ITH MP1 is replaced today with a new style pump.The new pump is 0.75 inch higher than  old pump on inlet and exhaust so a new solid inlet adapter  (KF50-25) has to been used. For future secondary pump ITH MP1S replacement, we need a new adapter 0.75 inches shorter as well.   The new pumps is started . Everything works fine. Old pumps is drained , bagged, and stored in TH B2 level. All radioactive garbage produced during the job are bagged , tagged, and stored in TH as well.

Edi and I replaced the broken ITH MP1 in target hall with a new pump. The old pump was leak on oil. There were no oil had been left in the old pump by checking the sight glass.Thats the reason of  the pump  failure.The tray which the old pump sat on was full of leaking oil ( highly contaminated ). The old pump was bagged in 3 thick plastic bags ,and the tray was cleaned before the new pump was installed. The working area had been cleaned up and surveyed couple of times after the job. Everything is good. The new pump had been tested after the installation. It works fine.

ITE TP1S new pump is installed today. Reset pump life time on controller to 0 hr.

ITE:ANODE supply reading strange currents - 17mA with the power supply on and no voltage. Checked anode circuit from electrical room:

Anode wire in electrical room shows 0L at 250V

Circuit with 50kOhm resistor mostly looks good (49-52kOhms) but a couple times read 28kOhms, no idea why. Tried jiggling all cables, unplugging and replugging and everything looks fine.

But power supply still seems to be giving out signal for 17mA readback. Decided fastest to swap with TCS power supply and troubleshoot this one on the bench.

With both stations in operation,ITE dump supply gauge reading is 27 psi. ITW is 20 Psi.  I adjusted ITW dump pressure to 25 psi by changing the return line side pressure relieve valve.

ITE full operation+ ITW no TM: ITE dump pressure 27psi, ITW dump pressure 27psi.

2019-01-30: Water only supply to 2A beam lines only on both side, No TM2 and TM4 in water loop.  ITE dump pressure 27psi, ITW dump pressure 27psi.

ITE/ITW  are cleaned with vacuum canister. HV  cage inside and blue nylon insulators are wiped.  Garbage inside the pits are cleaned out.

The ITE water system maintenance job is done. Changed all paddle wheels and coils on ITE flow sensors. All using water poly-tubes in ITE are replaced .  Started high active water pump, and checked ITE water signals. They are good. No leak has been found on  replaced tubes and related fittings.

Annual ITE water signal interlock check is done.  HS, TAR, TUBE, MSP, EE, COIL 1, containment box window, HVC1, HVC2, 2A window, 2A  shielding plug, 2A dump, 2A collimator, and 2A tank water signal interlock are checked.   Everything is working properly.  

2021-06-22. Annual ITW water signal interlock check is done,  HS, TAR, MSP,  EE, COIL1 , containment box window, HVC1 , HVC2, 2A window, 2A shielding plug, 2A dump, 2A collimator, and 2A tank water signal interlock are checked. Everything works fine.

ITE water signal interlock check is done. Everything is good. Coil 2   circuit no longer used in ITE . PQRU are looped as one circuit fro coil 1 circuit on Module since now.

ITE water signal interlock check including HS,EE, TA, TU, MSP. Coil1 , C-window ,2a-window, 2A tank, 2A shielding plug , 2A dump, 2A collimator  are done. All things work.

ITE water  signal interlock   check is done.  Everything is good. It is a annual check we do in winter shut down time.

ITE water signal annual interlock check is done. Ed helped me on this check. Everything works normal.

We do this check once a year now. Rene found a target oven reset issue during the check . He will consult with Friedhelm. The interlock check is good.

 ITE water flow wheels and coils are replaced. Wheels and coils on Oven, Tube, HS, EE, MSP, Febiad coil, containment box window, dump, dump plug, 2A window, and tank return circuits are replaced with new parts.

ITE and TM3 Turbo pumps have been started successfully yesterday. The vacuum reading on all ITE high vacuum gauges are at low E-6 range after one night pumping down which are good so far. There is no any sign of leak on BL2A window and the flange seal on ITE side. Yesterday afternoon, Ron , Edi ,and I  did a leak check on the ITE BL2A window flange(2aTunnel side). The leak detector was hooked onto BL2A in tunnel. Ron and I supplied helium from TH  to the helium test line(located in  ITE pit) which  we have on ITE BL2A window flange.   The helium test line end nozzle is just located under  the bottom of the 2A window flange. Edi was in BL2A tunnel checking the leak detector. We supplies 10- 15 psi helium 3 times to the test line. Each time for 10 seconds. The helium flow was checked twice and they were good. The LD base LR was 2.2xE-5 atm.cc/sec, After 70 seconds , The leak rate on LD was increased to 5.3 xE-5 atm.cc/sec. The leak rate reading  recovered after 20seconds. There is no obviously conclusion where the leak is. At that moment, Ron said, he and Edi would like to do  some further leak check  in 2A tunnel,and I went back to my job.

They work fine. Current draw on all pumps are normal. I asked operator to switch on IG1 , IG1S and PNG4.

ITE venting is in processing.

ITE target module flange seal has been replaced.The flan surface and the o-ring groove have been cleaned with Acetone before the new seal is installed. See attached picture.

ITE target module tank flange o-ring was replaced yesterday before TM4 moving. ITE: IG1S reading looks fine so far. 

See the attached for the way ITE has been re-wired for the Ta62 run. Note also that the copper block in the schematic on TBHT negative may not actually be connected. Wiring verification on Aug. 4.