Results of the electrical check of TM#4 with SiC#26 attached post beam.

TM#4 with SiC #26 was moved from the East Station to the South Hot Cell. Bevan was at the helm of the PLC. There was no issue with the move.

I disconnected TM4 in ITE. The heat shield water circuit is purged. I  closed the water supply to ITE.Now, the water system only supply water to ITW and the system pressure is 110 psi which is good.I visually checked S-tank sight glass,and the water level is stable comparing to last week. Also, I visually checked the ITW water signals  strength and stability on electrical panel from electrical room.Everything looks fine.

 I moved 5 shielding blocks from ITE to ITW .  I checked  all ITW water signals strength and frequency in electrical room, and everything looks fine.The ventilation system is set up for ITW. MAA is locked. ITW is ready for taking proton beam.

Due to weak magnetic field on TM4 EE water flow wheel, we have two times intermittent water signal on this circuit this morning. I replaced the old wheel with a new one in ITE. I checked the signal frequency and strength.It looks fine now.

The the magnetic field on ITE TM4 flow wheel  was gone yesterday.So there is no water signal on this circuit. The water flow is fine ,and the wheel is rotating. I removed 1 shielding block on ITE and replaced the old wheel with a new one.Now the containment box water signal is normal.The problem is fixed.The shielding block is back.

 The pumping down on TM1 and conditioning station is fine over the weed end. The PNG 1(containment box) is 2.4xe-6 Torr, the IG1 (top service cap) is 9.0 xE-7 Torr, and the IG4 is 1.9xE-6Torr (diagnostic box). At this pressure, I connected the leak detector to the system and applied 80psi helium to the heat shield circuit. The leak rate and base pressure on leak detector are 0.0xE-9 Atm.cc/sec and 0.0xE-4Torr. There is no any response on leak detector during 4mins helium applying time. So the heat shield and Nb5 target water circuit is completely leak tight.

 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. 

TM#1 with Nb#6 from the conditioning station to the west target station, move was uneventful. Mike LaRoss was there today for move in place of Don Dale working the PLC.

TM#1 with Nb#6 is now in the conditioning station. The fields of the module at the south cell was 15.8mSv/hr. The move was uneventful. Don Dale was present for the move locking out parts of the code so only one movement of the crane could be done at a time.

Chad and I did a leak check on TM1 Nb5 target heat shield circuit. The leak detector was connected to heat shield circuit.The pumping down  of the  circuit is very smooth.Base leak rate is 0.0xE-9atm.cc/sec,and the base pressure is 0.0xE-4 torr. Chad checked the helium flow downstairs .He sprayed helium to both up and down VCR joints 2seconds each time. There is no any response on leak detector(30 seconds waiting time). Both joints did the same test twice, no response . Finally, he flushed helium around the target for 10 seconds,and i didnt see any response on leak detector either.The heat shield circuit on TM1 Nb5 target is leak tight at this stage.

Electrical check has been completed of TM#1 with Nb#6 attached. Our new micro-ohm meter was also used for the first time for this test.

TM#1 moved from conditioning station to the south hot cell, the module had a field of 16mSv/hr.  The move was not without excitement as the crane decided on its own to move 2 inches west on two occasions during the move.On the second time that the errant moved happened I hit the E-stop on the crane kill the power, the first time it happen it stopped the errant movement on its own.

Nb#6 has been inserted into the south hot cell in preparation for ionstallation onto TM1. During the pre-insertion inspection I noticed that I could see the foil installed into the ionizer tube and that in did not seem to be seated or concentric to the tube itself. I had Anders and Friedhelm check this and they deemed that it was ok.

 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 in ~1.5kV steps every 2 minutes until 30 kV was reach at a current of 60uA. This was held for 7 minutes until a spark occurred and the current spiked to 300uA and the voltage dropped. The voltage was dropped back to zero. The vacuum gauges had increased and read the following  1.6 x 10^-6 Diagnostics Box, 7.9 x 10^-7 Service Cap, 2.1 x 10^-6 Containment Box. Testing was restarted 2 minutes later (the vacuum gauges were still recovering for ~ another 2 minutes) and the voltage was quickly increased to 24kV reaching a current of 100uA. at 3:22 The current then fluxuated but trended up for the next 12 minutes peaking at a total current of 240uA. After this point the current started deceasing, at 3:41 the testing was concluded and the average current was ~170uA. The vacuum gauge readings were 1.6 x 10^-6 Diagnostics Box, 7.4 x 10^-7 Service Cap, 2.0 x 10^-6 Containment Box. It was deemed that this is "not ideal but good enough" to put the target on.  The maximum known required voltage will be ~22kV for Berillium which TM1 should be capable of providing.

  I hooked up the leak detector to the TM1 and conditioning station vacuum system, and did the air to vacuum leak check on TM1 and station. The leak detector base leak rate 0.0x-9Eatm.cc/sec,base pressure 0.0x -4E torr. I sprayed helium around all water quick connectors (especially heat shield),gasline and valves, all gauges, turbo-pumps, bellow,  flanges, and blank-offs. There is no any response on leak detector. The TM1 is leak tight on air to vacuum seal. All   water lines on this module had been pressurized with 80psi helium when module was located in ITW on this January, and they are all leak tight. Bevan and I did a leak check on new installed diagnostic box and all vacuum lines, gauges, and turbo pump last week, and they are all leak tight. So I would say the whole vacuum system on TM1 and conditioning station now is leak tight. Right now, the PNG1(inside containment box ) is 6.5 xE-6Torr, the IG1 (top service cap which close to turbo) is 2.1xE-6 torr, and the IG4 (inside diagnostic box) is 4.1xE-6 torr.  

TM1 moved to conditioning station to today. After moving, I connected the vacuum system which include all gauges ,vacuum lines , controllers,and fans.I started roughing the station through two turbo pumps(on TM1) . After 2 hours roughing, the station vacuum went to 100 mtorr. I started TP1 and TP2 on TM1 and turned on 3 gauges (png1 on service cap, ig1 on service cap ,and png4 on emittance box) . All  turbo pumps and high vacuum gauges work fine .The pumping down of the station is smooth so far. With only 1 hour turbo pump on all three gauges readings are at low -5 torr range. The fans for cooling the turpump are also turned on. Everything is fine.

TM#1 has been moved from the NE silo to the Conditioning Station.

 MAA is secured .The ITE and MAA are ready for taking proton beam now.

I did a leak check on conditioning station vacuum system today.The vacuum system had been roughed over night . This morning before the leak check,the convectron gauge  reading on emittance box is 20m torr which is reasonable. I hooked the  leak detector to system (without turbo pump  on) . The leak detector showed base LR 6.3xE-8 atm.cc/sec. At this base LR, I found 2 leaks up to low E -6range on that cross tube flange to small turbo pump, and the cross tube flange to vessel. I found some of the bolts on the flanges could be tightened more ½ to ¾ turn without difficulty. I checked all the fasteners on the box, cross tube, and turbo pump, tightened some of them. By doing it, the base leak rate dropped to 3.0x E-8 atm,cc/sec, base pressure still 0.0XE-4 torr. I sprayed helium again, the response I found before now disappeared. I waited for about 1hour, and let the leak detector base leak rate dropped to 1.3 xE-8 atm.cc/sec, and base pressure still at 0.0xE-4 torr. At the same time, i only use leak detector as back up pump for whole sysytem and shut off the valve to the scroll pump.By doing this , the leak detector is much stable on the base leak rate. With the help of Bevan, i sprayed the helium to all the vacuum  equipments again.This time,no any tiny response has been found on leak detector.The leak rate stayed at 1.2x E-8atm.cc/sec, and no change on pressure also. I checked helium bubble several times during the spray. The conditioning station vacuum system is leak tight.