 Tuesday, August 20, 2024, 11:36, Carla Babcock, South Hot-Cell, Standard Operation, , TiC#7, TiC#7 PIE
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TiC#7 failed after two weeks of operations - measurements in the electrical room indicated that the negative side of the CHT was broken (35kOhms to the
rest of the target). This was likely due to a large number of proton trips during this target run. At every trip I could see the CHT voltage getting higher
and more unstable. This cahnge in voltage was reflected in the unstable anode current and fluctuating RIB beam intensity, as a direct result of the fluctuating |
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Tuesday, August 20, 2024, 11:53, Carla Babcock, South Hot-Cell, Standard Operation, , Nb#10, Nb#10 PIE
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Nb#10 never worked online - repeller had no effect on the beam and one of the RF wires was touching HVC. Max 60pA was seen on the source cup. See notes
here ITW-TM2-Nb#10/#11-LP-IGLIS
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Thursday, July 21, 2011, 17:39, Bevan Moss, Conditioning Station, Repair, TM1, , TM1 Ground Electrode, Thermocouple line, Stem, panel, repairs 
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Over the period of July 20-21st TM1 had several repairs completed and tested. The easiest of the repairs was the installation
of a gasket and a blank off. The next repair was to replace the 2 oring on the side panels that were removed for inspection and repair. The instrument
panel oring was replaced again and the previous one measured. Both were found to have the correct diameter of 0.131 inches for the seal groove. When attempting |
 Friday, July 22, 2011, 10:30, Bevan Moss, Conditioning Station, Repair, TM1, , TM1 Ground Electrode, Thermocouple line, Stem, panel, repairs
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Bevan Moss wrote:
Over the period of July 20-21st TM1 had several repairs completed and |
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Wednesday, August 17, 2011, 13:09, Bevan Moss, ITW, Standard Operation, TM1, Ta #37, TM1 move from ITW to Hot Cell
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TM1 with Ta #37 target was moved from ITW to the south hot cell. The rotation of TM1 may have been off slightly during the final removal from ITW
but it was minimal. Entry into the south hot cell went with out incident. This was my first time moving the module without the presence of Travis Cave. |
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Thursday, August 18, 2011, 14:09, Bevan Moss, South Hot-Cell, Standard Operation, TM1, UCx#2, Leak and Electrical Check plus Remote Move to Conditioning Station
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TM1 with UC#2 had the target installed, the heat shield line was pumped on and achieved a vacuum of 0.0 x 10^-4 Torr and a leak rate of 0.0
x 10^-9 atm cc / sec with no response when sprayed with helium. An electrical check was completed by David and myself all values were withing tolerance.
The module was then moved from the south hot cell to the conditioning station where it will start pump down. The move was uneventful every operated |
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Thursday, August 18, 2011, 16:07, Bevan Moss, Conditioning Station, Standard Operation, TM1, UCx#2, Pump Down
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Pump down in the conditioning station started at ~2:40 for rough down. The turbo pumps were turned on at ~3:30 and at 3:52 the pressures were reading
as follows:
IMG in the containment box 9.2 x 10^-5 T |
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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 |
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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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