 Tuesday, July 19, 2011, 11:17, Travis Cave, South Hot-Cell, Standard Operation, TM4, Ta#35, Move of TM#4 from East target station to south hot cell.
|
| Move went well no problems readings at East Target Station were very high at 500mSv/hr. |
Tuesday, July 19, 2011, 11:52, chad fisher, South Hot-Cell, Standard Operation, TM4, Ta#36, New target Ta#36 Installed on TM4 
|
Ta#36 has been installed on TM4 and is awaiting leak and electrical check.
A small piece of the standard top insulator ITA3376 broke off during removal of Ta#35 (indicated with a blue circle on attached pictures).
"JP's connector, ITA2493 showed the usual and as yet undiagnosed "arc" mark (picture to follow). |
|
Tuesday, July 19, 2011, 12:02, Travis Cave, South Hot-Cell, Standard Operation, TM4, Ta#36, Electrical check
|
| See attached PDF for the details. |
|
Tuesday, July 19, 2011, 12:25, maicodallavalle, South Hot-Cell, Standard Operation, TM4, Ta36, TM4 Ta36 Target was put into the south hot cell.
|
| Ta36 was check by Maico and Chad.It was then carried into the anteroom.From the anteroom it was transferred into the south hot cell. |
|
Tuesday, July 19, 2011, 13:51, chad fisher, South Hot-Cell, Standard Operation, TM4, Ta#36, TM4 Ta#36 Leak Check Results
|
Tm4 w/ Ta#36 has been vacuum leak checked using the standard leak check procedure.
At 1:45pm RH was contacted to notify them that TM4 is ready to move. |
|
Wednesday, July 20, 2011, 09:55, Travis Cave, ITE, Standard Operation, TM4, Ta#36, Move of TM#4 from South Hot Cell to East Target Station.
|
| Move completed, move went well. |
|
Wednesday, September 28, 2011, 09:07, Travis Cave, ITE, Standard Operation, TM4, Ta#36, Move of TM#4 from East target station to south hot cell.
|
| Move of TM#4 with Ta#36 from East target station to south hot cell, move went well. |
|
Wednesday, September 28, 2011, 10:06, chad fisher, South Hot-Cell, Standard Operation, TM4, Ta#36, Ta#36 Removal
|
Ta#36 was removed from target module 4.
The standard, unexplained, un-investegated, un-resolved "arc" were again present on "JP's connector", otherwise no apparent
problems visible. |
|
Wednesday, September 28, 2011, 11:59, Travis Cave, South Hot-Cell, Standard Operation, TM4, no target, TM#4 moved from South Hot Cell to to North East Silo.
|
| TM#4 moved from South Hot Cell to to North East Silo, move went well. |
|
Tuesday, October 25, 2011, 08:47, Travis Cave, South Hot-Cell, Standard Operation, TM4, SiC#26 High Powered, Electrical check
|
TM#4 with SiC#26 HP has been checked electrically it has passed. It was noted that the Megger check of the Oven to Chassis (earth ground) and Oven to
60kV Common is low but will not hinder running, according to Don Jackson. Also yesterday the transition piece that sits on the 55 pin connector was
damaged from excessive handling, it was removed and repaired and it now back in place. |
|
Tuesday, October 25, 2011, 11:58, Travis Cave, South Hot-Cell, Standard Operation, TM4, SiC#26 High Powered, Module move
|
| TM#4 with SiC#26 HP has been moved from the south hot cell to the conditioning station. |
|
Tuesday, October 25, 2011, 16:57, Bevan Moss, Conditioning Station, Standard Operation, TM4, , Turbo Pump 1 issues
|
Roughing on TM1 started at ~15:00 today by ~16:30 the module had reached a pressure of ~200 mTorr and the turbo pumps were turned on. TP1 failed to achieve
normal operation and we running at approximately 4KRPM and 50W with 6.1 A of current draw. TP2 was able to achieve normal operation. The controller for
TP1 was then powered off and back on but that failed to resolve the issue. The controllers for TP1 & 2 were then switched at which point TP1 again |
|
Friday, October 28, 2011, 08:24, Travis Cave, Conditioning Station, Standard Operation, TM4, SiC#26 High Powered, Module move
|
| TM#4 moved from conditioning station to south hot cell. For further leak checking. |
|
Friday, October 28, 2011, 09:30, chad fisher, South Hot-Cell, Repair, TM4, , Tube Heater + Leak Check C.B.
|
Base Pressure: 0.0x10-4
Stable Leak Rate: 0.0x10-9
Leak check of tube heater circuit, containment box side was performed. |
|
Friday, October 28, 2011, 09:37, chad fisher, South Hot-Cell, Standard Operation, TM4, SiC#26 HP Febiad, SiC#26 installed on TM4
|
HP febiad target SiC#26 was installed onto Tm4 on Monday morning.
"JP's" connector required lossing of the two mounting fasteners. Connector was pushed tight to its mating half on the source tray and
both fasteners retightened, and the mating checked; it was good. |
|
Friday, October 28, 2011, 14:29, Bevan Moss, Conditioning Station, Standard Operation, TM4, , Leak Check on October 27/10/2011
|
A leak check was performed on the module on October 27/10/2011 by David Wang and was reported to Bevan Moss but it never made it into the Elog system.
This entry is to summarize the results of that testing. All circuits were pressurized to 80 psi with helium and every line except the tube heater (+) showed
no or small responses as experienced before. The tube heater line had a slightly larger response under the conditions summarized below: |
|
Friday, October 28, 2011, 14:42, Bevan Moss, South Hot-Cell, Maintenance, TM4, , Leak check on service cap feed through
|
After Chad and Davids leak check results from the containment box it was decided to perform a leak check on the feed through stem in the service
cap. This is a known point of failure on TM1 and the same design flaw is likely in TM4. Once the service cap was open a visual inspection was performed
and some oxidization of the copper line on the tube heater (+) circuit was observed (see attached pictures). The leak check was performed with the cart |
|
Monday, October 31, 2011, 08:51, Travis Cave, South Hot-Cell, Standard Operation, TM4, SiC#26 High Powered, Module move
|
| TM#4 with SiC#26 HP moved from the south hot cell to the conditioning station. |
|
Tuesday, November 01, 2011, 11:50, David Wang, Conditioning Station, Standard Operation, TM4, , TM4 leak test on conditioning station
|
I did a leak check again on TM4 today. This time, the leak detector pump to the bottom on both base pressure(0.0xE-4 torr) and base leak rate(0.0xE-9
atm.cc/sec). All high vacuum gauges on TM4 and conditioning station at -6torr range.IG1 is 3.3-6torr,PNG5(top of service cap)is 6.5-6 torr, and the PNG4(bottom
of the vessel )is 8.7-6torr. For air to vacuum leak checking, I checked the panel we moved last week on service cap by spraying helium around the panel. |
|
Wednesday, November 02, 2011, 13:12, Bevan Moss, Conditioning Station, Standard Operation, TM4, SiC#26 High Powered, High Voltage (HV) testing
|
The silicon carbide targets voltage was raised to 42 kV today before continuous current draw was observed. It took roughly 10 minutes to raise
the module to this voltage with only the occasional spark. The ION gauge reading was 2.0 x 10^-6 T, The service cap IMG 3.6 x 10^-6 T, and the secondary
vacuum was 4.5 x 10^-6 T. Setup check and conditioning was performed by Pierre. |
|