SiC#30,ZrC#7,Ta#44,TiC#4, and Ta#41 have been moved from the spent target storage to the mini storage. See attached PDF for details of the orders of the pails in the mini vault.

On maintenance day Tuesday, the roughing of the target station could not go below 1.5 Torr. A brief troubleshooting on Tuesday was unsuccessful in determining the cause. Leak checking continued on Wednesday by David and Anders. A leak was finally found on the multi pin connector feedthrough due to the seal between the connector and flange on top of the nylon insulator. Upon re-tightening the connector, the leak could be stopped and the module pumped down to allow starting of turbo pumps.

 TM#4 with SiC#37 has been moved from the conditioning station to the east target station. A measurement was taken on TM#4 as it was being removed from the conditioning station, the location was on the side of the service tray access panel approx one metre away and the cover fully exposed, the reading was 750uSV/hr.

The spent UC#21 has been moved from the south hot cell to the spent target vault. See attached for details

Thursday, October 19, 2017, 14:20: EE configured for conditioning. HV cage locked up

Thursday, October 19, 2017, 16:46: BIAS / EL / EE at 45 / 22.5 / 0 kV

Thursday, October 19, 2017, 17:16: 30 min without sparking. Lowering to 0. Continue conditioning tomorrow.

Friday, October 20, 2017, 08:22: Resuming HV conditioning

Friday, October 20, 2017, 08:44:  BIAS / EL / EE at 45 / 22.5 / 0 kV

Friday, October 20, 2017, 09:48: No sparking. Continue conditionoing

Friday, October 20, 2017, 10:40: BIAS / EL / EE at 50 / 22.5 / 0 kV

Friday, October 20, 2017, 11:30: HV spark (at 52.5 kV) tripped TP2 and TP1s resulting in IG1S and power supplies tripping.

Friday, October 20, 2017, 13:50: Gelo is troubleshooting flickering on/off of ANODE, TGHT and TBHT power supplies.

Friday, October 20, 2017, 13:51: BIAS / EL / EE at 50 / 25 / 0 kV

Friday, October 20, 2017, 14:26: BIAS / EL / EE at 55 / 28 / 0 kV

Friday, October 20, 2017, 14:37: TP2 tripped on spark

Friday, October 20, 2017, 14:51: Gelo has determined there is a communication problem with the PLC on the HV platform. Troubleshooting continues.

Friday, October 20, 2017, 19:02: Troubleshooting did not succeed. Not able to control power supplies. Troubleshooting continue on Monday.

Monday, October 23, 2017, 09:00: After starting the TCS again today communication has been reestablished. Started heater conditioning.

Monday, October 23, 2017, 14:03: Heater ramping previously aborted and ramp down started due to ongoing PLC communication issues. TGHT and TBHT power supplies tripped on timeout around 13:45. Gelo will continue the troubleshooting.

Monday, October 23, 2017, 19:55: Switching off source after operating for 5 hours without any communication glitches detected (fiber optic communication cables swapped between HV platform and BIAS/EZL PLCs)

 Two minor chips in the main 60 kV insulators on the source tray was inspected today by Anders, Tom and Aurelia. The chips are small enough that they should not be a problem. See photos for details.

Chad and I leak checked TM4 HS line after new target is installed yesterday. No leak has been found. Also, I helium pressurized the HS line at TCS this morning. TM4 HS line is good on this test. The TM4 gas line configuration on TM4 top is leak check as well. No problem.

Source tray meggered today by Anders and Keith

GND - MSP OL @ 1000V
MSP - EE OL @ 1000V
EE - GND OL @ 1000V
4x Steerers - GND OL @ 500V

Steerer continuity verified from socket to steerer plates
(looking in the direction of the RIB, labeled top to bottom on sockets)

1 - Top
2 - Left
3 - Right
4 - Bottom

 TM#4 with SiC#37 has been moved from the south hot cell to the conditioning station.

 The results of the electrical check of TM#4 with SiC#37, see attached PDF.

 TM#4 with UC#21 has been moved from the east target station to the south hot cell.

Source tray is complete for brazing, gas line bracket is currently missing but can be made in parallel with tube bending operations.

Source tray water lines to be fabricated according to ITA6144 drawing set.

- Alignment between target mounting plate and steerer cone is holding within .002"

- Aluminum soldering jigs are installed in place of the ceramics with fasteners only torqued just past "finger tight".

 Field measurements were taken of the old source trays. The old TM#2 source tray had a minimum field value of 0.50 mSv/hr and a maximum of 1.18 mSv/hr through 360 deg of rotation. The box was rotated around three times and put back in the vault. TM#1 old source tray was also removed and measured as well the field values for it were a minimum of 0.52 mSv/hr and a maximum of 1.15 mSv/hr through 360 deg of rotation. The box was rotated around three times and placed back in the vault. In both cases the box was roughly one metre from the radiation monitor.   

Spare source tray build continued.

Initial alignment check in the morning:

- Target mounting plate target: Horizontal: .002, Vertical: -.002

- Ground electrode (bore) target, with un-clamped target: H 0.0 V -.003

- Ground electrode target (with target clamped): H: 0.0, V: .010

@14:10: sighting Master target position WRT sighting axis, calculated using the edges of the brunson target center circle edges calculated to center. Target circle is .02" in diameter.

- Master target mounted with slight finger torque.

- Front of master target, H .002 V -.002

- Rear of master target, H: 0.0 V: .005 (circle target is .020" in diameter)

- Rear of ground electrode target, H: .002, V: 0.011

@14:49: Replace mount plate target.

- Target mounting plate target: H -.001, V .001

- Ground electrode target: H .002, V .011 (rear target was rotated 90 deg from in the morning as a check)

@15:21 Steerer cone re-alignment.

- Undid the six screws holding the steerer cone and steerers to the aluminum flange and adjusted cone tip to RIB axis. The ground electrode bore was deemed not to be adjustable to the RIB axis with the current build order.

*Steerer cone assembly torque is 23 in-lbs

- Steerer cone target, H: .001, V: 0.0

- Steerer cone target, H: .002, V: .002 (after rotating target 180 degrees)

@15:30 Replaced target mounting plate target.

- Mounting plate target, H: .001, V: -0.001


Will go ahead and finish mounting components to mounting plate and final check the alignment after.

TCS  cooling polyurethane lines have been re-routed to solve to HV sparking issue on old configuration between lines and bais plate.  New re-routed system is tested to 70KV without spark. No leak has been found on new lines after the test.

ECO 4369, drawings and models IRH1715, IRH1716 have been issued and released for this job. Drawings and Models are located in PDM-ISAC1 -TCS polyurethane water lines re-route folder.

ITW is configured to take proton beam.

 HV was brought up to 70 kV for 1 h without sparks to test the new water installation.

The 4" PVC drain line in the ISAC-1 active sump was modified so that the drain pipe terminates below the low level water line of the automatic pump-out system.  This will prevent backflow of sump gasses into the SHC, NHC, or TCS space if the air pressure in any of those rooms are lower than the sump air pressure.  The details of the modification were specified by Mechanical Services Group, and the work was done by Paul Jensen.  This system is defined in drawing IAM19183.

 The NHC module port shield block (IRH1645) and the TCS vessel shield block (IRH1646) were installed yesterday in the target hall according to assembly drawing IRH1652.  No issues were encountered during installation.  Vacuum was pulled on the TCS and a leak check was performed on the shield: no leaks found.

David installed the new ball valve and connections for the SAS project module move ventilation. SASP0482. Drawing reference ISK5029B.