 Friday, August 19, 2011, 14:52, Bevan Moss, Conditioning Station, Repair, TM1, UCx#2, Leak Check
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A leak check was performed on the module when it was in the conditioning station today. There were no external leaks
found. When the coolant lines were check a small leak was found in the heat shield circuit. Base leak rate was 6.7 x 10^-9 atm cc /sec and rose to 4.1
x 10^-9 atm cc /sec quickly (~3 seconds) and remained there for the 2 minute test. The remaining lines |
Wednesday, August 24, 2011, 16:35, Bevan Moss, South Hot-Cell, Repair, TM1, UCx#2, Move, inspection and repair 
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On August 22nd TM1 was vented with Argon in the conditioning station. It had been pumping with just the roughing pump over the weekend so the UCx#2
target would not be exposed to oxygen. The move went without incident and took roughly an hour to complete. Once at the hot cell the panel was removed
by Tom Lyth and a leak check completed with Bevan, David Wong, Grant Minor, and Tom Lyth present. The connections to source tray were checked starting |
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Wednesday, August 24, 2011, 17:11, Bevan Moss, Conditioning Station, Standard Operation, TM1, UCx#2, Leak Check, HV conditioning and Module Move
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Today a leak check on TM1's external seals and the heat shield line was completed by David Wang. After 16 hours of the turbo pumps running on the conditioning
station stations pressures were 3.6 x 10^-6 T, 1.2 x 10^-5 T, and 1.8 x 10^-6 T for the containment box, secondary vacuum, and service cap respectively.
This is a significantly quicker pump down after the cross with small turbo pump was installed on the vacuum vessel. The base pressure of the leak testing |
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Tuesday, October 25, 2011, 16:57, Bevan Moss, Conditioning Station, Standard Operation, TM4, , Turbo Pump 1 issues
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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 |
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Friday, October 28, 2011, 14:29, Bevan Moss, Conditioning Station, Standard Operation, TM4, , Leak Check on October 27/10/2011
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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: |
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Friday, October 28, 2011, 14:42, Bevan Moss, South Hot-Cell, Maintenance, TM4, , Leak check on service cap feed through
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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 |
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Wednesday, November 02, 2011, 13:12, Bevan Moss, Conditioning Station, Standard Operation, TM4, SiC#26 High Powered, High Voltage (HV) testing
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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. |
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Friday, November 18, 2011, 16:29, Bevan Moss, Conditioning Station, Standard Operation, TM1, N/A, High Voltage (HV) testing
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TM1 was high voltage tested without a target on November 16, 2011 with Don Jackson, Pierre Bricault, and Bevan Moss. The module was able to hold
up to 25 kV but between that and 32 kV there was lots of discharge which could be measured in the vacuum. See the attached plot for the voltage current
and sparks. |
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Tuesday, November 22, 2011, 15:07, Bevan Moss, Conditioning Station, Standard Operation, TM1, UCx #3, HV testing
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High Voltage (HV) testing was completed on TM1 today. Vacuum was very good 1.9 x 10^-7 T in the service cap, 3.2 x 10^-7 in the containment box,
and 2.0 x 10^-6 in the secondary. The voltage was successfully brought up to 27kV with a current draw of 0.12mA and o sparking. At the next step, 30 kV,
the current draw was above 0.3mA and sparking was beyond 20 sparks per minute. The module should not be taken above 27kV. There is the possibility this |
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Monday, April 16, 2012, 16:17, Bevan Moss, Conditioning Station, Standard Operation, TM1, No Target, High Voltage Test
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A high voltage test was completed on a target free TM1 in the conditioning station. Only the turbo pumps on the target module were operational
due to phase 2 construction. Testing started at 2:51PM with the following vacuum gauge readings, 1.6 x 10^-6 Diagnostics Box, 7.4 x 10^-7 Service Cap,
2.0 x 10^-6 Containment Box. Voltage was increased ~3kV at a time every minute until 21 kV was reached with a current of 0 uA. Voltage was then increased |
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Tuesday, April 24, 2012, 10:36, Bevan Moss, Conditioning Station, Standard Operation, TM1, Nb#6, HV test April 23
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A HV test was complete on TM1 with Friedhelm, David, and Myself. The module behaved as it has in other tests. The vacuum achieved was 1.6 x 10^-6
in the diagnostics box, 2.3 x 10^-6 in the containment box, and 8.6 x 10^-7 in the service cap. Maximum voltage without continuous sparking achieved was
27kV. Current was unstable varrying from 40 to 300 uA. This voltage was held for 10 minutes. |
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Tuesday, June 05, 2012, 12:20, Bevan Moss, South Hot-Cell, Standard Operation, TM1, Ta#38, Target inserted into HC
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| Ta#38 has been placed into the south hot cell. Swipes of the tool port were taken there was a count of 600 on the floor and 150 on the walls and top. |
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Tuesday, June 05, 2012, 15:06, Bevan Moss, ITW, Standard Operation, TM1, Nb#6, Module move from ITW to SHC
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TM1 has been moved from ITW to the SHC. The move did encounter some issues, one of the railings for preventing people from falling into the MAA
was hit with the containment box. This caused the module to rotate. The module rotated ~90 degrees before the problem was noticed. The module was backed
off from the post once noticed but had already freely rotated. The box was inspected with the cameras prior to being inserted into the SHC. No damage was |
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Thursday, June 07, 2012, 11:58, Bevan Moss, Conditioning Station, Standard Operation, TM1, Ta38, Module Move from SHC to TCS
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TM1 was moved from SHC to the TCS. The mode took roughly 1 hour. During the move the north east corner of the containment box caught slightly on the
flange of the vacuum vessel and then slipped off. The contact was minimal but should none the less be noted. After sliding off of the flange the module
did not crash into the other sides of the vacuum vessel, this is why I believe the contact was minimal. It should be noted that the corner of concern is |
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Friday, July 13, 2012, 16:33, Bevan Moss, Crane, Repair, , , Crane has stopped working
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In the AM today David and I used the crane to raise the ground plate sheet metal into place. This afternoon when I attempted to return the crane to its
usual place I discovered that the crane no longer worked. Upon further inspection it appears that the PLC has lost power. I will follow up on this Monday
morning. The crane is not supporting any load at this point. |
 Monday, July 16, 2012, 11:55, Bevan Moss, Crane, Repair, , , Crane has stopped working
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Bevan Moss wrote:
In the AM today David and I used the crane to raise the ground plate sheet metal into place. This afternoon when I |
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Tuesday, October 09, 2012, 11:17, Bevan Moss, ITE, Standard Operation, TM4, NiO#1, Module Move
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| TM4 with NiO#1 was moved from ITE to the SHC today. The move went well with no issues. |
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Tuesday, October 09, 2012, 14:53, Bevan Moss, Conditioning Station, Development, TM4, UCx#5, Module Move
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TM4 was remote moved from the SCH to the TCS today. This was the first time the module was moved with the framework for the cage in place. The ion gauge
on the service cap is closer to the cage than anticipated and as a result the pins for the gauge were sheared off. Discussion as to how to repair the gauge
(both short term and long term needs to be had). We will try and rough down the TM tonight, it is not believed the vacuum will be affected. |
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Wednesday, February 06, 2013, 14:34, Bevan Moss, Conditioning Station, Development, TM4, CS Test Target #1, 40kV All Common w/o Water Test
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Today the module was biased to 40kV in the conditioning station. The current draw was 0uA. Sparking started at 27 kV. I have attached the recording
from the strip tool of the vacuum while we were testing. After consulting Pierre if we should take the module to a higher voltage it was decided not to.
The purpose of this test we to check the interaction between the module, cover, new cooling line, EE and EINZEL cables. This test was considered a success |
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Friday, February 22, 2013, 13:02, Bevan Moss, Conditioning Station, Development, TM4, CS Test Target #1, HV test with Water
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Hello Ray and Yi
Completed a HV test with the water flowing today.
8.96 Mohm |
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