Wednesday, July 10, 2013, 10:20 : Turbos off. Vacuum at 1.3 E-7 T

Wednesday, July 10, 2013, 11:23: Venting chamber 

Wednesday, July 10, 2013, 12:00: Vented

Wednesday, July 10, 2013, 12:38: Roughing

Wednesday, July 10, 2013, 12:54: Pumping on gas lines for 10 min.

Wednesday, July 10, 2013, 12:58: Starting Turbos

Wednesday, July 10, 2013, 13:07 : Both turbos at speed. TP1A timed out one.

Wednesday, July 10, 2013, 13:08 : Vacuum at 1.5E-5 T

T/C connectors removed from HV rack. All connections put to ground.

Thursday, July 11, 2013, 08:43: Opened up cooling water supply. Vacuum stable at 2.2E-7 T

Thursday, July 11, 2013, 08:58: Starting ramp up of TGHT and TBHT to 100A and 50A respectively to verify proper function of the new power supply set-up.

Thursday, July 11, 2013, 09:20: TBHT reached 50A. EPICS read back 51.2A / 0.186V. P/S local read back 51A / 0.20V

Thursday, July 11, 2013, 09:44: BIAS 30kV, EE -800V, EZL 13kV

Thursday, July 11, 2013, 09:44: TGHT reached 100A. EPICS read back 100.2A / 0.488V. P/S local read back 99A / 0.46V

Thursday, July 11, 2013, 09:46: IV4 opened

Thursday, July 11, 2013, 09:53: Starting ramp up of TGHT and TBHT to 500A and 200A respectively

Thursday, July 11, 2013, 10:00: Coil and Anode to 50A and 200V respectively

Thursday, July 11, 2013, 14:59: TGHT and TBHT to 500A and 207A EPICS read back. Local read back 500A and 205A.

Thursday, July 11, 2013, 15:03: Opening gas lines into chamber.

Thursday, July 11, 2013, 15:12: Starting ramp up of TGHT and TBHT to 550A and 220A respectively

Thursday, July 11, 2013, 15:21: Some current on FC0 at TBHT 210A

Thursday, July 11, 2013, 15:25: He leak valve at 5.5

Thursday, July 11, 2013, 16:07: Will leave target in current condition over night and continue the test tomorrow.

Friday, July 12, 2013, 08:25: Target ran without interruptions overnight. Started magnet scan. Masscorr constants had to be reentered after the reboot of EPICS.

Friday, July 12, 2013, 10:30: TMS:Q1 and TMS:Q6 found off. Restarted.

Friday, July 12, 2013, 10:32: Starting TGHT ramp to 580A. Increased EE to -1200V

Friday, July 12, 2013, 10:47: Reached 580A. EPICS 581.7A / 5.724V. PS local 580A / 5.69V.

Friday, July 12, 2013, 10:51: Starting manual ramp of TBHT.

Friday, July 12, 2013, 11:14: Autoramping TBHT to 250A

Friday, July 12, 2013, 11:23: Reached 250A. EPICS 259.6A / 1.934V. PS local  256A / 1.93V

Friday, July 12, 2013, 11:35: Manual ramp. ANODE current @ 2mA seen at TBHT @ 262A.

Friday, July 12, 2013, 11:41: BIAS spark seen on current and vacuum.

Friday, July 12, 2013, 12:09: TBHT:RDCUR  at 269A

Friday, July 12, 2013, 13:18:TBHT:RDCUR  at 280A.. PS local 277A.

Friday, July 12, 2013, 13:21: EE to -1500V / 510uA

Friday, July 12, 2013, 13:30: Ne leak opened.

Friday, July 12, 2013, 14:12: Mass scan started.

Friday, July 12, 2013, 15:04: A thumb sound and flash was seen. Confirmed with AAPS operator. TMS:SX3 went off. TMS:MB1 does not respond to current adjustments.

Friday, July 12, 2013, 15:53: The source will be left in it's present state over the weekend.

Saturday, July 13, 2013, 07:10: FC0 Bias found off. Restarted. Could be related to sparking. 

No further issues over the weekend.

Monday, July 15, 2013, 09:10: Starting mass scan.

Monday, July 15, 2013, 10:39: Magnet at Ne (20 amu). FC6 1.3E-10. Ne gas off: FC6 < 1E-11

Monday, July 15, 2013, 10:45: Ne gas on.

Monday, July 15, 2013, 10:50: EE to 2kV. EE:RDCUR at 684 uA.

Monday, July 15, 2013, 13:27: Manually increasing TBHT to 290A. Local 287A.

Monday, July 15, 2013, 15:07: Cooling down target.

Monday, July 15, 2013, 15:26: COIL off. Gases off (earlier). ANODE off.

Monday, July 15, 2013, 15:31: IV4 closed.

Tuesday, July 16, 2013, 08:21: BIAS, EZL and EE to zero.

Tuesday, July 16, 2013, 08:24: Turbos off. Vacuum at 1.3E-7 T.

Tuesday, July 16, 2013, 15:12: Venting

Tuesday, July 16, 2013, 15:38: Target removed.

Tuesday, March 19, 2013, 12:32 : Turbos off (vaccum at 2E-7 Torr)

Tuesday, March 19, 2013, 13:35: Venting

Target SiC#28 LP-RFQ inserted

New bolts used. Old bolts removed.

All bolts torqued to 120 in lbs

By Sebastian (SR) & Henning

modification of 9 Pin connector needed to match wiring in TM4 (see separate e-log entry)

Tuesday, March 19, 2013, 18:32 : started roughing - SR

Tuesday, March 19, 2013, 18:52: started turbos - SR

Tuesday, March 19, 2013, 18:57: TSGIP1 on - SR

Tuesday, March 19, 2013, 19:00: turbos at speed - SR

Tuesday, March 19, 2013, 19:02: vacuum at 1.68E-5T

By Anders

Wednesday, March 20, 2013, 08:18: Opened cooling water. Vacuum stable at 6.8E-7 Torr

By Sebastian (SR) & Henning

Wednesday, March 20, 2013, 11:39: 9PIN connector in HV cage connected

        4,5,6,9 on GND 1,2 to RF, 7,8,RFoffest,Source for now also on GND

        RF: 800kHz, 20Vampl, 0.128mA

        HV cage locked up for heating

Wednesday, March 20, 2013, 16:42: heating is taken care of by ISAC operations, now at 300A / 3V TGHT  and 250A / 1.47V TBHT reading on the panel is really close

        Friedhelm restarted some of the CANBUS ports, since not all optics were working properly

Thursday, March 21, 2013, 10:53 start cooling down

       Vacuum not perfect was around 2E-6T, over nigth not full current

       Suppression tested yesterday: full beam (SRC +3V, others GND) was 40nA, while no signal on FB0B with SRC +3V, IGOffset&Exit +25V

       !!!!! but short on #7 --> 2nd Repeller, was OK when tested, after some minutes on 25V short was there, reading now (Thursday, March 21, 2013, 10:58 ) <1OHM, will be checked while heating down

       Magnet had wrong polarity - so no mass scans yesterday evening, Friedhelm looked into this this morning

      Mass scan only for good transmission mode (SRC +3V) this morning - see attached scan (seen Na, Al, K, Ca, Cr, Rb, Sr, Cs and Ba)

Thursday, March 21, 2013, 12:26: stopped turbos

     #7 still short

By Anders

Thursday, March 21, 2013, 13:25: Venting

   Thursday, March 21, 2013, 14:46: started roughing

                Target was out, visibly inspected, nothing to be seen, no short on the target - wiring of the 9Pin connector shows short circuit inside vacuum chamber

                Wires removed - short could be reproduced with the strandings of the shielding  from the kapton twisted pairs going into the peek connector

               wire shieldings now fixed to position further away with Cu wire

               all wires against ground and each other tested for holding 250V - all fine

               everything reconnected and target put in, torcked w 120 inch pounds

Thursday, March 21, 2013, 15:05 : turbos started

Thursday, March 21, 2013, 15:14: turbos at speed

Thursday, March 21, 2013, 15:17: vacuum at 1.4E-5T

Thursday, March 21, 2013, 18:01: vacuum at 1.45E-6T opening water lines - vacuum is stable

Thursday, March 21, 2013, 19:19 : vacuum at 8.6E-7T - start ramping heater to 580A / 250 A

Friday, March 22, 2013, 00:08: target is heated full way up

           setpoint 570A and 7.250V voltage limit

           readback 564.1A and 7.201V  --> needs more voltage than the normal target !

           vacuum at 1.2E-6T

Friday, March 22, 2013, 15:15: vacuum at 5.4E-7T

         preparing for HV test and mass scan

        transmission mode: Source +3V, everything else on GND: 12nA - mass scan see attachment

       suppression mode 1: Source -15V, everything else on GND: 20pA - mass scan see attachment

       suppression mode 2: Source +3V, everything else on +25V: <1pA - FC0 current while biasing see attachment

       NOTE:  the legs of the target are glowing differently, the left leg (view from the lid side onto the target unit) glows brighter, this side was open during the sintering process of the SiC and needed more alignment at the jig --> see attached picture

       NOTE2: there is a slight increase in TGHT voltage over time: in ~ 22h from 7.201V to 7.216V

Friday, March 22, 2013, 21:33 : vacuum at 4.8E-7, start ramping down

Friday, March 22, 2013, 22:47: heaters down and turned off, vacuum at 2.7E-7T

Monday, March 25, 2013, 00:15: vacuum at 1.4E-7T, IG off, turbos off

By Anders

Monday, March 25, 2013, 08:18: Venting

Monday, March 25, 2013, 08:33: Purging water lines

Monday, March 25, 2013, 08:42: Target removed

 Tuesday, May 15, 2012, 10:13: Turbo pumps at speed. Vacuum at 1.4E-5.

Tuesday, May 15, 2012, 12:03: Cooling lines opened. Vacuum stable at 1.6E-6

Tuesday, May 15, 2012, 12:17: Target ready to be heated and biased.

Did the HV conditioning up to 30kV and started to ramp up the heaters to 580A and 230A.

Thursday, May 17, 2012, 08:36: Turbo pumps switched off in preparation of target removal.

Thursday, May 17, 2012, 08:51: Purging cooling lines.

Thursday, May 17, 2012, 08:55: Venting.

Thursday, May 17, 2012, 09:21: Target removed

Anders Mjos wrote:

A chip of insulator material was detected below the lower target insulator stand-off (attachment - left picture). The chip may come from the tube heater insulator above (attachment - right picture). The chip will be further investigated when the target is removed.

 The chip came from the lower insulator stand-off on the target assembly (see attachment). After investigating the chipped insulator, it was decided (Pierre, Friedhelm, Anders) not to replace it - as the risk involved may be less than the risk involved in replacing.

 Thursday, May 17, 2012, 13:15

After the test-stand, the EE was removed for inspection.  It was discovered that there were some solid residues coated on the extraction electrode and the common plate, but the ionizer tube was clean (see attachment#1).  Some samples were collected and will try to do some analysis.  This problem has been seen before but it's still not clear why the solid residues form after the test-stand.  

The EE & the common plate were cleaned with acetone and re-assembled back to the target.  

Friday, September 23, 2011, 16:4: Target installed and roughing started.

Friday, September 23, 2011, 17:12: Started turbo pumps. 

Monday, September 26, 2011, 09:00: Opened up water flow. Vacuum rose from 3e-6 to 3e-5 torr in 30 s. Closed water flow.

Monday, September 26, 2011, 09:00: Venting for leak check.

Monday, September 26, 2011, 10:20: Pressurized water lines with 120 PSI He. Leak detected on right water line connection to heat shield.

Monday, September 26, 2011, 12:00: Leak repaired. Pumping down. Kapton added on target  heater cooling line to prevent short with cooling line for FEBIAD coil.

Monday, September 26, 2011, 12:47: Started turbo pumps. 

Monday, September 26, 2011, 15:45: Opened up water flow. Vacuum stable at 3.5e-6 torr.Target ready to be heated.

The gas system has been checked. The variable valve opens at about 7.55 very fast. Please be careful when using it. Stepsize for opening around this value should be 0.01. Gas lines have been pumped with pump in the high voltage rack. Ne leak was opened to release pressure.

Started the HV conditioning: TSG:BIAS=30kV

Started the heaters conditioning: TGHT up to 580A and TBHT up to 230A.

Today, did a did a mass scan: plotdump-local-clean.txt Sep30 11 12-20-08.txt

Optimized a bit the tune with Friedhelm, then started the Target Cooldown.

Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.

Aurelia Laxdal wrote:

Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.

 Monday, October 03, 2011, 13:45: Venting.

Anders Mjos wrote:

Aurelia Laxdal wrote: Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.  Monday, October 03, 2011, 13:45: Venting.

 Monday, October 03, 2011, 14:45

• Target was visually  inspected and found to be ready to go online.
• No burn marks found on the 9-pin connectors.
• Pumping down. Target will be stored under vacuum for now. Target is scheduled to go to Hot Cell on Oct. 20th. Electrical connections (target/tube heater + coil) are not connected

Anders Mjos wrote:

Anders Mjos wrote: Aurelia Laxdal wrote: Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.  Monday, October 03, 2011, 13:45: Venting.  Monday, October 03, 2011, 14:45 Target was visually  inspected and found to be ready to go online. No burn marks found on the 9-pin connectors. Pumping down. Target will be stored under vacuum for now. Target is scheduled to go to Hot Cell on Oct. 20th. Electrical connections (target/tube heater + coil) are not connected

 Wednesday, October 12, 2011, 13:15: Venting

Wednesday, October 12, 2011, 14:15: Target brought back to lab for inspection and final check.

Tuesday, February 06, 2024, 11:45: Roughing.

Tuesday, February 06, 2024, 13:27: TP1B on.

Tuesday, February 06, 2024, 13:33: TP1A on.

Tuesday, February 06, 2024, 13:47: IG1 on.

Wednesday, February 07, 2024, 06:54: Vacuum @ 7.55e-07T.

Wednesday, February 07, 2024, 06:56: PS on. FS#5 open. Vacuum stable.

Wednesday, February 07, 2024, 06:58: Coil jumped from 0A with the breaker off to 200 A w/ 4.2 V.

Wednesday, February 07, 2024, 06:59: Coil PS switched on. Increase coil current to 75 A & back down again. No change. Will need to trouble shoot this once this target is complete.

Wednesday, February 07, 2024, 07:04: Auto-ramping TGHT / TBHT to 350 / 200 A @ 2 A per min. Good vac / bad vac settings set back to 5.00e-06T / 7.00e-06T. Note: The TS will trip at 1.00e-05T.

Wednesday, February 07, 2024, 07:09: FC0 still acting up. Optics on.

Wednesday, February 07, 2024, 10:28:  Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min. 

Wednesday, February 07, 2024, 12:10: IV4 open.

Wednesday, February 07, 2024, 12:14: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Wednesday, February 07, 2024, 12:15 : Opening & Closing FC0 for a measurment does not interfere with IV4.

Wednesday, February 07, 2024, 12:42: One audible spark. Knocked out TMS : Q2/Q5. Reset.

Wednesday, February 07, 2024, 13:34: Mass & Wire scans complete with 2 tunes. Ok.

Thursday, February 08, 2024, 09:02: Auto-cooling @ 2A per min.

Coil PS removed. (See elog 995)

Friday, February 16, 2024, 04:57: IV4 closed

Friday, February 16, 2024, 04:58: IG1 & TP off.

Friday, February 16, 2024, 10:30: Roughing

Friday, February 16, 2024, 17:38: TP1B on. 

Friday, February 16, 2024, 17:47: TP1A on. 

Friday, February 16, 2024, 17:55: IG1 on. New Coil PS was installed.

Tuesday, February 20, 2024, 07:51: Waterline FS#5 open.

Tuesday, February 20, 2024, 07:58: Cage closed. PS on.

Tuesday, February 20, 2024, 08:01: Check. TGHT / TBHT manually to 5 / 5 A. Coil & Anode not responding.

Tuesday, February 20, 2024, 09:40: Pressure gauge reconnected within cage. Gas lines purged, refilled with argon. SV5 closed.

Tuesday, February 20, 2024, 09:48: System check 2: TGHT / TBHT manually to 5 / 5 A. BIAS / EE / EZL to 1 / -0.5 / 1 kV. Anode to 50 V.

Coil set to 15 A, did not adjust.

Tuesday, February 20, 2024, 12:04: Coil PS SW1-7 switch in was in an "Off" position & wouldn't allow the voltage signal through to the PS. Switched to "on". Coil tapped to 7 A manually & back to 0 A ok.

Tuesday, February 20, 2024, 12:24: SV4 open. SV5 is closed. Cage is closed.

Tuesday, February 20, 2024, 12:26: All power & sources on.

Tuesday, February 20, 2024, 12:29: Optics on & set w/ updated tune.

Tuesday, February 20, 2024, 12:56: PS off to switch to Cathode BIAS mode.

Tuesday, February 20, 2024, 14:20: TS to wired to Cathode BIAS mode as per ISK4563D. Cage closed up. PS on.

Tuesday, February 20, 2024, 14:52: Anode/Cathode short. PS off & remove the cage again.

Tuesday, February 20, 2024, 15:20: IG1 off. Chamber TP off.

Wednesday, February 21, 2024, 07:30: Venting.

Wednesday, February 21, 2024, 08:32: Short found on waterlines (E) to (D)

Wednesday, February 21, 2024, 08:34: IG1 Bypass in effect.

Wednesday, February 21, 2024, 08:37: BIAS / EE / EZL to 1 / -0.5 / 0.5 kV. Note* If voltage is put on the EE before the BIAS, a small amount of voltage also goes to the BIAS. To keep an eye on. Back to 0 V.

Wednesday, February 21, 2024, 08:40: Coil to 5 A, Anode to 50 V. OK. Back to 0 A / V

Wednesday, February 21, 2024, 08:41: TGHT / TBHT both to 5 / 5 A ok. Back to 0 A. All checks ok.

Wednesday, February 21, 2024, 08:42: IG1 Bypass removed.

Wednesday, February 21, 2024, 09:14: TP1B on.

Wednesday, February 21, 2024, 09:22: TP1A on.

Wednesday, February 21, 2024, 09:31: IG1 on.

Wednesday, February 21, 2024, 14:00: HV & Coil checks. OK. IV4 open.

Thursday, February 22, 2024, 08:17: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Thursday, February 22, 2024, 08:23: BIAS / EE / EZL @ 40 / -2.0 / 17 kV.

Thursday, February 22, 2024, 08:26:  BIAS / EE / EZL @ 45 / -2.0 / 19 kV. 2 large sparks on the tap up.

Thursday, February 22, 2024, 08:42: BIAS / EE / EZL @ 47.5 / -2.0 / 22 kV. Small sparks on the tap up

Thursday, February 22, 2024, 09:00: BIAS / EE / EZL @ 50 / -2.0 / 25 kV. Sparks on the tap up.

Thursday, February 22, 2024, 09:10: One spark. Reset steering & optics.

Thursday, February 22, 2024, 09:17: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Thursday, February 22, 2024, 09:39: Coil @ 80 A. Tapped up manually at 4 A per min approx. Vacuum @ 5.13e-07.

Thursday, February 22, 2024, 12:06: Coil @ 0 A

Thursday, February 22, 2024, 12:10: Anode @ 100 V.

Thursday, February 22, 2024, 12:12: Anode @ 200 V.

Thursday, February 22, 2024, 12:16: Anode @ 500 V.

Thursday, February 22, 2024, 12:26: Anode @ 0 V.

Thursday, February 22, 2024, 12:38: BIAS / EE / EL @ 0 kV.

Thursday, February 22, 2024, 12:58: Auto-ramping TGHT / TBHT to 350 / 200 A @ 2 A per min. 

Thursday, February 22, 2024, 16:25: Vacuum @ 1.16e-06T. Auto-ramping TGHT / TBHT to 580 / 290 A @ 2 A per min. 

Thursday, February 22, 2024, 18:35: TGHT / TBHT @ 580 / 290 A. 

Thursday, February 22, 2024, 18:45: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. FC0 @ 100nA = 7.71e-09 

Thursday, February 22, 2024, 18:48: Anode @ 100 V. Coil to 10 A. FC0 @ 100nA = 6.82e-09 

Thursday, February 22, 2024, 19:00: FC0 is stuck!!!. However it is not releasing HPA? Confirmed by the MCR over MS teams video chat. IV4 Closed. (Angry tech noises)

Thursday, February 22, 2024, 19:02: BIAS/ EE / EZL @ 0 KV. Anode & Coil to 0. 

Thursday, February 22, 2024, 19:07: Auto-cooling @ 2 A per minute. 

Thursday, February 22, 2024, 19:08: Closed SV4 & SV5. 

Friday, March 08, 2024, 06:59: Issues with FC0 & RP2 resolved. Soft start on TP6 initiated.

Friday, March 08, 2024, 07:06: Gas lines filled with Argon.

Friday, March 08, 2024, 07:08: Auto-ramping TGHT / TBHT @ 2 A per min to 350 / 200 A

Friday, March 08, 2024, 07:32: TBHT @ 41 A. TGHT @ 0 A?

Friday, March 08, 2024, 07:35: TGHT PS was physically off (Why???). Turned on. Manually tapped up to 25 A. Ok. Auto-ramping TGHT / TBHT @ 2 A per min to 350 / 200 A.

Friday, March 08, 2024, 08:05: TP6 tripped. Half way spun up. Soft start restarted.

Friday, March 08, 2024, 08:47: TP6 at speed. TP2 on.

Friday, March 08, 2024, 08:52: IG6 on.

Friday, March 08, 2024, 09:05: Optics on. Quick checks on BIAS / EE / EZL, Cathode (Anode), & Coil OK. 

Friday, March 08, 2024, 09:33: IV4 open. 

Friday, March 08, 2024, 10:18: Vacuum @ 2.43e-07T. Halted auto-ramping. Increase. Auto-ramping TGHT / TBHT @ 2 A per min to 580 / 290 A.

Friday, March 08, 2024, 13:35: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. 

Friday, March 08, 2024, 15:59: Mass & wire scans complete. Appear the anode PS is likely positive. Auto-cooling @ 2 A per min.  

Friday, March 08, 2024, 16:04: HV off. Gases closed. 

Monday, March 11, 2024, 23:09: Auto-ramping TGHT / TBHT to 580 / 290 A @ 1 A per min. 

Tuesday, March 12, 2024, 09:45: Gas on.

Tuesday, March 12, 2024, 09:51: BIAS / EE / EZL @ 30 / -1.5 / 13

Tuesday, March 12, 2024, 10:36: Anode @ 100 V. Coil @ 20 A.

Tuesday, March 12, 2024, 11:19: Mass & Wire scans complete.

Tuesday, March 12, 2024, 13:51: EE at -2.5. mass scan

 Tuesday, March 12, 2024, 13:55: EE at -1.5. Coil at 0A. mass scan

Tuesday, March 12, 2024, 14:11: Coil at 20A, TSH:ANODE at  0V. mass scan 

Tuesday, March 12, 2024, 14:30: coil and anode on. gas turned off. 

Tuesday, March 12, 2024, 16:59: decreasing bias 

Tuesday, March 12, 2024, 17:07 decreasing TBHT TGHT to 0, 1A/s 

Friday, January 22, 2016, 15:30: Turbos started

Friday, January 22, 2016, 16:14: RGA ON

Monday, January 25, 2016, 10:30: Opened water. No response on vacuum.

BIAS / EZL / EE to  30 / 15 / 1.5 kV

Started auto-ramping to 300 / 200 A at 2 A/min.

Monday, January 25, 2016, 15:34: Aborted auto-ramping and stepped down to 180 A on TGHT / TBHT to conserve salts. Vacuum at 1.2 E-6 T

Tuesday, January 26, 2016, 08:30: Continue auto-ramping.

Tuesday, January 26, 2016, 09:15: Tuning by Alex

Wednesday, January 27, 2016, 08:24: Increased good/bad vacuum to 4/6 E-6T

Wednesday, January 27, 2016, 08:58: Continue ramping to TGHt 400 A

Thursday, January 28, 2016, 13:28: Continue ramping to TGHT / TBHT 420 / 220 A

Monday, February 01, 2016, 08:31: Ramp down started

Monday, February 01, 2016, 10:40: Isolation valve closed

Monday, February 01, 2016, 10:42: RGA off.

Tuesday, February 23, 2016, 09:07 Monday, February 01, 2016, 16:35: BIAS / EZL / EE off. Stopped turbos.

Tuesday, February 02, 2016, 09:28: Venting through turbo pump (air).

Wednesday, February 03, 2016, 08:35: Roughing

Wednesday, February 03, 2016, 09:06: Starting TP1B only.

Wednesday, February 03, 2016, 09:17: Force on TSG:IG1 for high vacuum test

Wednesday, February 03, 2016, 09:27 : EE current limiting around 1500 V with IG1 at 4E-5 T. EE can no longer hold more than some hundred volts before current limiting.

Wednesday, February 03, 2016, 10:01: Stopped turbo. Will vent and inspect insulator.

Wednesday, February 03, 2016, 10:06: Force removed from IG1.

Wednesday, February 03, 2016, 12:11: Venting

TEST 2

Cleaned PE and EE with acetone.

Friday, February 05, 2016, 15:05: Roughing

Friday, February 05, 2016, 15:48: Turbos started.

Friday, February 05, 2016, 15:56 : Turbos at speed. Vacuum at  3.7E-5 T

Tuesday, February 09, 2016, 08:55: Opened water to HS circuit. Vacuum stable at 6.2E-7 T. No response on RGA

Tuesday, February 09, 2016, 08:59: Started auto-ramping heaters.

Tuesday, February 09, 2016, 09:12: Opened IV4

Wednesday, February 10, 2016, 14:15: Increased voltage limit on TB HT

EE voltage limited over the weekend on Feb 14th. See attached.

Observed EE opening with telescope. Could not see any material buildup. Nice round shape visible.

Monday, February 15, 2016, 11:55: Starting ramp down of heaters.

Tuesday, February 16, 2016, 08:32: BIAS/EZL/EE off. Stopped turbos.

Tuesday, February 16, 2016, 08:37: RGA off.

Tuesday, February 23, 2016, 09:08: Venting