TM#4 with Ta#57 has been moved from the east target station to the south hot cell.

Ta#57 has been removed from TM4.

 Electrical check of TM#4 with the old Ta#57, no target and with new IG-LIS UC#26 target. See attached PDF for details.

Chad and I did a leak check on TM4 HS line with UCx 26# installed . Base LR 0.0X E-9 atm.cc/sec. Base pressure 0.0XE-4 torr.  No response on leak detector during leak check.

 TM#4 with UC#25 has been moved from ITW to the south hot cell.

 Electrical check of the target module with the UC#25 attached after the beam run.

 TM#2 has been moved from the conditioning station to the south hot cell.

Containment box has been removed from TM2 in preparation for source tray removal. I will walk Aaron through removal of the optics tray today also.

Aaron has removed the optics tray in TM2 in preparation for source tray removal.

I have installed the module side water block jig.

The source tray has been removed from TM2.

module side water block jig has been removed in preparation for electrical checks.

The containment box has been reinstalled onto TM2 in prepatation for testing in the conditioning station.

TM4 optics tray was installed onto the old TM2 source tray yesterday and tray filled with non-active metal scrap. Tray inserted into transfer frame 95% yesterday. During insertion the ball nut of the transfer jig became unfastened from its drive plate. This will have to be fixed before the jig can be used reliably again however we were able to finish the job...the transfer jig is 20 years old now so it is not entirely suprising that it needs some attention.

Today the Tm2 tray final install into the transport tray occurred by driving the tray drive screw and bringing the tray into the transfer frame the last inch 1/2 or so. "Feet" (ITA2380) had to be removed from sliding tray assembly to fit in the box however upon attempting this is was immediately clear that one of the screws was stuck and must have been cross threaded during assembly. As as result the entire drive bracket (ITA2375) had to be removed form the source tray to allow final insertion into the box.

11 handles from spent target transfers, 1 plastic bin box, Ta LP test target TRI coil, 1 aluminum box, sockets and extensions from spent target transfers and 5 obsolete legs from previous source tray replacements were amoung the items disposed of with the spent source tray.

Transfer fixture has been remotely disassembled to the point where the ball nut lock plate assembly can be inserted into the tool port and the plate replaced by hand in the tool port without having to enter the hot cell. Straight head screws will be replaced with SHCS to facilitate easier re-assembly and future disassembly.

Repair of the tray transfer fixture is complete (minus testing).

A distorted ball nut lock plate was replaced and thread loc added. to the ball nut/plate assembly. Testing will take place tomorrow once the thread lock has a chance to cure.

The containment box has been removed from TM2 and the water block jig installed in preparation for water block polishing.

Pictures of the water blocks before polishing can be found on docushare, collection 24400

Polishing of the water block sealing surfaces has commenced. First attempt was on block B with low nap brown polishing pad (the least aggressive pad prepared) and isopropyl for 30 seconds. This cleaned a little but did not remove the "ring" which I believe is water scale. I will step up to 2000 grit wet sand paper and iso next.

After trials with 2000 grid wet paper I have moved up to "red" scotch brite. This seems to have worked the best so far although it took two minutes to remove the ring that the other materials could not remove (see picture).

I have moved to next circuit. Currently at 3 minutes and 30 seconds with scotch brite but significant ring remains.