TM#4 with no target has been moved from the south hot cell to the south west silo.

Electrical check done on TM#4 with no target, see PDF.

 Today Maico and Travis completed and electrical test to determine the right and left coil on TM4. The left coil is the negative side. From there Maico pumped on both lines for a leak test. The leak cart pumped down to its lower limits on the left line and there was no response when sprayed with helium. The right line would not pump below 2.5 x 10^-2 Torr and had a base leak rate of 3.3 x 10^-7 atm*cc/sec (this indicates a massive leak). Without spraying helium the leak cart responded and peaked at 1.9 x 10^-6 atm*cc/sec. Attached is a picture of the module indicating the line.

Yesterday the TBHT was ramped to 250 amp and the TGHT was ramped to 440 amps. Attached is the data from that run the strip tool that had this screen shot crashed but it can be recreated with the data. The TBHT ps was not reading back accurate results as such there are large steps in current or voltage or some instability for no apparent reason. In addition to this the ramping program is still not working so the ramping was a very manual process. The strip tool was left running over night, I have attached a screen shot of the the run. You will notice there are changes in vacuum that corresponds to changes in the TGHT and the TBHT voltage. Anders and myself used the archiver to plot the data with TS6 (TS3 would be better and I will have it added to the achiver), the changes in voltage and vacuum match perfectly with the compressor coming on and off. This should be investigated and possibly the temperature range of the cycling of the compressor reduced.

TM#3 with NiO#2 electrical check at conditioning station under vacuum, see pdf for details.

TM#4 with SiC#29 electrical check post beam see pdf for details.

 The filament on IG1 for TM3 was replaced by myself and Edi. The old filament did not appear to be damaged but the controller claimed it was. The current gauge on TM3 is a single filament, ideally it would be upgraded to a double.

 The roughing pump for TCS was started at ~3:00 and the turbo's turned on at ~4:00. This is the minimum time for the module to pump down.

Travis Cave wrote:

Results of the various electrical checks done on TM#3 while at the hot cell since the 27th of September. View PDF for the details.

 There was also a leak check. There was some water remaining in the HS line but once removed the leak cart pumped down to 0.0 x 10-4 Torr and the leak tester was at the bottom limit. There was no response when sprayed with helium

 TM4 was move by myself and Grant. Move went smoothly, no hang ups.

TM#3 with NiO#2 has been move from south hot cell to the conditioning station.

Results of the various electrical checks done on TM#3 while at the hot cell since the 27th of September. View PDF for the details.

 Yesterday TM3 had the TGHT current raised to 160 amps and the TBHT raised to 200 amps. At this power the TGHT showed typical results in that vacuum was affected and the increased voltage as the target increased in temperature. The tube heater on the other hand did not change voltage or show a change in vacuum. As a result it is believe there is a short somewhere in the module. I have attached a screen shot of the strip tool and the raw data.

TM#3 with NiO#2 has been moved to the south hot cell from the conditioning station.

Bevan Moss wrote:

The first attempt at HV conditioning of TM3 with the new source tray and NiO#2 target installed. Conditioning so far has been very slow, with the current increasing quickly to a maximum of 400uA. Voltage in these cases was lowered until the current was below 200uA. Attached is the raw data. It appears the source tray and target are conditioning just there is either something burning off or there is localized poor vacuum.

 Attached screen shot. Vacuum was around 8.3 X 10^-6 on IG2 (which is in the diagnostics box)

 Following the helium pressure test Don attempted to connect to the RGA via the network. He was unable to do so. This scan was desired so a pre and post water scan could be compared to indicate if there was any leaking. It has been decided to carry on as the HV and HP tests are of greater importance. Don will continue to investigate the RGA. Travis inspected from the conditioning station roof and determined that the RGA is getting power.

 The first attempt at HV conditioning of TM3 with the new source tray and NiO#2 target installed. Conditioning so far has been very slow, with the current increasing quickly to a maximum of 400uA. Voltage in these cases was lowered until the current was below 200uA. Attached is the raw data. It appears the source tray and target are conditioning just there is either something burning off or there is localized poor vacuum.

 The water pumps for the conditioning station were turned on at ~11:45. It took longer to start the conditioning station as the air from the leak test had to be bled off and the make up water tank refilled. The valves on the water supply line were closed slightly to make up for the fact the water cooled power supply has been removed. DIF2 was installed by Maico so we can measure the flow in the primary side.

Bevan Moss wrote:

September 24  After the manipulator repair Maico installed the NiO#2 onto the target module. Once connected I completed a leak test on the HS line with Isaac. The leak testing cart would not pump down originally (something wrong with the cart) but eventually it did start to work. The cart pumped to its lower limits and did not respond even with the module was flooded with helium. A electrical test was then conducted by myself and and Don Jackson (see attached). During the standard test the Target to Anode and to 60kV common read lower than expected at ~47Momh @ 1kV. Also of note during the conductance check the measurement from c-d was low at 1.82 mohm. 3  additional tests were completed 2 of which were coil to common (both sides). The resisance was measure at 47 ohm with the megger and 1.32 Kohm with the uohmmeter. The coil lines lines were also measured to get and indication of the resistance of a copper line. These lines were measured while they were not jumpered both the coil + and coil - measured 5.73 mohm. A meeting with Lia and Friedhelm was held and and the decision was to move the module and test it in the conditioning station. Fingers crossed that the module will still work. Sept 25th Maico finished installing the cover today for the module to be moved. Other elogs cover the other activities for today.

 Also of note the turbo pumps were started on the conditioning station around 1:30. Don and Travis completed and electrical test, see other elogs. When attempting to start IG1 the controller indicated there was no filament, this gauge only has 1 to start. It will have to be replaced when the module is next vented. In addition to this it appear the PNG1 controller has failed again. I have emailed Dimo to see if we can get one to test. The img100 is new and different cables have been used. All 4 options for connections were also tested in case of a wiring mistake.

maicodallavalle wrote:

TM3 has had all of the water lines pressurized with Helium and the Helium Leak detector was connected to the turbo pumps. There were no leaks detected.

 While pressurizing the lines it was found some of the lines had water in them. It is unknown where this water came from. Perhaps David connected the conditioning station last time it was in? Lines that were free of water were A, B, C, and window The leak detector pumped down to 4.0 x 10^-3 Torr and the leak rate was 1.4 x 10^-9 atm-cc/sec, there was no response during the leak test and the leak rate continued to decrease during the test.