping down heaters.


Sunday, April 02, 2017, 06:45: Found source to be tripped on water flow TGHT at around 1:15 am. Vacuum and water flow otherwise ok. Set source to 0. To be investigated Monday. 


Monday, April 03, 2017, 11:05: The paddle wheel on the TGHT line was not turning this morning. After running water through a bypass an reconnecting to the module, flow was restored, but it appeared to be at a relatively low rate.

Monday, April 03, 2017, 12:00: BIAS / EL / EE at 30 / 15 / 1.5 kV and 0.03 / 0.09 / 1.5 mA

Monday, April 03, 2017, 12:18: Tested TGHT / TBHT to 20 / 10 A.

Monday, April 03, 2017, 12:18: Increased EE to 2 kV and 2.0 mA

Entry  Thursday, November 24, 2016, 09:33, Anders Mjos, Conditioning Station, Standard Operation, TM2, UC#18, Conditioning UC#18 

Thursday, November 24, 2016, 09:33: Water package on

Thursday, November 24, 2016, 09:43: TCS:WPV1 shows only 12% open. A visual inspection confirms the valve is fully opened. Controls will be contacted to troubleshoot

 

Entry  Wednesday, August 03, 2016, 08:08, Anders Mjos, Conditioning Station, Standard Operation, TM4, UC#17, Conditioning UC#17 UC#17.docxTCS-2016-08-03_UC#17.rgaTCS-2016-08-08_UC#17.rga

Wednesday, August 03, 2016, 08:08: RGA on

Wednesday, August 03, 2016, 11:25: Configured EE to be connected to EE PS (not grounded)

Wednesday, August 03, 2016, 11:25: PS on

Wednesday, August 03, 2016, 11:32: BIAS / EL / EE to 20 / 10 / 1 kV

Ramping set to 40 / 20 A at 1 / 0.5 A/min. Good / bad vacuum at 2.0 / 2.2 E-6 T (IG2). Vacuum too high.

Wednesday, August 03, 2016, 13:02: BIAS / EL / EE to 30 / 15 / 1.5 kV

Wednesday, August 03, 2016, 15:59: BIAS / EL / EE to 35 / 17.5 / 1.5 kV. Some conditioning from 30 kV


Chiller staging stopped working around midnight. TGHT and TBHT ramped down by ISAC operators.

Thursday, August 04, 2016, 08:14: Ramping target to 50 / 25 A

Thursday, August 04, 2016, 08:22: Cycled power on chiller to reset alarm. Repeated again 5 min later

Thursday, August 04, 2016, 08:37: BIAS / EL / EE to 30 / 15 / 1.5 kV

Thursday, August 04, 2016, 09:36: Continue ramping to 100 / 50 A

Thursday, August 04, 2016, 11:32: Continue ramping to 120 / 60 A

Thursday, August 04, 2016, 14:50: ramping down


Friday, August 05, 2016, 07:09: Started cooling system

Friday, August 05, 2016, 07:56: Started ramping to 100 / 50 A

Friday, August 05, 2016, 14:27: TGHT / TBHT at 253 / 126 A.

Friday, August 05, 2016, 14:30: Ramping down at 2 / 1 A/min

Friday, August 05, 2016, 15:27: BIAS / EL / EE off


Monday, August 08, 2016, 08:15: Continue ramping. : BIAS / EL / EE to 30 / 15 / 1.5 kV

Monday, August 08, 2016, 14:36 TGHT / TBHT at 260 / 130 A. Ramping down at 2 / 1 A/min

Monday, August 08, 2016, 15:30: BIAS / EL off. EE remains at 1 kV.

Monday, August 08, 2016, 22:56: RGA off. Water system fault. Running CP1 manually

Monday, August 08, 2016, 22:57: EE off.

Monday, August 08, 2016, 22:58: Vacuum off

Entry  Wednesday, June 08, 2016, 08:25, Anders Mjos, Conditioning Station, Standard Operation, TM4, UC#16, Conditioning UC#16 UC#16.docxTCS-2016-06-08_UC#16.rga

 Wednesday, June 08, 2016, 08:15: RGA on


Thursday, June 09, 2016, 09:00: Water on by David. TK2 level dropped by about 1.5 in.

Thursday, June 09, 2016, 10:30: BIAS / EL / EE to 10 / 5 / 0.5 kV

Thursday, June 09, 2016, 10:44: Started heater ramp. TGHT / TBHT to 40 / 20 A at 1 / 0.5 A/min. IG2 vacuum limits 2E-6 / 3E-6 T

Thursday, June 09, 2016, 11:59: Continue ramping to 100 / 50 A.


Friday, June 10, 2016, 08:04: Continue ramping to 300 / 150 A IG2 vacuum limits 1.9E-6 / 2.3E-6 T

Friday, June 10, 2016, 21:32: Stopped ramping at 275 A /  138.5 A


Saturday, June 11, 2016, 11:40: Ramped to 281 A / 140 A


Sunday, June 12, 2016, 08:31: Ramped to 290 A / 145 A

Sunday, June 12, 2016, 08:49: Ramped to 300 A / 150 A


Monday, June 13, 2016, 08:06: Continue ramping to 400 / 200 A

Monday, June 13, 2016, 17:00: TGHT / TBHT at 390 A / 195 A.

Monday, June 13, 2016, 17:17: BIAS / EL / EE to 30 / 15 / 1.5 kV

Monday, June 13, 2016, 18:02: Ramping down TGHT / TBHT at 2 / 1 A/min

Monday, June 13, 2016, 21:39: Source off. Water, RGA, vacuum off.

Entry  Monday, April 20, 2015, 10:12, Anders Mjos, Conditioning Station, Standard Operation, TM1, UC#12, Conditioning UC#12 

Monday, April 20, 2015, 09:35: Started cooling water circulation

HV cover did not fit due to interference with the air sampling valve. Target Hall will have to be locked out for conditioning to proceed. WP I2015-04-20-2

Monday, April 20, 2015, 10:09: Started chiller staging

Target hall and HV enclosure has been locked out.

Monday, April 20, 2015, 13:45: 22 kV, 0.04 mA BIAS 

Monday, April 20, 2015, 14:58: No sparks observed. BIAS off


Tuesday, April 21, 2015, 08:26:  Starting heater auto-ramp to 500 / 230 A at 2 A/min

Tuesday, April 21, 2015, 08:32: BIAS/EE to 20 / 1.5 kV

Tuesday, April 21, 2015, 12:59: TGHT / TBHT at 327 / 230 A. Pausing the auto-ramping. Bill will be monitoring TCS while I am off-site.

Tuesday, April 21, 2015, 15:56: Continue auto-ramping

Tuesday, April 21, 2015, 17:34: Auto-ramping finished. TGHT / TBHT at 500 / 230 A


Wednesday, April 22, 2015, 08:43: Vacuum tripped heaters and BIAS over night. Switching off to do a leak check on the service cap.

Wednesday, April 22, 2015, 09:03: Stopping turbo and roughing pump for David. David is preparing a leak check.

Wednesday, April 22, 2015, 09:06: Started roughing pump.

Wednesday, April 22, 2015, 09:22: Roughing pump trips off after a few minutes of pumping.

Wednesday, April 22, 2015, 13:11: Stopped water flow.

Wednesday, April 22, 2015, 16:07: Starting turbos 

Wednesday, April 22, 2015, 16:15: All turbos at speed.


David found a leak on the window line this morning.
https://elog.triumf.ca/TIS/RH-ISAC/896

Thursday, April 23, 2015, 11:12 : Starting cooling pack

Good vacuum limit on IG1 changed from 7E-5 T to 1E-5 T

Thursday, April 23, 2015, 12:53 : Starting heater auto-ramp to 500 / 230 A at 2 A/min. Bad vacuum limit reduced to 8E-6 T

Thursday, April 23, 2015, 13:03 : BIAS/EE to 15/ 1.5 kV

Thursday, April 23, 2015, 13:28 : BIAS/EE to 20/ 1.5 kV. No sparking observed

Thursday, April 23, 2015, 17:23: Auto-ramping finished. TGHT / TBHT at 500 / 230 A

Thursday, April 23, 2015, 17:51: Fault on cooling circuit (Fault 2).. Manually starting CP1

Thursday, April 23, 2015, 18:01: Cycled power of chiller unit. System recovered. Enabled staging.

Thursday, April 23, 2015, 18:42 : One minor spark observed. Starting cool down at 12 and 9 A/min

Thursday, April 23, 2015, 19:51 : Heaters and BIAS off


Friday, April 24, 2015, 08:21 : Water cooling off

Entry  Thursday, November 09, 2017, 10:39, Anders Mjos, Conditioning Station, Standard Operation, TM2, Ta#55, Conditioning Ta#55 

Thursday, November 09, 2017, 10:40: BIAS / EL to 30 / 15 kV. 400 uA on BIAS

Bias was stable for 1 hour. Handed over to RIB ops for heater conditioning.

Entry  Thursday, September 28, 2017, 17:44, Anders Mjos, Conditioning Station, Standard Operation, TM2, Ta#54, Conditioning Ta#54 Ta#54.docxTa#54_BIAS_current_vs_voltage.xlsx

Thursday, September 28, 2017

Cooling water not yet connected to TM.

High leakage current still observed. 200 uA at 22 kV. Did not go past 25 kV. 


Friday, September 29, 2017, 14:05: Started heater ramping to 580 / 200 A at 1 A/min

Friday, September 29, 2017, 14:09: BIAS / EZL / EE at 20 / 10 / 1.5 kV. BIAS current at 90 uA


Monday, October 02, 2017, 10:29: Accidentally set BIAS current limit to 0 A (step size too large) at 28 kV. This also caused the TGHT to got to 0 A. Recovered to 580 A in 10 - 15 s.

Monday, October 02, 2017, 12:07: Ramping down heaters at 2 A / min

Entry  Wednesday, June 28, 2017, 16:43, Anders Mjos, Conditioning Station, Standard Operation, TM4, Ta#52, Conditioning Ta#52 Ta#52.docx

NEW HV cable for BIAS installed earlier this week.

Wednesday, June 28, 2017, 16:42: BIAS at 20 kV

Wednesday, June 28, 2017, 16:46: BIAS at 30 kV, EZL at 15 kV

Wednesday, June 28, 2017, 17:00: BIAS at 35 kV, EZL at 17.5 kV


The voltage response on TBHT and TGHT changed as the target was heated up. This was later determined to be due to target shorting to heat shield and the grounding of the power supplies being achieved at the HV pedestal in the target hall and not in the HV enclosure as is done online. When this was changed, the target operated normally again.

Entry  Thursday, April 13, 2017, 11:44, Anders Mjos, Conditioning Station, Standard Operation, TM2, Ta#51, Conditioning Ta#51 

 Thursday, April 13, 2017, 11:43: Water package started.

Entry  Monday, May 16, 2016, 13:26, Anders Mjos, Conditioning Station, Standard Operation, TM2, Ta#48, Conditioning Ta#48 Ta#48.docx

 Monday, May 16, 2016, 13:20: BIAS/EL/EE 30 / 15 / 1.5 kV

Monday, May 16, 2016, 13:20: Ramping TGHT / TBHT to 580 / 220 A at 2 A/min. IG2 1E-6 / 2E-6 T

Monday, May 16, 2016, 15:45: Paused ramping.

Monday, May 16, 2016, 15:00: Resumed ramping

Monday, May 16, 2016, 16:23: Stopped ramping for the day. TGHT / TBHT at 310 / 220 A. FC at 6.2E-7 A


Tuesday, May 17, 2016, 08:00: Continue ramping.


Wednesday, May 18, 2016, 09:40: BIAS / EL / EE to 35 / 17.5 1.7 kV


Thursday, May 19, 2016, 04:07: BIAS dropped to 0. Likely caused by a power bump.

Thursday, May 19, 2016, 08:05: BIAS returned to 35 kV. Increased EL to 22 kV to maximize FC current.

Thursday, May 19, 2016, 08:11: TBHT to 230 A

Thursday, May 19, 2016, 08:22: Ramping down TGHT / TBHT

Thursday, May 19, 2016, 10:41: BIAS / EL / EE off

Thursday, May 19, 2016, 14:00: TGHT / TBHT off


Friday, May 20, 2016, 14:39: RGA off.

Entry  Wednesday, July 10, 2019, 11:59, Carla Babcock, Conditioning Station, Repair, TM4, Dummy HP SIS target, Conditioning TM4 w/ new ST up to 50kV 

David raised the bias to 49.5kV. Module is still sparking mainly on top. Humidity is super high.

Wednesday, July 10, 2019, 09:50 : sitting at 49.7kV for a coupe mins, big spark in vacuum took everything down.

Wednesday, July 10, 2019, 10:16 : Bias at 50kV drawing 0.1mA but looking pretty jumpy. Left it here for ~5 mins then had to turn down bias for TH work.

Wednesday, July 10, 2019, 13:33 : Back at 50kV on bias with no problems.

Wednesday, July 10, 2019, 13:46 : 10 mins at 50kV, will try to go a bit higher

Wednesday, July 10, 2019, 14:06 : Everything sparked off while sitting at 50.6kV. This seems a bit futile....

Wednesday, July 10, 2019, 14:15 : Back at 50.1kV with no problems

 Wednesday, July 10, 2019, 14:33 : Up to 51kV

Wednesday, July 10, 2019, 15:20 : Difficult to go above 51.4. Turning up EZL since there were a couple sparks to it. -> Putting this up causes significant sparks between HV bias and EZL in vacuum at 5kV on the EZL, 51.1kV on bias. Leaving EZL @ 5kV

Wednesday, July 10, 2019, 16:04 : Around 52.2 sparking on the top of the module

Wednesday, July 10, 2019, 16:36 : 53kV

Wednesday, July 10, 2019, 17:16 : up to 54kV without much trouble

Wednesday, July 10, 2019, 17:53 : Sitting at 55kV for about 4mins when a spark tripped off everything. Will try to bring it back to sit stable at 55kV tomorrow


 

Thursday, July 11, 2019, 10:28 : TM4 up to 54.9kV without too many problems, EZL at 25kV. Will sit here for a little while

Thursday, July 11, 2019, 10:48 : 20mins at 54.9kV, going to 55kV

Thursday, July 11, 2019, 11:14 : 25 mins at 55kV and everything sparked off

Thursday, July 11, 2019, 11:26 : Back up to BIAS / EZL = 54.8kV / 26kV. Checked that the TGHT and TBHT power supplies have not been killed by sparks, everything looks fine.

Thursday, July 11, 2019, 12:56 : Sat at 49.6kV for 1.5hrs with one spark.

Thursday, July 11, 2019, 14:02 : Been sitting at 55kV for 2 hrs now with one spark.


Friday, July 12, 2019, 08:09 : Back up to 52kV easily, then had to reduce step size to 100V to keep going

Friday, July 12, 2019, 08:47 : 56kV

everything sparked off at 56.5 or so

 

Entry  Tuesday, July 09, 2019, 09:15, Carla Babcock, Conditioning Station, Repair, TM4, Dummy HP SIS target, Conditioning TM4 w/ new ST up to 45kV 

Left TM4 at 40kV overnight with no previous heating. There was only one real spark which turned off TP2 but ops turned it back on. Ramping up again.

Tuesday, July 09, 2019, 09:13 : At 45kV the module is sparking on the top pretty regularly. Turned down and David will remove cover and lock out target hall.

Tuesday, July 09, 2019, 16:30 : Went up to 45kV pretty easily now.

Tuesday, July 09, 2019, 16:32 : Everything tripped at 46.5kV. Looks to be a spark outside the vacuum. TM4 sparking much more outside the vacuum than last checks done without the source tray...

Tuesday, July 09, 2019, 16:43 : Everything easy up to 46.8kV, then sparking a bit. Most of the sparks are outside the vacuum. Sitting at BIAS / EZL = 47.1kV / 28kV for a couple mins before ramping down.

Tuesday, July 09, 2019, 16:57 : 10 mins at 47.1kV with not problems. Continuing up still looks like it is really sparking a lot outside the vacuum.

Entry  Monday, July 17, 2017, 16:28, Anders Mjos, Conditioning Station, Development, TM3, No target, Conditioning TM3 TM3_HV_conditioning_2017-07-17.docx

50 kV stable with less than 1 spark/h during the weekend by RIB obs.

Today 57 kV reached, but observed sparking on the resistors of the new HV cable. The cable will be removed to take out the resistors, before reinstalling it.

The target hall was locked out, but has now been reopened. This was to avoid sparking to the HV cover.

ELOG V2.9.2-2455