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

 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.

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 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.

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.

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.

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.

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.

Electrical check of TM#3 in the conditioning station under vacuum see attached PDF for details.

The module was checked electrically this morning before the module move. See the attached PDF for details.

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

The containment box cover has had all  the bolts installed and all bolts were checked with a mirror. TM3 has been raised and is ready for the last electrical  test before  it goes to the conditioning station.

 The right manipulator A-9885 Handle Cable Assembly has been repaired by Maico and myself. We repaired the manipulator following some verbal instructions from Chad on the modified repair strategy. This allows the repair to be completed without going into the hot cell. The instructions in the repair manual are very vague and can actually cause problems. For example it is best to pin the manipulator before completing any work. Other than that the work went smoothly with the exception that the counter weight hangs up on the manipulator occasionally and can cause the cable to come off of the pulley. Also it appears that the left manipulator has had the cable installed incorrectly as it rides on the housing of the wrist.

Electrical check was done on TM#3 yesterday and again the coil lines to the 60kV common and the coil line to each other failed, as in they had a resistance. Everything else passed as showing an infinite value, all meggering was done at 1000V unless noted other wise. See attached PDF for details.

 September 20th

Today was a trying day. When attempting to make the water line connections for the window the VCR seal fell off several times. Each time this happens the seal becomes stuck at the bottom of the containment box. While trying to replace the seal the nut slipped down the line to the bottom of the containment box. When trying to recover said nut with the pick tool it too fell to the bottom of the containment box. Due to the design of the containment box the only way to recover the pick is to remove the containment box (several other attempts were made with no luck). Before anyone asks no the pick cannot be left in the containment box. When attempting to remove the containment box one of the bolts for the shutter panel stripped. I then found the stud removing tool and have successfully removed the bolt. Isaac is now going to finish removing the containment box and that will be as far as we can get today. 

September 22nd 

- containment box removed
- dropped tool and seals removed from box
- containment box reinstalled
- window water lines done up
- target installed (with difficulties detailed below)

The threads for the middle tube heater connection (circuit D) appear to be damaged and the bolt in that location cannot be fully screwed in.  The bolt was removed and showed damage to the threads.

September 23rd

A leak check of the window line was completed (https://elog.triumf.ca/TIS/RH-ISAC/459) and several electrical checks of the coil with and without the target in place. The values for the electrical checks continued to fail the open circuit criteria, an elog on the testing will be reported tomorrow. Isaac and Maico removed the target so that the helicoil could be repaired. The helicoil was repaired by chasing the threads with a modified tap but it was noted during the repair that the bolt holding the line in place and come loose and was no longer clamping the tube heater and ceramic tight. The target was also checked electrically to confirm that the coil was not shorted to common. It showed a open circuit resistance with a ohmmeter.

It was then attempted to re-install the target but as the target was being lifted a cable for the tong motion schematic broke (A-11682). 

Currently the target is sitting in the hot cell with the manipulator still broken. We are attempting to find parts and instructions as to how to replace the cable.

This morning, Bevan and I leak checked window circuit on TM3 at SHC after containment box was installed. It took about 20minutes to pump down the circuit to  0.0xE-9atm.cc/sec. Bevan sprayed helium on both VCR joints and a final splash. No response had been found on leak detector.

September 18th

The wiring harness was completed by Maico and Travis today (see pics) and was installed into the target module. During installation the bracket went on with ease. The junction box appeared to be hung up on something but did engage eventually. The plug for the collimator is not quite long enough for the manipulators to install completely. I was only able to get it to just engage by sneaking the manipulator in from the shutter side and then pushing on it with a long rod. The wiring for the collimator is several inches too long but does not interfere with anything. The remote installation of the wiring to the IMG gauge was easy but there at least 1 foot of extra wire and with the thicker gauge it has a mind of its own. I was eventually able to wrap the wire under the table before so it will not interfere with anything. The module side junction box bracket was not clamped to the table I was able to do up one bolt but other one was blocked by the new steerer strain relief. There is no requirement for both to be done up.

September 19th

Travis completed and electrical test this morning and it was found that coil 1 touches coil 2 touch each other very slightly. By inserting a piece of cardboard between the closest water block and the lines we no longer in contact and passed the test. Once the cardboard was removed the lines remained separated but if touched slightly they would spring back into place and make contact. There was some debate as to if we should make a custom part to separate the line or if we should attempt to tweak the lines. I decided that it is known that a very small change in the position of the module will cause separation between the lines, that we should attempt to tweak the lines. I braced the lines with one manipulator to prevent loading the ceramic while Maico "tweaked" the line. The line was successfully moved to cause separation. Maico and I then completed a visual inspection of the remaining water blocks and noticed that the ground electrode cooling lines are estimated 1/8" away from one of the module side coil lines. All other places that can easily be inspected appear to have enough clearance.

Travis and Don then completed an electrical check again (https://elog.triumf.ca/TIS/RH-ISAC/457). This module still failed the test but as noted not due to continuity rather lower than infinite resistance from the coil to coil and positive coil to 60kV common. This indicates that there is dirty or failing insulation that is either from the fiber glass wrap or something within the service tray. From inspection from outside the hot cell the best guess as to where this is happening is just before to after the exit of the water lines from the service tray but there is no way to confirm this.

Although the module may be able to run for a period of time with these resistances the insulation may continue to break down and there is the risk that during a module move the lines may shift and touch again. This combined with the known HV issues of TM3 paints a dark picture of the service tray.

Friedhelm and Lia have been advised of these recent results and have decided to continue with the installation of the target and conditioning of the target. Should the module be able to operate and extract beam it will be installed in ITE. Friedhelm also came for a visual inspection of the module and agreed that the issue is on the module side and that the lines are too close to tell exactly where the issue may lie. The possibility of separating the the blocks with further insulation was discussed but there is limited area that this can be completed remotely. In addition to this there is no indication that further insulation/bracing will improve the problem and there is considerable risk that it could make the issue worse.

Installation of the containment box started this afternoon and is completed other than the tightening of the window VCR joints. 

Electrical check of TM#3 with no target was performed and it failed. There is a 135M Ohm short between the coils and a 165M Ohm short between the coil and 60kV common.  All other circuits passed they were infinite in value.

The wiring harness for TM#3 was made and a continuity and megger test was done on it and it passed, it has since been installed into the hot cell and placed on the module.

 The containment box has been removed. Tomorrow the wiring harness will be installed.

Leak checked TM4 coil1 in SHC with Isaac . The leak detector only can pump down to 1.5xE-7 atm.cc/sec. The leak detector got the response once the helium valve is open, not even close to the leak area. The leak detector got a very big response when the helium probe was put close to the coil terminal block on target front side and spray helium for 2 clicks. The leak detector got a small  response when the probe was put close to water block area and spray helium for 2 clicks. The leak is located on the front target side coil line but not from water blocks. The leak is too big to be further pin pointed by this method. See attachment

I leak checked TM3 water lines at CS with 60 psi and 80psi helium. The base leak rate is 5.0xe-9 atm.cc/sec. Each circuit 3 minutes helium pressurizing for each time test. No any respose had been found on leak detector during the test. See attachment