 Wednesday, May 03, 2023, 13:22, David Wang, ITE, Standard Operation, , , Argon vented ITE station.
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| Argon vented ITE station. ITEVV1S and ITGT SV3 were closed after venting. |
Wednesday, May 10, 2023, 08:40, Frank Song, ITE, Standard Operation, TM4, TiC#5, Module Connection 
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| TM4 was connected in ITE. pics attached FYI. |
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Monday, May 22, 2023, 15:06, Carla Babcock, ITE, Standard Operation, TM4, TiC#5, Module conditioning
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Yesterday and today module conditioning was done on Tm4 in ITE. This is the first ramp up after the shutdown and ITE is planned to run at high voltages
for the first weeks. The module is behaving well - went up to 40kV yesterday, stayed there for an hour, and up to 46kV today. Current draw is 113uA at
46kV. No serious sparking. |
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Wednesday, May 24, 2023, 17:25, Carla Babcock, ITE, Repair, TM4, TiC#5, Issues with anode short
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When I tried to raise the anode voltage in cathode bias mode on May 23 evening, I found the target or tube shorted to HV common. Investigations in the
faraday cage today showed the same. I removed all the new electronics (resistors, gemovs, etc) from the power supply to no effect, so I disconnected the
TGHT supply and pushed it away from the busbars. There was still a short. David Frank and I then went down to the pit and disconnected everything to measure |
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Tuesday, May 30, 2023, 12:23, Frank Song, ITE, Standard Operation, TM4, TiC#5, gas lines pump out in ITE Faraday Cage
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| argon is being supplied at 6 psi to TM4. |
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Tuesday, June 13, 2023, 09:55, Frank Song, ITE, Standard Operation, TM4, TiC#5, module disconnection
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| TM4 with TiC#5 was disconnected in ITE and moved to NHC. |
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Wednesday, June 14, 2023, 07:10, Frank Song, ITE, Standard Operation, TM4, SiC#45, TM4 with SiC#45 connection in ITE
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| TM4 with new target SiC#45 was connected in ITE, all TPs are running at their full speed. |
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Wednesday, June 14, 2023, 13:37, David Wang, ITE, Standard Operation, TM4, , ITE water signal interlock check
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ITE water signal interlock check including HS,EE, TA, TU, MSP. Coil1 , C-window ,2a-window, 2A tank, 2A shielding plug , 2A dump, 2A collimator
are done. All things work. |
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Wednesday, July 19, 2023, 08:04, Frank Song, ITE, Standard Operation, TM4, UCx#42, Module Connection
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| TM4 with new target UCx#42 was connected in ITE. |
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Tuesday, August 29, 2023, 09:33, Frank Song, ITE, Standard Operation, TM4, UCx#42, module disconnection
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| TM4 with spent target UCx#42 was disconnected in ITE and has been remote moved to NHC this morning. |
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Wednesday, September 06, 2023, 08:07, Frank Song, ITE, Standard Operation, TM4, Ta#65, Module Connection
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| TM4 was connected in ITE with new target Ta#65 installed. see attachment in detail. |
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Tuesday, November 07, 2023, 13:55, Frank Song, ITE, Standard Operation, TM4, Ta#65, module disconnection
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| TM4 with spent target Ta#65 was disconnected in ITE and moved to SHC. |
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Wednesday, November 29, 2023, 12:45, Carla Babcock, ITE, Standard Operation, , , gas lines pumped down
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Pumped down the gas lines in ITE on Tuesday Nov. 28 2023 and opened the CF4 bottle valves. Missed the small section between the regulator and SV2 though,
so will probably redo it.
Pumped down again on Dec. 12 2023. Was taking a long time so might not be as good as earlier. Maybe there is a leak in there... |
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Thursday, December 21, 2023, 09:37, Ferran Boix Pamies, ITE, Development, , , Rewiring of TC multiping wires
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Thursday, December 21, 2023, 09:36. ITE multipin wires 12-13-14-15 were rewired from the RF driver box to a TC datalogger inside the HV cage. A
webcam was also installed to monitor the TC values during operation. This is only a temporary setup to be upgraded during shutdown. |
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Wednesday, January 10, 2024, 16:51, Carla Babcock, ITE, Standard Operation, TM4, UCx#43, UCx#43 failure
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To deliver stable beam to RadMol, started heating UCx#43 up again. Target was overheated during initial conditioning in Nov but then ran well for
4 weeks. During the run time, the TGHT voltage jumped around and this was reflected in the ion current, but yields seemed unaffected.
When re-heating it, the TGHT voltage was very unstable and once it got to 440A, it went into voltage limiting mode. We ramped down and it was still |
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Monday, January 22, 2024, 10:16, David Wang, ITE, Standard Operation, TM4, UCx#, Tm4 waterlines helium pressure test and TM service cap helium leak check.
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Tm4 waterlines helium pressure test and TM service cap helium leak check was done last Friday. All water lines were pressurized with 70psi helium for
3 minutes each. The 3 minutes stable leak rate on all lines are less than 4.0 X E-9atm.cc/sec. some of lines had surging leak rate to 2xE-8 atm.cc/sec
at the first 10 seconds of pressurization which should be a gas hammer result at the beginning. Based on the numbers, I would say all water lines are leak |
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Monday, January 22, 2024, 14:12, Frank Song, ITE, Standard Operation, TM4, UCx#43, module disconnection
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| TM4 with spent target UCx#43 was disconnected in ITE and is ready moved to SHC. see attachment pls. |
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Friday, February 02, 2024, 07:48, David Wang, ITE, Standard Operation, TM4, , ITE primary and secondary vacuum vessel leak check.
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ITE primary and secondary vacuum vessel leak check has been done. SST bellow for 2A3M19 wire scanner on entrance module top has a big leak to E-5
atm.cc/sec on tiny helium spray. The bellow will be replaced in March by probe group. The LD base leak rate is affected by this big leak so i cant keep
the LD scale at 0.0Xe-9 atm.cc/sec during the leak check. Other seal are leak free to 8XE-9 atm.cc/sec. I have no big concern on ITE vacuum seals status |
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Thursday, February 15, 2024, 17:40, Carla Babcock, ITE, Standard Operation, , , ITE annual HV testing
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ITE was set up for HV tests - this time the module plug was not in so the BIAS and EE had to be bypassed. NOTE: ITE:BIASPLC must also be bypassed for
this to work. Currently it is located on the vacuum bypasses page, but may be changed to the optics page soon.
ITE was ramped to 60kV in steps of 1kV easily. It sat at 60 for about 1.5 hours with a current draw around 173uA. It was not entirely stable though, |
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Friday, February 23, 2024, 06:36, David Wang, ITE, Maintenance, , , ITE entrance module has been disconnected.
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| ITE entrance module has been disconnected per document 190510. Its a preparation job for next month module moving out to SHC. |
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