TM4 has been reconnected back to ITE. I started all turbo pumps on ITE and TM4. The ITE TP4s was extremely difficult to start. This pump is new, and was replaced before  the last ITE beam time on July. After several times try and starting mode switch, it is started. Its temperature and current draw showed on controller and very good after the start. The current draw on ITE TP1s is  s a little bit high and unstable. I will keep watching on ITE TP1s. I think the ITE TP1s is close to the end of the pump life. Other pumps are good so far.  

TM#4 with Ta#44 has been moved from the east target station to the south hot cell.

Dan and I disconnected TM4 in ITE.

The spent Ta#44 target has been removed from the south hot cell, it was placed in pail #121 and placed in spot 4A of the storage vault. It was 276mSv/hr upon removal from the south hot cell.

TM#1 with Ta#43 electrical check see attached PDF.

TM#1 with Ta#43 has been moved from the south hot cell to conditioning station.

TM#1 with Ta#43 has been moved from the ITW to the south hot cell.

Ta#43 has been moved from the south hot cell to the spent target vault. See attached PDF for details.

Ta#42 has been installed onto TM4. The "new" 9 pin connector was not an issue...attually went on better than any other previous one. Leaving the mounting screws loose on the target half allowed use of the manipulator to center the pins and insert them with ease.

TM#4 was checked electrically with and without target on it, see attached PDFs for details.

Chad and I leak checked TM4 HS line with Ta#42 target on the module. The leak detector base LR 0.0xE-9 atm.cc/sec, base pressure0.0xE-4 torr. Chad applied helium to the joints, and flushed the helium around the target. No leak has been found.I will do helium pressure test on this circuit at CS later.

TM#4 with Ta#42 has been moved from the south hot cell to the conditioning station.

TM#4 with Ta#42 in the conditioning station under vacuum electrical check.

TM#4 with Ta#42 has been moved to the west target station.

PDFs of temperature and flow traces are available on DocuShare

Monday, April 28, 2014, 09:27. p+ off since 8:20

Tuesday, April 29, 2014, 09:28: p+ 30 uA

Monday, May 05, 2014, 10:49: p+ off since 8:39
(Downloaded data and updated traces on DocuShare)

 Wednesday, May 14, 2014
(Downloaded data and updated traces on DocuShare)

TM#4 with Ta#42 has been moved from  the west target station to the south hot cell.

TM#4 electrical check with Ta#42 attached post beam at the south hot cell.

Ta#42 in pail #114 has been moved from the south hot cell to the spent target storage vault and place in spot 7B. The target was 277mSv/hr upon removal from the south hot cell. See attached PDF of vault status.

The conductance check on the electrical check was found to be outside of accepted values for the TBHT at 7.0 mOhm. A successful attempt to reduce the conductance was made by re-tightening the bolts on the TGHT legs in the SHC. Grant operated the manipulator and torqued the bolts to about 1/8 of a turn with the air ratchet. The conductance across the TGHT (A-B) could be improved from 7.0 mOhm to 6.2 mOhm by re-tightening the bolts. The value is still somewhat higher than usual, but was deemed to be acceptable. Measurements attached.

Anders Mjos wrote:

The conductance check on the electrical check was found to be outside of accepted values for the TBHT at 7.0 mOhm. A successful attempt to reduce the conductance was made by re-tightening the bolts on the TGHT legs in the SHC. Grant operated the manipulator and torqued the bolts to about 1/8 of a turn with the air ratchet. The conductance across the TGHT (A-B) could be improved from 7.0 mOhm to 6.2 mOhm by re-tightening the bolts. The value is still somewhat higher than usual, but was deemed to be acceptable. Measurements attached.

1. TGHT leg bolts were loosened, and resistance was measured very high, as expected.

2. TGHT leg bolts were then tightened, loosened, and tightened again, and the resistance improvement was then measured (from 7.0 mOhm to 6.2 mOhm).

3. Another attempt was then made to loosen and tighten to see if there would be further improvement.  The right bolt was loosened, but the left bolt was found to be quite stiff and was left as-is (not fully loosened) for fear of breaking the supporting insulator.  Both bolts were then re-tightened, and resistance was checked to be about the same as achieved during the previous loosening / tightening attempt (step 2 above).

To tighten the bolts in all cases: the air ratchet was used first to turn the bolts "air tight" (air pedal only, no manual force) and then with the air pedal held down, manual torque was applied to turn no more than 1/8th of a turn.