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.

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.

Anders Mjos wrote:

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.

 EL was brought to 27.5kV.

Conditioning continues today with resistors removed from the HV cable

Tuesday, July 18, 2017, 16:53: BIAS / EZL 50 / 25 kV - no sparks

 Tuesday, July 18, 2017, 16:56: BIAS / EZL 55 / 27.5 kV - one spark

TM3 remained at 55 kV over night. Turbo pumps tripped twice and was restarted and HV recovered by RIB ops. Last recovery brought EZL to 16 kV (not 27.5 kV)

About 25 sparks over 15 h. No sparks for the last 3 h

Wednesday, July 19, 2017, 08:12: EZL to 27.5 kV

Wednesday, July 19, 2017, 08:38: BIAS to 57 kV

Wednesday, July 19, 2017, 08:46: BIAS to 57.5 kV

Wednesday, July 19, 2017, 09:05: BIAS to 59 kV

Wednesday, July 19, 2017, 09:19: BIAS to 60 kV

Wednesday, July 19, 2017, 09:28: EZL to 30 kV

Wednesday, July 19, 2017, 12:25: Heavy sparking. Lowered BIAS to 30 kV

Wednesday, July 19, 2017, 12:37: Increased BIAS again towards 50 kV, but heavy sparking again between 45 and 50 kV. Lowered back to 30 kV

Wednesday, July 19, 2017, 12:40: BIAS at 46 kV

Wednesday, July 19, 2017, 12:42: BIAS at 47 kV

Wednesday, July 19, 2017, 12:44: BIAS at 48 kV

Wednesday, July 19, 2017, 12:48: BIAS at 50 kV

Wednesday, July 19, 2017, 14:50: BIAS at 55 kV after ~2h without sparking at 50 kV

Wednesday, July 19, 2017, 15:12: Sparking. Lowered to 40 kV

Wednesday, July 19, 2017, 16:39: BIAS at 55 kV

Friday, July 21, 2017

Observed top of module inside target hall during HV sparks using crane cameras. No sparks observed, but some faint sound could be heard. Module still sparks at 60 and 55 kV. Have to lower to 40 kV to stop sparking.

Friday, July 21, 2017, 13:25: BIAS / EZL at 50 / 25 kV for without sparking for the last 90 min

BIAS and EZL connected. No water flowing into the module (water looped on top of module)

Friday, March 01, 2019, 08:20: 10kV

Friday, March 01, 2019, 08:40: 20kV

Friday, March 01, 2019, 08:57: 30kV

Friday, March 01, 2019, 11:00: 40kV

Friday, March 01, 2019, 15:23: 50kV

Monday, March 04, 2019, 08:50: 50kV

Monday, March 04, 2019, 09:22: 52.5kV

Monday, March 04, 2019, 10:01: Spark tripped TPs at 54kV

Monday, March 04, 2019, 10:04: 50kV

Monday, March 04, 2019, 10:14: Multiple sparks at 54kV. Lowered to 30kV to stop.

Monday, March 04, 2019, 10:15: 40kV

Monday, March 04, 2019, 10:16: Sparking at 42kV. Lowered to 40kV

Monday, March 04, 2019, 10:19: 42kV

Monday, March 04, 2019, 10:48: 50kV

Monday, March 04, 2019, 11:11: 52.5kV

Monday, March 04, 2019, 11:25: 54kV

Monday, March 04, 2019, 11:50: 55kV

Monday, March 04, 2019, 13:33: 3 sparks observed for the last 1.5h

Removed HV cover to avoid sparking between F/T and cover.

Monday, March 04, 2019, 14:02:20kV

Monday, March 04, 2019, 14:06: 50kV

 Monday, March 04, 2019, 14:12: 55kV

Monday, March 04, 2019, 14:20: Multiple sparks at 56kV. Lowered to 30kV to stop.

Monday, March 04, 2019, 14:27: 40kV

Monday, March 04, 2019, 14:29: 50kV

Monday, March 04, 2019, 14:32: 55kV

Monday, March 04, 2019, 14:40: 56kV

Monday, March 04, 2019, 14:55: Multiple sparks at 57kV. Lowered to 30kV to stop

Monday, March 04, 2019, 15:01: 55kV

Monday, March 04, 2019, 15:36: 57kV

Monday, March 04, 2019, 15:51: 57.5kV

Monday, March 04, 2019, 16:30: ~1 spark in 0.5h, somewhat unstable current (see attached Word file)

Monday, March 04, 2019, 16:30: HV off

TGHT, TBHT, ANODE and COIL power tested (some amps/volts)

Monday, August 17, 2015, 10:43: BIAS/EL/EE to 15/7.5/1.5 kV

Monday, August 17, 2015, 10:45 : COIL 20A, ANODE 200V

Keiko fixed the auto-ramping program and access rights to it.

Monday, August 17, 2015, 13:06: Auto-ramping at 2/1 A/min. Good/bad vacuum at 6E-6 and 8E-6 T

Monday, August 17, 2015, 13:24 : ANODE current limit set incorrectly. Corrected and 200V (9 mA)

Monday, August 17, 2015, 15:28: COIL to 50 A

Monday, August 17, 2015, 15:43: Reduced ANODE to 100 V

Monday, August 17, 2015, 16:56 : Increased EL to 8.3 kV to increase FC current.

Monday, August 17, 2015, 17:04 : FC0 current at 1.5E-8 A

Beam ionized and accelerated on the new TM2 source tray

Monday, August 17, 2015, 17:12 : TGHT / TBHT at 500 / 250 A. Will leave over night to outgas. ISAC ops are monitoring the source.

Tuesday, August 18, 2015, 08:07: Everything stable overnight. Continue ramping heaters.

Tuesday, August 18, 2015, 08:48: TBHT voltage limited by EPICS (hardcoded) at 273 A.

TGHT/TBHT at 600 / 273 A 

Tuesday, August 18, 2015, 09:52: Adjusted COIL current down to 0 and back up. Response seen on FC0.

Tuesday, August 18, 2015, 22:29 : Starting cool down.

 Wednesday, August 19, 2015, 08:26: Source and HV off. EE configured to conditioning mode. RGA off.

Wednesday, August 19, 2015, 08:42: BIAS/EL at 15 / 7.5 kV. PNG1 at 3.5E-6 T, IG1 at 3.9E-7 T

Wednesday, August 19, 2015, 08:53: BIAS/EL 20 / 10 kV. 2 sparks.

Wednesday, August 19, 2015, 09:54: BIAS/EL 30 / 15 kV. Some sparking around 28 kV required BIAS voltage to be reduced momentarily. 

Wednesday, August 19, 2015, 10:04: Sparking at 30 kV. Reduced BIAS to 13 kV to get spar rate to less than 10/min

Wednesday, August 19, 2015, 10:19 : BIAS current limiting. Switch off BIAS and EL

Wednesday, August 19, 2015, 12:04: Water off for purging and leak test.

Wednesday, August 19, 2015, 12:52: Vacuum response observed while David was working on purging the water lines. This turned out to be when the valve to the leak detector was opened.

Conditioning by ISAC operations

Saturday, September 24, 2016, 11:15: RGA on for heater conditioning. (kept off during HV conditioning)

Sunday, September 25, 2016, 07:44: TGHT and TBHT voltage jumps during heater ramping. Likely contact between target and heat shield. Contacted ISAC operations and asked to abort ramping at current values. TGHT/TBHT 500 /270 A

Monday, September 26, 2016, 08:22: ISAC operations resuming ramping to 550 A. Corrected TGHT voltage at ISAC TS was ~6.2 V at 580 A. Expected voltage at TCS would then be 6.2 + (3.4+2.9)E-3*580 = 9.9 V. Limit set at 9.5 V.

Monday, September 26, 2016, 09:09: Increased TGHT voltage limit to 9.6 V to allow it to reach 550 A.

Monday, September 26, 2016, 10:17: Voltage limit increased to 10.2 V which allowed the current to go to 575 A

Tuesday, September 27, 2016, 08:08: Conditioning complete. Ran at 575 / 270 A and 47 kV for about 1 hour. Conditioned cold to 49 kV.

 Wednesday, July 06, 2016, 15:23: RGA on. IGs on

Friday, July 08, 2016, 17:07: Stopped cooling system due to a problem with the chiller. Will continue with HV conditioning on Monday.

Monday, July 11, 2016, 08:08: Cooling system started. Operating CP1 manually to control temperature

Monday, July 11, 2016, 09:38: BIAS / EL / EE to 10 / 5 / 1 kV

Monday, July 11, 2016, 09:41: BIAS / EL / EE to 20 / 10 / 1.5 kV

Monday, July 11, 2016, 09:47: BIAS / EL / EE to 30 / 15 / 1.5 kV

Monday, July 11, 2016, 10:01: BIAS / EL / EE to 40 / 20 / 2.0 kV - one spark at 40 kV

Monday, July 11, 2016, 10:38: BIAS / EL / EE to 45 / 22.5 / 2.0 kV - conditioning from 40 kV

Monday, July 11, 2016, 10:40: BIAS / EL / EE to 45 / 22.5 / 2.3 kV

Monday, July 11, 2016, 12:21 : No sparks for the last 60 min.

Monday, July 11, 2016, 12:21: BIAS / EL / EE off to investigate TGHT / TBHT PS problem (power surge this morning)

Monday, July 11, 2016, 13:07: Power cycled TGHT / TBHT PS. Alarm cleared. Tested both to 10 A

PNG1 connected to PNG in service cap (as per David W)

 Wednesday, June 03, 2015, 12:59: Water on

Wednesday, June 03, 2015, 13:04: Staging enabled.

Wednesday, June 03, 2015, 14:02: Auto-ramping to 580 and 200 A at 2 and 1 A/min.

Wednesday, June 03, 2015, 14:03 : BIAS/EL/EE to 20/10/1.5 kV

ISAC operations monitored TCS from Wednesday to Monday

Monday, June 08, 2015, 08:55 : Started cool-down of target

Monday, June 08, 2015, 09:19: BIAS/EL/EE off

Monday, June 08, 2015, 09:32: EE configured to conditioning mode

Monday, June 08, 2015, 10:12 : TGHT and TBHT off

Monday, June 08, 2015, 10:25: BIAS/EL to 20/10 kV

Monday, June 08, 2015, 10:32: BIAS/EL to 30/15 kV

Monday, June 08, 2015, 10:45: BIAS/EL to 40/20 kV. Some bias sparking from ~39 kV

Monday, June 08, 2015, 13:40: BIAS/EL to 47.5/20 kV

Monday, June 08, 2015, 14:35: BIAS/EL to 50/20 kV

Monday, June 08, 2015, 14:39: BIAS/EL to 50/25 kV

Monday, June 08, 2015, 16:54: BIAS/EL to 53/25 kV

Monday, June 08, 2015, 17:03: BIAS/EL/EE off

Tuesday, June 09, 2015, 08:02: BIAS/EL to 30/15 kV

Tuesday, June 09, 2015, 08:07: BIAS/EL to 40/20 kV.

Tuesday, June 09, 2015, 08:13: BIAS/EL to 50/25 kV

Tuesday, June 09, 2015, 08:27: BIAS/EL to 53/25 kV 

Tuesday, June 09, 2015, 08:57: BIAS/EL to 55/25 kV  

Tuesday, June 09, 2015, 09:31: Power supplies tripped on IG2 vacuum after a spark at ~57.5 kV

Tuesday, June 09, 2015, 09:40: BIAS/EL to 40/20 kV.

Tuesday, June 09, 2015, 10:00 : BIAS/EL to 55/25 kV  

Tuesday, June 09, 2015, 10:09: BIAS/EL to 57.5/25 kV

Tuesday, June 09, 2015, 10:22: Sparking activity at 58 kV. Tripped TP2 and BV2. Reduced to 50 kV. Leakage current increased.

Tuesday, June 09, 2015, 10:33: Sparking activity at 55 kV. Reduce to 45 kV. Increased BIAS current limit from 0.25 to 0.30 mA

Tuesday, June 09, 2015, 10:41: BIAS/EL to 50/25 kV. BIAS RDCUR 0.17 mA, was 0.08 mA at 8:13 this morning.

Tuesday, June 09, 2015, 11:28 : Restarted TP2. Tripped.

Tuesday, June 09, 2015, 11:50:  Increased BIAS current limit from 0.30 to 0.35 mA

Tuesday, June 09, 2015, 11:55 : BIAS/EL to 54.5/25 kV for 5 min, 0.12 mA . Reducing to 40 kV for lunch break.

Tuesday, June 09, 2015, 13:07: BIAS/EL to 50/25 kV 

Tuesday, June 09, 2015, 13:27: BIAS/EL to 55/25 kV 

Tuesday, June 09, 2015, 13:40: BIAS/EL to 57/25 kV 

Tuesday, June 09, 2015, 13:49: BIAS/EL to 57.5/25 kV. Increased BIAS current limit from 0.35 to 0.40 mA

Tuesday, June 09, 2015, 14:30: IG1 tripped after spark. Controller seems to be broken. Forced IG1. Fault report submitted June 10th.

Tuesday, June 09, 2015, 14:58: BIAS/EL to 45/25 kV

Tuesday, June 09, 2015, 15:46: BIAS/EL to 55/25 kV

Tuesday, June 09, 2015, 15:55: BIAS/EL to 56/25 kV

Tuesday, June 09, 2015, 17:30: BIAS/EL to 57/25 kV 

Tuesday, June 09, 2015, 17:46: BIAS/EL to 57.5/25 kV 

Tuesday, June 09, 2015, 18:00: BIAS/EL to 58/25 kV

Tuesday, June 09, 2015, 18:30: No sparks for 30 min

Tuesday, June 09, 2015, 18:55: One spark observed. BIAS/EL off.

Tuesday, June 09, 2015, 18:56: Turbos stopped. Stopped water circuit.

Thursday, June 11, 2015: IG1 seems to work again after a power cycle. Controller tested with another IG. Closing Fault report

 Wednesday, November 25, 2015, 15:36: RGA on

Thursday, November 26, 2015, 09:55: PS energized. EE connected to power supply.

Thursday, November 26, 2015, 11:41: Applied some current and voltage to all power supplies. All looks good.

Some sparking around 5 kV. Turned out to be a bad cable connection. Fixed with David W.

Thursday, November 26, 2015, 15:04: BIAS/EL/EE 20 / 15 1.5 kV

Thursday, November 26, 2015, 15:43: Handed TCS over to ISAC operations

 Target heated over the weekend. EE went into current limiting (down to ~100 V) a while after the target was at temperature.

Monday, November 30, 2015

Target conditioned by ISAC operators to 30 kV without any problems.

EE current limit increased to about 26 mA in an attempt to recover. Cooling down target to investigate.

Wednesday, August 24, 2016, 14:42: RGA on

Wednesday, August 24, 2016, 20:27: IG2 and IG1S on. Checked on water system.

Conditioning by ISAC operations. Water flow tripped power supplies after a few hours of conditioning at 580 / 230 A and 30 kV. See operations e-log for details.

Thursday, November 07, 2019, 10:35: Tested source to 30 A on TGHT, TBHT and COIL. ANODE at 100 V.

Tuesday, November 12, 2019

The FEBIAD source worked well over the weekend. The anode current limit was adjusted twice to stop voltage limiting. About 5E-8 A on the FC with TGHT=580A, TBHT=300A, ANODE=200V,150 mA, COIL=50A. Bias was conditioned to 30 kV

 Once again the 7.5 compressors are tripping due to faults. I believe it is due to over pressure as a result of the chiller fans not coming on. I have contacted ESC.

Residual fields from the remaining compressible waste were still too high (as far as I'm concerned) so I have unpacked all compressible waste looking for a "hot" item that has snuck into these items.

I have a hand full of small bolts (possible target components), a hand full of target material/dust (including an entire target disc), and some cloths that had clearly been used to wipe the table (they are black with target dust).

These items will be disposed of with the next spent target.

 After extensive troubleshooting the communication fiber was found to be damaged and has been replaced by Gelo.

After few hickups the TCS was successfuly commissioned.

In the morning, in the middle of the heaters conditioning: 360A/250A for the TGHT/TBHT, the target heater PS tripped and it didn't recover immediately.  I cannot tell if the card is still OK. Before this even, there were few bias current sparks created when the ionized tube was raised above 250A; this also tripped the Einzel lens. Re-started the Heaters, and did the conditioning with the rest (HV, Optics) Off. After the heaters were at nominal values, raised the rest: HV to 30kV and the Optics. And everything held fine. The current on the FC was 3micro-Amperes. The water temperature levels stayed below 25 deg Celsius.

The problems that need to be fixed:

1. The biggest problem was created by the target power supply: the new card is not calibrated, the voltage is not regulating, but the main problem is the grounding of the output of power supply. Friedhelm measured 0.2V across the return and the cage (200mili-ohms resistance) .  This was probably overlooked.

2. The Auto-ramping routine didn't work. Controls would need to fix this.

3. The RGA didn't want to connect from the account Don created for me. So, we have only a RGA scan taken on Friday by Don, when the target was cold.

Aurelia Laxdal wrote:

After few hickups the TCS was successfuly commissioned. In the morning, in the middle of the heaters conditioning: 360A/250A for the TGHT/TBHT, the target heater PS tripped and it didn't recover immediately.  I cannot tell if the card is still OK. Before this even, there were few bias current sparks created when the ionized tube was raised above 250A; this also tripped the Einzel lens. Re-started the Heaters, and did the conditioning with the rest (HV, Optics) Off. After the heaters were at nominal values, raised the rest: HV to 30kV and the Optics. And everything held fine. The current on the FC was 3micro-Amperes. The water temperature levels stayed below 25 deg Celsius. The problems that need to be fixed: 1. The biggest problem was created by the target power supply: the new card is not calibrated, the voltage is not regulating, but the main problem is the grounding of the output of power supply. Friedhelm measured 0.2V across the return and the cage (200mili-ohms resistance) .  This was probably overlooked. 2. The Auto-ramping routine didn't work. Controls would need to fix this. 3. The RGA didn't want to connect from the account Don created for me. So, we have only a RGA scan taken on Friday by Don, when the target was cold.

 Response to item 1. 

This morning I investigated the output of the TGHT power supply. The negative output of the power supply is tied to common as per ISK4574D Rev 7 (attached) and the released drawing IRH1511 Rev A (PDF attached but officially located in the SW vault). If this is not the intent of the IRH1511 should be released to Rev C reflecting the desired configuration. 

 In regards to the calibration of the card I will inform the PS group. 

Today, the commissioning of the TCS went well. The water/vacuum interlocks were checked OK. Then, the TCS was HV conditioned up to 33kV.

Tomorrow, the heaters will be ramped up.

coil line has been removed from the hot cell. Initial decon was performed...after it still appears to have approximately 200 counts. It will now be transfered to the rad waste decon facility for further decon.

David and I checked circuits p and q (the water cooled coil ciruit) for flow this morning as, with the source tray still in the module, there was both a leak and a leak tight blockage. Both p and q allowed air flow through them confirming that the blockage was in the surce tray side of the system.

The heat shield circuit was also tested for flow and it passed.