 Friday, August 16, 2019, 08:51, David Wang, Conditioning Station, Repair, TM4, , TM4 waterlines helium pressure test at TCS.
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LD base leak rate, 0.0Xe-9atm.cc/sec. Helium pressure, 70psi. 5 minutes each circuit. No response on all water line except containment box window which
has a VCR leak issue now. Window line leak rate, 2.3Xe-4 atm.cc/sec. |
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Friday, August 16, 2019, 08:46, David Wang, ITE, Standard Operation, TM4, ZrC #8., TM2 has been connected in ITE.
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| TM2 has been connected in ITE. turbo pumps have been started. ITE and TM2 vacuum are good. |
Thursday, August 15, 2019, 09:45, Travis Cave, South Hot-Cell, Standard Operation, TM2, ZrC#8, Electrical Check 
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| Electrical of TM#2 with ZrC#8 at the south hot cell. See attached for details. |
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Thursday, August 15, 2019, 09:36, Adam Newsome, ITE, Standard Operation, TM2, ZrC #8, TM2 Move
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| TM2 was moved from South Hot Cell to ITE. ZrC #8 target. |
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Wednesday, August 14, 2019, 11:43, Travis Cave, South Hot-Cell, Standard Operation, TM2, Ta#58 and no target., Results of electrical checks post beam at the south hot cell.
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Here are the results of the electrical done at the south hot cell post beam of with the Ta#58 target attached and with just the module no target
attached. |
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Wednesday, August 14, 2019, 08:55, David Wang, ITE, Standard Operation, TM2, , TM2 has been disconnected in ITE.
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| TM2 has been disconnected in ITE. The bias jumper between U and T was burned out during the last beam time. |
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Tuesday, August 13, 2019, 09:49, Adam Newsome, South Hot-Cell, Standard Operation, TM2, Ta 58, TM2 Move
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| TM2 was moved from ITE to South Hot Cell. Tantalum 58 target. |
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Thursday, August 08, 2019, 09:33, Carla Babcock, ITE, Development, TM2, Ta#58, TM2 HV conditioning with protons, round 1
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Starting HV tests on TM2 with 50uA of protons.
Tuesday, August 06, 2019, 03:37 : Ramping up 500V every 2mins or so, couple of sparks, then consistent sparks at 34kV. No vacuum response on IG1
for any sparks, even though the current spikes from around 40uA to 1300uA. Brought it down to 28kV to stop sparking. See a response on the EZL frequently. |
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Tuesday, August 06, 2019, 01:13, Carla Babcock, Conditioning Station, Repair, TM4, Dummy HP SIS target, Checks on EE line leak fix and window line leak (not fixed)
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TM4 has developed 4 leaks so far:
Line B - seems to be solved with an indium gasket (some testing already done)
Line D - seems to be solved with an indium
gasket (some testing already done)
EE - indium gasket installed, preliminary tests are good
Window cooling line - David found |
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Wednesday, July 31, 2019, 08:57, Adam Newsome, South Hot-Cell, Standard Operation, TM4, No Target, TM4 Move
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| TM4 has been moved from the Conditioning Station to the South Hot Cell. No target. |
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Monday, July 29, 2019, 16:17, Carla Babcock, Conditioning Station, Repair, TM4, Dummy LP SIS, New leak on EE water line while testing new In seals
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Original Problem:
Leaks on the B and D copper blocks, probably due to corrosion between the blocks and the inserts. Final solution, after many tries, was to make
an indium sheet the size of the copper blocks and use that to seal the entire surface. |
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Friday, July 26, 2019, 15:43, Isaac Earle, Safe Module Parking, Development, , , SMP vacuum control system completed
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The SMP vacuum control system has been wired and setup to be controlled from EPICS. Backing valve control (SMP:BV1) was tested by connecting
to the turbo pump solenoid on TM3 located in the silo directly north of the SMP. The SMP pump (SMP:MP1) was turned on and off through the EPICS interface
and responded as expected. Both convectron gauges (SMP:CG1 and SMP:CG2) responded as expected when the pump was turned on. The readings from |
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Friday, July 26, 2019, 11:41, David Wang, South Hot-Cell, Standard Operation, TM4, , TM4 with spare target electrical check and leak check.
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Electrical check on TM4 with spare test target. PQ is still shorted to RU. But, The short between 60KV bias and PQRU which we found last time is gone.
Target to PQRU at 250V mega measurement: 22.08 M. All conductivity between ABCD are about 5.0 m ohm which are good. All other ohm meter and Mega measurements
are OL. Helium spray leak check on HS target VCR fittings is passed. Two blank offs are installed on source tray window cool lines. They passed leak |
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Friday, July 26, 2019, 11:28, David Wang, South Hot-Cell, Standard Operation, TM4, , TM4 move from SHC to TCS.
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Tm4 has been moved from SHc to TCS without containment box. It is a new source tray on TM4. A layer of plastic sheet was put on TH floor on module
pass route during the move. |
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Monday, July 22, 2019, 14:51, Adam Newsome, South Hot-Cell, Standard Operation, TM4, No Target, TM4 Move
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| TM4 has been moved from the South West silo to the South Hot Cell. New source tray, no target. |
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Tuesday, July 16, 2019, 08:44, Travis Cave, Conditioning Station, Standard Operation, TM4, no target, Module move
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TM4 has been moved from the conditioning station to the south west silo. Module was placed with the turbo pump facing south which puts the windows
facing north and south and the shutter facing west. |
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Monday, July 15, 2019, 13:29, David Wang, Conditioning Station, Development, TM4, , Vacuum surge when TM4 B line iwas supplied with water.
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Yesterday, TM4 B line was supplied with water at TCS for testing. TCS: IG1 and IG2 had big response on it. See attachment. The water was disconnected
right away, and line was purged. Vacuum recovered after overnight pump. |
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Wednesday, July 10, 2019, 11:59, Carla Babcock, Conditioning Station, Repair, TM4, Dummy HP SIS target, Conditioning TM4 w/ new ST up to 50kV
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David raised the bias to 49.5kV. Module is still sparking mainly on top. Humidity is super high.
Wednesday, July 10, 2019, 09:50 : sitting at 49.7kV for a coupe mins, big spark in vacuum took everything down.
Wednesday, July 10, 2019, 10:16 : Bias at 50kV drawing 0.1mA but looking pretty jumpy. Left it here for ~5 mins then had to turn down bias for |
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Tuesday, July 09, 2019, 09:15, Carla Babcock, Conditioning Station, Repair, TM4, Dummy HP SIS target, Conditioning TM4 w/ new ST up to 45kV
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Left TM4 at 40kV overnight with no previous heating. There was only one real spark which turned off TP2 but ops turned it back on. Ramping up again.
Tuesday, July 09, 2019, 09:13 : At 45kV the module is sparking on the top pretty regularly. Turned down and David will remove cover and lock out
target hall. |
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Monday, July 08, 2019, 14:56, Carla Babcock, Conditioning Station, Repair, TM4, Dummy HP SIS target, First TM4 conditioning with new source tray
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Ramping up TM4 with new source tray in. Current condition: new source tray but no water running in lines B, D or window. Multipin on the source tray
grounded but no lines running into the service tray. Vacuum at 1e-6T.
Small sparks at each BIAS voltage increase starting at 30kV. First real spark around 38kV. |
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