 Friday, October 04, 2013, 19:05, Grant Minor, Conditioning Station, Standard Operation, TM3, NiO#2, HP Conditioning - e-mail notes from Oct 2nd to Oct 4th
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I have compiled the e-mail comments from people involved in High-Power Conditioning of TM3 w/ the new Rev 3 source tray and NiO#2 since Bevan Moss' last
log on October 2nd below:
On October 2nd at 6:35pm Friedhelm Ames wrote: |
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Friday, October 04, 2013, 19:39, Grant Minor, Conditioning Station, Standard Operation, TM3, NiO#2, TCS vacuum improvement w/ heaters off - 2:20 pm to 7:17pm
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Here is the change in the TCS vacuum after heaters were turned off earlier today:
2:20 pm readings
TCS:IG1 (service cap) 9.3 x 10^-7 Torr |
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Saturday, October 05, 2013, 14:45, Friedhelm Ames, Conditioning Station, Standard Operation, TM3, NiO#2, vacuum readings
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IG1 8.0 e-7 T
IG1S 2.5 e-6 T
IG2 4.3 e-6 T |
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Sunday, October 06, 2013, 00:17, Friedhelm Ames, Conditioning Station, Standard Operation, TM3, NiO#2, high voltage conditioning
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high voltage conditioning was carried out over the day up to 24 kV. i will leave it at 20 kV over night. Current is at 22 micro Amps, heaters off.
vacuum: IG1 7.7e-7
IG2 4.07 e-6 |
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Sunday, October 06, 2013, 15:39, Friedhelm Ames, Conditioning Station, Standard Operation, TM3, NiO#2, HEATERS STARTED
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The high voltage was sparking several times during the night. It may be correlated with the cycling of the cooling water temperature and conductance.
vacuum levels at 11:00
IG1 7.5e-7 T |
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Sunday, October 06, 2013, 17:08, Friedhelm Ames, Conditioning Station, Development, TM3, NiO#2, trip of all power supplies
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All power supplies tripped on high conductivity of the cooling water < 5 MOhm, It is not clear if this was caused by a spark or vice versa. According
to the strip tool for this signal the resistance of the water went up. There might be a fault in this signal. I do not have permission to force this signal
so I keep the heaters off. We should revisit the interlock conditions, this signal should not be included in the interlocks for the heaters. Both target |
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Sunday, October 06, 2013, 20:28, Friedhelm Ames, Conditioning Station, Standard Operation, TM3, NiO#2, turbo pumps stopped
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vacuum readings before stopping
IG1: 7.4e-7 T
IG2 3.8 e-6 T |
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Friday, October 18, 2013, 14:37, Bevan Moss, Conditioning Station, Standard Operation, TM4, , Roughing Started
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| The roughing pump has been started. |
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Friday, October 18, 2013, 15:55, Bevan Moss, Conditioning Station, Standard Operation, TM4, , Turbo Pumps are on
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| The Turbo pumps are now running on TCS |
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Monday, October 21, 2013, 10:52, Bevan Moss, Conditioning Station, Standard Operation, TM4, , Cooling On and Electrical Connections Made
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| The electrical connection have been made and cooling package was started at ~10:50am today |
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Monday, October 21, 2013, 12:29, Bevan Moss, Conditioning Station, Repair, TM4, , BIAS Canbus
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There is something wrong with the BIAS canbus controller. It says that it is not alive and has timed out. I have tried unplugging it and plugging
it back in but that has not resolved the problem as it normally does. I have contacted Dave Morris and am waiting to hear from him. I cannot HV test without
this controller. |
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Tuesday, October 22, 2013, 16:52, Bevan Moss, Conditioning Station, Repair, , , Canbus base card for BIAS
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| The base card in the canbus BIAS module was determined to be faulty. Dave Morris removed a card VECC to repair the conditioning station. |
Tuesday, October 22, 2013, 17:04, Bevan Moss, Conditioning Station, Standard Operation, TM4, , HV testing 
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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. |
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Tuesday, October 22, 2013, 17:07, Bevan Moss, Conditioning Station, Standard Operation, , , services shut down
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| The turbo pump, roughing pump, have been turned off and the valves for venting opened. The cooling package has also been turned off. |
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Tuesday, November 12, 2013, 12:43, Bevan Moss, Conditioning Station, Standard Operation, TM2, , TM2 moved from SHC to TCS
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TM2 was moved by myself and David from the SHC to the TCS. Move went well. Curiously the fields on the module were measured higher than the previous
measurement (now ~5.8mSv/hour) . |
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Tuesday, November 12, 2013, 14:31, Bevan Moss, Conditioning Station, Standard Operation, TM2, , Turbo pumps started
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| The turbo pumps have been started on TM2 and the conditioning station. |
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Tuesday, November 12, 2013, 14:33, Bevan Moss, Conditioning Station, Repair, , , Cooling manifold returned
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| The cooling manifold for the conditioning station high power water cooled lines has been returned. The cooling package can once again be operated |
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Wednesday, November 13, 2013, 10:01, David Wang, Conditioning Station, Repair, TM2, , TM2 leak check at conditioning station
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I leak checked TM2 at conditioning station this morning. All air to vacuum seals on the top of the module are good. All water lines are pressured with
60 psi helium for minutes each. One of the tube heater + water line( 2lines for tube heater + for supply and return) has a huge response on 60 psi helium
pressurizing. The leak rate went from 6.0xE-9atm.cc/sec to maximum leak rate in 5 seconds and I saw a pressure increasing either. when I pressurize the |
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Friday, November 15, 2013, 16:48, Bevan Moss, Conditioning Station, Standard Operation, TM2, , HV Testing
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High voltage testing was started on TM2 with no source tray today. The maximum stable for 1 minute voltage reached was 47.5kV but the module is
still conditioning. With every step up in voltage the current goes up a large amount and slowly bleeds down. Large sparks disrupts the connection of the
CANBUS to the PS which is irritating but the module can be brought up to the equivalent voltage in less than 30 seconds. Attached is a screen shot of most |
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Monday, November 18, 2013, 11:54, Bevan Moss, Conditioning Station, Repair, TM2, , Fault on TCS Chill
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This morning when I went to start HV conditioning CP2 and CP3 both had faults and the temperature of the water was ~27C. I reset the compressors
by flipping the system reset switch. This cleared the fault and allowed the compressors to come one. To the best of my knowledge these faults happen as
a result of compressor fluid pressure too low or high and temperature too low or high and lack of flow. The system cannot determine which one it was that |
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