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.

 After discussion with Friedhelm it was decided to continue trying to condition the module today before moving it tomorrow. The voltage was quickly raised until 40 kV where it was left for ~30 minutes. Sparking was minimal. It was then slowly raised to 44.3 kV it held this voltage for ~8 minutes when the current started to climb (remained below 200uA as set as a limit in previous tesing). There was also sparking at this point. This continued for ~2.5 minutes until once again the water resistivity sensor tripped again. It appears that there is a~ 44kV limit on TM3. Attached is the data. I will present all of the data to the group tomorrow showing the results of multiple testing.

TM#3 with no target or source trays has been moved from the conditioning station to the NE silo.

On May 16th 2013 the module was HV conditioned all day. As a result the maximum stable voltage has been increased to about 47kV (~4kV more than last test). A maximum voltage of 49kV was achieved but the module was very unstable. Attached is the data from the testing. Note that occasionally the sparking caused the PS to reset, it was turned back on and the voltage increased back to what it was (or lower) quickly.

TM3 Rev 2 source tray/extraction column insertion into its storage was completed yesterday and it was then removed from the hot cell and put into the anteroom until June 25th when it will be moved into the vault tunnel.

The Box did have 10000 counts of contamination "all over" it. It has recieved inital decontamination and is down to 1000 counts.

The testing of the mock-up and tooling has commenced.

Source tray mock-up has been driven into the mock-up and the first two water block connections have been made; the first with the torque limiting 
T-handle tool and the second with the torque limiting air rachet attachment. Both seem to work well, although achieving the required torque with the manipulators proved to be near the limit of the manipulator.

All water block connections on the mock-up have bben achieved. It is now ready for leak checking.

The front half of the water block jig proved extremely difficult to remove.

The Mock-up has been leak tested after the remote connection of the water blocks and is leak tight!

Thanks everybody who contributed to its success.

Tm3 Rev.2 source tary has been transfered to the vault tunnel storage.

TM#3 with no target and no source tray was moved from the north east silo to the south hot cell the move went well.

I have inspected the service tray water block and suggest that they SHOULD be cleaned/polished before we install the new source tray.

The water blocks have slight water scalling to the inside of the ID of where the c seals locate.

I have taken two close up  pictures of each water block for reference and to document their current state. They can be found at http://documents.triumf.ca/docushare/dsweb/View/Collection-10841
 

TM3 has been moved from the south hot cell to the conditioning station. David and I completed the move. All went well.