 Monday, November 18, 2013, 16:42, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV Testing 
|
The Glory of TM2 continues 100V at a time. Today I brought the module to 46kV and left it there for 1 hour. During this time there was only 1 spark.
I then continues at up to 53kV. At this voltage the canbus continues to be temperamental when the module sparks. The module is still conditioning and I
will continue more tomorrow. Attached is the dumped data and a screen shot of the conditioning from 46kV to 53kV. |
|
Monday, November 18, 2013, 16:44, Bevan Moss, Conditioning Station, Standard Operation, , , Testing of cooling package
|
| I have tested all of the compressors for TCS. All are operational and cycled as they should. |
|
Tuesday, November 19, 2013, 14:24, David Wang, ITE, Repair, , , ITE TP3
|
Hi all, The old ITE TP3 pump is moved out and the new pump is in
postion .Since this time I used a new holding ring(1 piece) insead of old 2 pieces holding ring which are thicker than new ring, the old holding
bolts are a little bit too long for the thread holes on the ITE exit 1. I have to find the right length bolts for this new holding ring. The pump |
|
Tuesday, November 19, 2013, 16:55, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV conditioning
|
HV conditioning of TM2 continued today. At ~53.5kV the module started to spark externally to the HV cover. This is the first time the cover has
been tested to this high of a voltage due to the limitations of the modules. As such for the conditioning station to achieve 60kV while keeping the target
hall open of personnel the cover and cage will need to be modified. To continue with HV testing of TM2 the cover was removed and the target hall locked |
|
Wednesday, November 20, 2013, 13:52, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV testing of TM2
|
HV testing without the cover continued today. With the EINZEL lens at 30kV the target module was able to achieve 58.7kV. At this voltage any spark
was reeking havoc on the electronics of the TCS. Vacuum gauges signals were occasionally lost, the thermocouple reading would occasionally be lost, turbo
pump would turn off. All of these events caused the interlocks to trip resulting in the power supplies to be turned off. As a result I bypassed majority |
|
Tuesday, November 26, 2013, 14:10, Travis Cave, Crane, Maintenance, , , Thermal relay replaced
|
| The bad thermal motor protection relay for the crane has been replaced with a new unit. Crane was tested in pendant(local) operation and all drives worked. |
|
Wednesday, November 27, 2013, 12:50, Bevan Moss, South Hot-Cell, Standard Operation, TM3, , Ground devices wiring check
|
Travis and I completed an electrical check on the wiring harness for the devices on the ground plane. All lines passed 500V with the megger except
for PNG and the BTM steerer. Those devices had a short to ground. of ~1.4ohm. |
|
Wednesday, November 27, 2013, 15:24, Bevan Moss, South Hot-Cell, Maintenance, TM3, , Wiring Harness Electrical Test
|
Maico removed the containment box today allow Travis and I to further test the wiring harness. I disconnected the junction block and Travis and
I repeated the test from yesterday. The all lines except the PNG tested OL. The module was then lowered and the twisted pair connected to the pin that
corresponds to the steerer labeled BTM (it is likely this is not labeled correctly). This testing showed showed that the source of the short found yesterday |
|
Friday, November 29, 2013, 11:54, chad fisher, South Hot-Cell, Repair, TM3, , Steerer short investegation
|
Using in cell camera and transit the suspect line on the steerers was inspected as best as possible. An existing photo of the complete steerers before
installation was used for comparison. The wiring and beading inspected today showed no obvious problems, breaks or spots where there may be a short. In
comparison to the photo from construction, what we could see of the steerers looked identical to the original installation. |
 Friday, November 29, 2013, 11:57, Bevan Moss, South Hot-Cell, Repair, TM3, , Steerer short investegation
|
chad fisher wrote:
Using in cell camera and transit the suspect line on the steerers was inspected as best as possible. |
|
Tuesday, December 03, 2013, 09:58, David Wang, ITW, Standard Operation, TM4, , I moved 5 shielding blocks from ITW to block storage area.
|
| I moved 5 shielding blocks from ITW to block storage area. |
|
Tuesday, December 03, 2013, 10:35, Travis Cave, ITW, Standard Operation, , , fields above and in the target station with blocks off
|
The blocks have been removed from the west target station. The fields at the top of the target pit at the railing at waist level is about 80uSv/hr, Turbo
pumps are about 805uSv/hr, backing lines for the turbos about a 1mSv/hr and the average field in the area of work down in the pit is about 600 to 750uSv/hr.
The proton beam went off at 10:45 on December 2nd, these measurements were done at 09:00 on December 3rd. |
|
Tuesday, December 03, 2013, 14:14, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV conditioning
|
It was attempted to HV condition TM2 to 55kV and leave it operating there for an hour to demonstrate stability. Unfortunately at 52.65kV a spark
destroyed the canbus controller. This controller had shown issues in the past but seemed to magically fixed itself. I will contact Hubert for another card.
Attached is is a screen shot of the stip tools. |
|
Wednesday, December 04, 2013, 11:15, David Wang, ITE, Repair, TM4, , New bolts are installed on ITE TP3.
|
I installed 8 new bolts(3/8-16 UNC x1.25 STL) on the ITE TP3. The ITE TP3 replacement job is done. Everything is connected back to the pump. and
it is ready for starting. |
|
Thursday, December 05, 2013, 14:55, David Wang, South Hot-Cell, Standard Operation, TM4, , Leak check on TM4 target heat shield
|
Chad and I leak checked TM4 heat shied water circuit at SHC. The pumping down was very good.Base leak rate 0.0xe-9 atm.cc/sec. BP 0.0xe-4torr. Sprayed
helum twice on both VCR fittings.There is no response on leak detector. The circuit is leak tight. |
|
Thursday, December 05, 2013, 14:57, David Wang, ITE, Standard Operation, TM4, , Connected TM4 in ITW
|
| I connected TM4 in ITE. All turbo pumps have been started and wok fine including new TP3. Everything is good so far. |
|
Friday, December 06, 2013, 15:09, Bevan Moss, Conditioning Station, Standard Operation, TM2, , TM2 no source tray 55kV 1 hour
|
Today 55kV was applied to TM2 and held for over 1 hour with the EINZEL at 27.5kV. There were 2 sparks and the current was unstable at this voltage but
this test should be considered a success. Once again while bringing the voltage up the canbus continued to be a problem. After successfully passing the
test I continued to raise the BIAS and EINZEL. A spark at 57kV tripped a controller for the vacuum and the canbus. As stated before I believe the module |
|
Monday, December 09, 2013, 14:47, David Wang, ITE, Standard Operation, TM4, , I moved 5 shielding blocks from block storage area to ITE.
|
| I moved 5 shielding blocks to ITE. The ITE is configured to take proton beam. |
|
Thursday, December 12, 2013, 11:14, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV Chase Electrical Test
|
While under vacuum Travis and I completed diagnostics of the HV chase. Majority of the lines showed OL at 1kV but there were the following "failures"
A to P @ 250V 716kOhm
A to Q @ 1kV 25.18MOhm |
|
Thursday, January 09, 2014, 11:07, chad fisher, South Hot-Cell, Maintenance, , , Field Level
|
| I have managed to reduce the field at the broken manipulator from 12 mSv/h to 400 uSv/h. |
|