 Wednesday, August 02, 2017, 15:09, David Wang, ITW, Standard Operation, TM2, , TM2 was disconnencted in ITW yesterday.
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Tm2 was disconnected in ITW yesterday. ITW EL cable crimp ring was broken. John Chow replaced this ring this afternoon. |
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Wednesday, August 02, 2017, 15:13, David Wang, South Hot-Cell, Standard Operation, TM2, , SHC, TM2 leak check on HS line.
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HS line is leak checked at SHC this afternoon by helium spay. Leak detector base LR 0.0 XE-9atm.cc/sec. Base pressure 0.0Xe-4 torr. No leak has been found. This line will be helium pressured at TCS. It had a 1.7XE-7 atm.cc/sec leak rate on 70 psi helium at TCS during last two target checks.
2017-08-03. Helium pressure test on TM2 HS line at TCS is done. 70psi helium, 3 minutes. base leak rate 0.0xE-7 atm.cc/sec. Result: 1.8XE-7atm.cc/sec leak which is almost same as before. This line has a very small leak on water block seal under helium pressure test which we knew already. |
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Thursday, August 03, 2017, 17:08, Anders Mjos, Conditioning Station, Repair, TM2, , Power bump
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Thursday, August 03, 2017, 17:08: Restarting vacuum and water system |
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Tuesday, August 08, 2017, 13:26, Travis Cave, ITW, Standard Operation, TM2, Ta#53, module moved
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TM#2 with Ta#53 has been moved from the conditioning station to the west target station. |
 Tuesday, August 15, 2017, 09:27, Anders Mjos, South Hot-Cell, Standard Operation, TM2, SiC#36, Electrical Check of target in SHC
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| Travis Cave wrote: |
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The electrical check of TM#2 with SiC#36 attached. Post beam at the south hot cell. See attached results allow the before beam electrical check results are posted here as well.
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by David and Chad after target removed from module:
Anode to target @500V - 65Kohm
Anode to HS - dead short
Target to HS@500V -62Kohm. |
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Tuesday, August 15, 2017, 09:30, Anders Mjos, ITW, Standard Operation, TM2, Ta#53, TM2 radiation fields
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| Travis Cave wrote: |
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TM#2 with Ta#53 has been moved from the conditioning station to the west target station.
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by Travis (measured at ~ 2' from module on service tray side):
at 3' 325 uSv/h
at 2' 640 uSv/h |
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Tuesday, September 19, 2017, 13:53, Travis Cave, South Hot-Cell, Standard Operation, TM2, Ta#53, Module move
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TM#2 with Ta#53 has been moved from the west target station to the south hot cell. |
Wednesday, September 20, 2017, 13:38, chad fisher, South Hot-Cell, Repair, TM2, , TM2 Insulator replacement 
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Broken insulators ITD0053 and ITD0054 have been uninstalled from TM2. |
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Thursday, September 21, 2017, 10:48, Travis Cave, South Hot-Cell, Standard Operation, TM2, Ta#53, Electrical Check
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Electrical checks of TM#2 with Ta#53 and also with out a target. |
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Thursday, September 21, 2017, 12:07, chad fisher, South Hot-Cell, Repair, TM2, , Insulator Replacement
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Insulators ITD0053 and 54 have been replaced. All fasteners torqued to 56 in lbs.
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Thursday, September 21, 2017, 16:26, Anders Mjos, South Hot-Cell, Standard Operation, TM2, , Inspection of Source Tray
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Chad and Anders inspected the Source Tray today using the camera in the hot cell. A dark spot was observed on one of the four insulators separating the Extraction Electrode from the Ground Electrode. This could potentially influence the high leakage current. Some discolored areas were also observed in the Service Tray, but these was present when the module was built. See attachment for details. |
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Friday, September 22, 2017, 11:00, Travis Cave, South Hot-Cell, Standard Operation, TM2, no target, Electrical Check
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Electrical check of TM#2 after the insulator change on thursday september 21. |
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Friday, September 22, 2017, 12:13, David Wang, South Hot-Cell, Maintenance, TM2, , TM2 service cap inside inspection.
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Two side panels on TM2 service cap were removed for TM2 service cap inside inspection. A piece of cable tie was found inside cap closing to service tray entrance area. All blue nylon insulators are inspected. They look good. The broken cable tie is moved out of service cap.
Panels are installed back after the inspection.
See attachments |
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Friday, September 22, 2017, 14:15, chad fisher, South Hot-Cell, Repair, TM2, , TM2 containment box off
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TM2 containment box has been removed. Found a piece of capton tape or tubing under table (see picture). |
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Tuesday, September 26, 2017, 14:27, Travis Cave, South Hot-Cell, Standard Operation, TM2, Ta#54, Electrical Check
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Electrical check of TM#2 with Ta#54 at the south hot cell. See attached PDF for details. |
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Wednesday, September 27, 2017, 08:00, chad fisher, South Hot-Cell, Standard Operation, TM2, Ta#54, Ta#54 installed
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Containment box has been replaced onto TM2, interior of containment box vacuumed, and Ta#54 installed with new fasteners (high current torqued to 130 in lbs). |
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Wednesday, September 27, 2017, 09:02, Travis Cave, Conditioning Station, Standard Operation, TM2, Ta#54, Module move
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TM#2 with Ta#54 has been moved from the south hot cell to the conditioning station. |
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Thursday, September 28, 2017, 10:50, David Wang, Conditioning Station, Standard Operation, TM2, , Helium pressure test on TM2 window and HS water lines at TCS.
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I did helium pressure test on TM2 containment box window and HS line at TCS. @ 70psi helium for 3 minutes, HS:2.2XE-7 atm.cc/sec., Window:1.2XE-7 atm.cc/sec. There is no change on HS. But LR on window is bigger than before that was in E -9atm.cc/sec range. |
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Thursday, September 28, 2017, 15:34, Anders Mjos, Conditioning Station, Development, TM2, , Changes to MP3 startup
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Due to problems with the regulating valve WPV1, the VFD (Variable Frequency Drive) for the pump has been programmed to do a slow (2 min) ramp up. WPV1 has been bypassed and left fully opened. Work was done by Dave Morris |
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Thursday, September 28, 2017, 17:44, Anders Mjos, Conditioning Station, Standard Operation, TM2, Ta#54, Conditioning Ta#54
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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 |
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