Service tray side of the waterblock jig is installed and all locking tabs enagaed save the heat shield circuit. Locking tab for heat shield circuit with be worked on Monday morning and installation of the source tray side of the waterblock jig should commence on monday as well.

Chad removed the source tray from TM3  today, see attached picture (video was also taken). There was some interference between the window cooling lines and the frame work as well as the clamps for the ground electrode and the water block alignment jig. There was also interference between the optics alignment post (specifically the mushroom top) and the water block alignment jig. Investigation into these inferences needs to be completed as they could cause trouble for the insertion of the new source tray and alignment of the copper lines. During removal it was easy to bend copper tubes out of the way but this clearly would not work during installation.

The source tray has sucessfully been removed from TM3.

I will put a report in the TM3 rev 3 docushare directory as there were some items of note during this procedure.

David and I checked circuits p and q (the water cooled coil ciruit) for flow this morning as, with the source tray still in the module, there was both a leak and a leak tight blockage. Both p and q allowed air flow through them confirming that the blockage was in the surce tray side of the system.

The heat shield circuit was also tested for flow and it passed.

David and I preformed a helium leak check on the service tray waterblocks and verify that no damage had been done during jig installation. All 14 circuits were checked and verified to be ok except circuit E and circuit I which were unstable when helium was applied. The resonse time on E and I would suggest that it is an issue with the bungs that were used and not the braze joint however.

With the aid of nic new manipulator snap fingers made by Maico the peek cable ties restraining the 9 pin connector wiring to the gas lines have been cut.

Travis and I removed the 55 pin connector from the service cap today. The feed through was left in place as a new design for the replacement has yet to be designed. It was not possible to test if the cables could be pulled easily as I believe there is still 1 cable tie in the containment box. The wires were cut flush with the top of the copper tube in case Chad cannot remove them via the hot cell. Other items removed include several cable ties and a clamp used to hold a cable tie. The side panels on the service cap we difficult to remove so copper never sieze was added when they were re-installed.  I have attached some pictures from before and after a complete record can be found in the TM3 docushare folder.

The 9 pin wiring has successfully been removed from TM3.

Checks of the wiring for the IMG are complete and have passed.

The source tray side of the water block jig has been removed in preparation for moving the module to the  conditioning station for electrical tests.

the containment box has been reinstalled onto TM3. After electrical checks it is ready to move to the conditioning station...for electrical tests.

TM#3 with no target and no source tray has been moved from the south hot cell to the conditioning station.

TM#3 electrical check with no target and no source tray, see pdf.

 Roughing on TM3 was started at 11:26am today

The turbo pumps are on. TP1 and TP2 once again timed out and had to be restarted before they would stay on.

Bevan Moss wrote:

This morning the Einzel Lens was tested on TM3 as the intention is to reuse this piece of equipment. The EL was able to achieve 39.9kV at ~1.35mA before a major spark happened and the power supply turned off. Also during testing the penning gauge suddenly shot up after a spark, it did not recover and had been acting strange in previous test, it was decided to ignore its value and continue testing but it should be replaced in the future. When I went to save the strip tool data I tried to save it as SDDS binary data out of curiosity and the tool crashed, it turns out this is on old feature and doesn't work anymore. A file was created but I cannot recover any of the data. If I do manage to do so I will will attach it later. Attached is the RGA and Archiver data.  Other items of note: Voltage was increased in 1000V increments until ~32kV when it started to have sparks. Increases were then reduced to 500V until 38kV when it sparked and further reduced to 100V increments where it worked until 39.9kV There is a inline and ballast resistor on the EL circuit values of each respectively are 145Kohm and 200 Mohm   The rga application is available at http://www.thinksrs.com/downloads/soft.htm

 The lost Binary file. Binary files are no longer used and cause the the tool to crash. The option has not been removed from the strip tool users are just supposed to know not to use it.

Bevan Moss wrote:

A HV test was conducted yesterday on TM3. There was no target and all items were tied to common or ground. The conductivity of the water ranged from 7.1 to 7.5 Mohm. 40kV @ ~600uA without continuous sparking was achieved. The Strip tool was run but something went wrong with the export and the vacuum gauge data is missing. I have attached the file for reference and the pulled data from the achiver (only logs every 300 seconds). RGA scans were taken periodically during the test nothing unexpected was measured but we also do not know what normal looks like. The RGA application is available at http://www.thinksrs.com/downloads/soft.htm. Other items of note include significant sparks disrupts the communication between the computer and the RGA, the PNG1 gauge and its controller, and TP2 local readout screen.

 Data has been put into and excel spread sheet

 Testing on TM3 without a source tray was completed on 13/05.2013. All items were tied to common and the water blocks were left open at the bottom of the module. They were left with the quick connections at the top. The vacuum was in the low 10^-6T range so this was deemed acceptable. The cooling lines withing the cage in the target hall were shorted so flow could continue. As you will see from the results a maximum of 44kV was achieved before a major spark turned the power supply off. I will be compiling all the the data so it can be compared. Also attached is the archiver data, strip tool data, and RGA data.

 The HV test completed on Monday was repeated today over a much longer time period. By taking longer there was slightly less sparking but once again a maximum voltage of ~44kV was achieved. The  resistivity of the water was much higher during this run so the leakage current was less but still in the >100 uA range. The spark that occurred during the ramp up to the maximum voltage caused the "water resistivity" limit to trip. This was a feed back through the control not the actual water changing as it recovered instantaneously. 

 To confirm that the sparking was coming from the module rather than the conditioning station TM3 was grounded and the conditioning station biased. Attached are the results. Highlights include that there was no sparking and the station was able to achieve 60kV (limited by controls from going higher). The current from the raw file has been corrected by the required factor of 5.