 Friday, April 11, 2014, 11:35, David Wang, Conditioning Station, Standard Operation, TM3, , Helium pressure test on TM3 HS water line with new Ta target. at CS 6x
|
| The helium pressure test on TM3 HS water line with new Ta target is finished at CS. The circuit is leak tight.. No any response on LD. See pictures. |
|
Tuesday, April 04, 2017, 10:23, David Wang, Conditioning Station, Standard Operation, TM4, , Helium pressure leak check on TM4 Ta(-) water lines
|
This morning, The helium pressure leak check on TM4 Ta(-) is done after TM4 finished conditioning yesterday. LD base LR:8.0XE-9 atm.cc/sec, base
pressure: 0.0XE-4 torr. Applied 70 psi helium to TM4 TA(-) water line. The LR slowly climbed to 2.2XE-7 atm.cc/sec, and stopped there. Waited for 5 minutes
and change at 2.2 X E-7 atm.cc/sec. |
|
Thursday, August 27, 2020, 08:21, David Wang, Conditioning Station, Standard Operation, TM2, Ta#60, Helium pressure check on TM2 HS line at TCS.
|
Helium pressurize on TM2 HS line at TCS is done. Base LR is 0.0X E-9 atm.cc/sec. 70 psi helium 3 minutes. No response. Also, The TCS vacuum pumping
down over night is good. |
|
Thursday, November 19, 2020, 09:00, David Wang, Conditioning Station, Standard Operation, TM2, Nb#6, Helium pressure check on TM2 HS line at TCS.
|
| LD 0.0 Xe-9 atm.cc/sec , 70 psi helium 3 minutes. No leak. |
|
Monday, June 11, 2012, 14:41, David Wang, Conditioning Station, Standard Operation, TM1, Ta38, Heat shield helium pressure test
|
Connected leak detector to TM1 and CS vacuum system. The vacuum readings on TM1 and CS:PNG1 1.3 xE-6 Torr, IG1 4.7xE-7torr, IG4(diagnostic box)1.5xE-6
Torr. Leak detector base pressure:0.0xE-4 torr, base leak rate: 0.0xE-9 atm.cc/sec. Applied 80 psi helium to heat shield circuit for 5 mins . There is
no response on leak detector. The heat shield circuit is leak tight. |
|
Thursday, August 29, 2013, 17:16, Bevan Moss, South Hot-Cell, Repair, TM3, N/A, Heat Shield Repair
|
Today Chad entered the south hot cell on work permit 2013-08-29-3 to repair the leaking heat shield line. The heat shield line was removed from
the module and the surfaces cleaned. New C seals and spring were inserted and the line re-attached. During this time Chad also installed the new vacuum
gauge. Grant took video of this work and Keith some pictures. The video and pictures can be found on the M: drive (groups) in the RH folder. The total |
 Friday, August 30, 2013, 10:27, Bevan Moss, South Hot-Cell, Repair, TM3, N/A, Heat Shield Repair
|
Bevan Moss wrote:
Today Chad entered the south hot cell on work permit 2013-08-29-3 to repair the leaking heat shield |
|
Friday, August 30, 2013, 14:55, Bevan Moss, South Hot-Cell, Repair, TM3, N/A, Heat Shield Repair
|
Bevan Moss wrote:
|
|
Thursday, August 29, 2013, 09:08, chad fisher, South Hot-Cell, Repair, TM3, , Heat Shield Circuit Leak
|
The heat shield circuit was pressurized with air (15-20 psi) and snoop applied to the water block joint and brazes. Bubbles formed at the joint between
the two water blocks indicating that the leak is a c seal problem. Pictures attached but also on docushare Collection-11285. |
|
Thursday, August 29, 2013, 10:09, Bevan Moss, South Hot-Cell, Repair, TM3, , Heat Shield Circuit Leak
|
chad fisher wrote:
The heat shield circuit was pressurized with air (15-20 psi) and snoop applied to the water block joint |
|
Thursday, August 29, 2013, 12:03, Grant Minor, South Hot-Cell, Repair, TM3, no target, Heat Shield Circuit Leak
|
Bevan Moss wrote:
|
|
Tuesday, December 23, 2014, 14:10, Anders Mjos, Conditioning Station, Development, TM2, , He leak check of the Service Cap using RGA
|
| The RGA showed no response to He-spray on the Service Cap. He stable at 3.5E-9 T partial pressure, water at 1.3E-6 T. IG1 at 9.9E-8 T |
|
Tuesday, January 06, 2015, 11:21, Anders Mjos, Conditioning Station, Development, TM2, , He leak check of cooling circuits.
|
No leak detected on either He-detector (connected directly to Service Cap) or on RGA. See attached screen shots.
A vacuum increase (air only on RGA) was seen when de-pressurizing circuit I. |
|
Monday, July 22, 2013, 15:52, Bevan Moss, Conditioning Station, Standard Operation, TM3, No Source Tray, HV testing update
|
I have fallen behind on the HV testing that has been completed on TM3. Data can be found on docushare in the TM3 Rev 3 folder files are
too large to attach. From the last elog entry the following tests have been completed
July 8 2013 - Long HV conditioning 50kV achieved before sparking caused PS to trip. Was unable to recover to the same voltage |
|
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 |
|
Wednesday, February 22, 2023, 09:22, Carla Babcock, ITE/ITW, Standard Operation, , , HV testing of ITE/ITW
|
Feb. 16 2023: HV tests done on ITE station. Ramped up to 59kV but was not stable there, current draw was very unstable and was sparking every ~6mins.
Ramped down to 58kV and it was stable there for 3 hours drawing 285uA.
Feb. 24 2023: HV tests done on ITW station. Ramped easily to 60kV with no sparking - suspicious. Has been stable at 60kV for 45mins with no sparks |
|
Monday, April 04, 2022, 21:04, Carla Babcock, Conditioning Station, Development, TM2, , HV testing of IGLIS wires in TM2
|
TM2 is in the TCS without containment box for HV testing following the installation of the IGLIS wiring.
Not great results so far - sat at 42.5kV for nearly 2 hours, current around 200uA and occasional sparks. I did not have time to go higher, will
do this tomorrow. The sparks could be conditioning but it looks a bit suspicious to me. We will see if the ramp up tomorrow is very easy and how high we |
|
Tuesday, November 22, 2011, 15:07, Bevan Moss, Conditioning Station, Standard Operation, TM1, UCx #3, HV testing
|
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 |
|
Tuesday, October 22, 2013, 17:04, Bevan Moss, Conditioning Station, Standard Operation, TM4, , HV testing
|
This afternoon TM4 with the coil removed was tested with HV. The EINZEL LENS was first tested independently while the bias canbus was being repaired.
The current on the EL looked stable at 25kV for 5 minutes. At 27.5kV the current becomes unstable and occasionally sparks. This voltage was held for 30
minutes but the current did not appear to be becoming more stable. Further extended testing would be required to determine if this can be conditioned out. |
|
Thursday, May 17, 2018, 11:30, Anders Mjos, Conditioning Station, Maintenance, TM4, , HV test/conditioning of damaged source tray
|
BIAS only. Water lines looped on top. Containment box off.
Thursday, May 17, 2018, 11:20: Vacuum 7.2E-7 Torr
Thursday, May 17, 2018, 11:30: 10 kV |
|