Paddle wheel signal was tripping proton beam in ITW. Valved off ITE dump to divert flow to ITW. Field around valve was about 600 uSv/h

 The cleanup of the ISAC Target Hall crane and installation of the new SICK laser which replaced the IBEO laser for the EW crane position was completed on Aug 03 2023.

The clean up tasks which were completed: (Removal of tape viewing camera, Removal of tape, Installation of extension cord, Consolidation of power supplies for the lasers and removal of old laser) 

Currently power bar is still present to act as an extension cable. This will be removed when 2m extension cord is made and put in next target exchange cycle.
   

The installation and testing of new SICK Laser:

1. Calibration points were taken at the 4 corner limits of the crane. North South and East West positions were recorded.

2. Crane was parked at the ladder access position and mounting bracket was machined and installed.

3. A new cable was made and installed for the SICK laser. Continuity test was performed from the control room and crane to ensure pinout of the laser worked with existing serial communication setup in the control room PC.

4. The feedback values from the new SICK laser and old IBEO laser were compared to determine that a calibration offset of 0.06m was needed in the Laser Position Feedback program.

5. Laser Position Feedback program was re-compiled to communicate with 2x SICK lasers with the calibration offset value included in the EW feedback position. (Laser Crane PositionDlg.cpp)

6. Calibration points were taken at the 4 corner limits of the crane again with the new Laser. North South and East West positions were recorded.

There was less than 0.1% variance between the new laser and old laser which is well within the tolerance of the lasers themselves. It can be determined that it was properly calibrated.

Monday, December 08, 2014, 14:00: Dan M and Anders connected the water supply to circuit D and installed the module cover.

Monday, December 08, 2014, 14:50: Circulating water on circuit D. IG1 vacuum stable at 3.1E-7 T. No response on mass 18 on RGA

Monday, December 08, 2014, 15:30: Test TGHT and TBHT PS. Can be switched on, but set points need to be corrected.

Monday, December 08, 2014, 16:11: Started CHILLCP2

Monday, December 08, 2014, 16:26: Stopped CHILLCP2

Tuesday, December 09, 2014, 09:02: Started CHILLCP1. TS5 at 31.5 C

Tuesday, December 09, 2014, 09:33: Stopped CHILLCP1. TS5 at 17. 1 C

Tuesday, December 09, 2014, 14:54: Tested TGHT to 600 A and 2.05 V (local read back). EPICS read back and set point is not correct. Circuit resistance ~ 3.4 mOhm.

Tuesday, December 09, 2014, 15:14: Tested TBHT to 272 A and 0.97 V (local read back). EPICS read back and set point is not correct. Circuit resistance ~ 3.6 mOhm.

Tuesday, December 09, 2014, 16:01: TGHT and TBHT switched off.

Wednesday, December 10, 2014, 08:30: TGHT and TBHT power supplies cannot be run with TS5 > 25. Bypasses/Forces not implemented. Waiting for controls.

Wednesday, December 10, 2014, 10:44: Water is stable on RGA, however N, O and Ar shows repeated short term spikes of ~4x magnitude. Spikes are also visible on IG1

Vacuum stable over night.

Thursday, December 11, 2014, 08:22: Starting CHILLCP3. TS5 at 33.1 C, TBHT at 30.2 C

Thursday, December 11, 2014, 08:58 : Staging enabled

Vacuum stable over night.

Dave M corrected scale of TGHT and TBHT.

TS5 forced

Lost water in expansion tank over the weekend. See other e-log entries regarding the water leak and fix. Vacuum stable over the weekend.

Monday, December 15, 2014, 13:49: TGHT and TBHT PS at 600 A and 270 A

Monday, December 15, 2014, 14:06: TGHT to 700 A

Monday, December 15, 2014, 18:03: Autoramping down at 5 A/15 s

Monday, December 15, 2014, 18:26: TGHT and TBHT at 0 A. TS5 is at 35 C

Vacuum stable over night

Tuesday, December 16, 2014, 08:07: TGHT and TBHT to 700 A and 270 A

Tuesday, December 16, 2014, 09:00: Stopped MP2. MP3 tripped. TGHT and TBHT tripped.

Tuesday, December 16, 2014, 09:05: started MP2, TGHT and TBHT

Tuesday, December 16, 2014, 16:21: TGHT to 600 A. Will leave both TGHT and TBHT on over night to keep the water warm.

Vacuum stable over night. TS5 at 37.5 C TBHT return at 34.5 C

Wednesday, December 17, 2014, 08:15: TGHT to 750 A

Wednesday, December 17, 2014, 08:35 : TGHT to 800 A

Wednesday, December 17, 2014, 16:09 : TGHT to 700 A. TS5 at 40 C TBHT return at 37 C

Vacuum stable over night. TS5 at 39.3 C and TBHT return at 36.2 C

Thursday, December 18, 2014, 07:54: Starting CHILLCP1

Thursday, December 18, 2014, 08:34: Stopped cHILLCP1 TS5 at 20 C

Thursday, December 18, 2014, 09:07: TGHT to 800 A

Thursday, December 18, 2014, 16:10: TGHT to 700 A

Vacuum stable over night. TS5 at 39.0 C and TBHT return at 35.9 C

Friday, December 19, 2014, 08:17: TGHT to 800 A

Friday, December 19, 2014, 11:54: TGHT to 650 A. TS5 at 39.9 C 

Vacuum stable over the weekend. TS5 at 38.4 C and TBHT return at 35.4 C

Monday, December 22, 2014, 08:31 : Started CHILLCP3

Monday, December 22, 2014, 09:30: Stopped CHILLCP3 

Monday, December 22, 2014, 10:08: TGHT to 800 A

Monday, December 22, 2014, 16:25: TGHT to 700 A

Vacuum stable over night. TS5 at 38.4 C and TBHT return at 35.3 C

Tuesday, December 23, 2014, 08:16: TGHT to 800 A

Tuesday, December 23, 2014, 13:10 : Starting CHILLCP3. TS5 at 39.5 C and TBHT return at 36.4 C

Tuesday, December 23, 2014, 13:14: TGHT and TBHt to 0 and off. 

Leak check found no leaks on Service Cap

Tuesday, December 23, 2014, 14:14 : Stopped CHILLCP3

Tuesday, December 23, 2014, 14:20: RGA filament off

Tuesday, December 23, 2014, 14:23: Stopped MP2 and MP3

The blank off with the o-ring has been removed, manipulator fixed, circuit D water block sealinhg surfaces cleaned and blank off with c-seals installed and torqued. Leak check will occur shortly.

NOTE: If there is a problem with the chiller unit (ie Fault 1 or Fault 2), a power cycle may reset the VFDs for the fans and clear the problem. To do so it is necessary to wait long enough for the VFDs to power off completely. The display will first start to flash before going dark. Wait another few seconds before powering the system back up. The chiller unit is located on the ISAC I Penthouse Roof.

A service tech from Daikine was on site today and has cleaned the chiller unit. In the process he also cycled the power which returned the operation back to normal. The tech provided us with manuals for the VFDs. These can be consulted on DocuSharefor looking up error codes.

Fault 1 refers to unit 1 and Fault 2 to unit 2.

 will be performed Tuesday October 6th

Tuesday, October 06, 2015: Maintenance re-schedlued for Wednesday October 7th

A contractor on site today for chiller maintenance. CP2 and CP3 circuit is leaking and shall not be used. CP1 can still be used. The contractor will contact Plant Group with a quote for repair and upgrades.

 ESC came today and "repaired" the chiller. There was something wrong with the VFD controller. The were able to get it to start and run correctly again but were not able to recreate the problem. At this point it appears that it has magically disappeared. 

 During Testing it was noticed that Fault 2 was indicated and one of the compressors would not run. Fault 2 does not indicate what the issue was and during inspection nothing could be detected. It had something to do with TCS:CHILCP3 and possibly CP2. CP1 could still be operated and was controlled manually to keep the temperature in the correct range. This was not required but it does affect the conductivity. The main power switch on the chiller unit was turned on and off and the fault was cleared. As far as I know this indicated either a freeze protect, flow, or refrigerant pressure fault. I will ask for TCS:TS6 and TCS:DIF2 to be added to the archiver so this can be further investigated in the future.

TM4 has developed 4 leaks so far:

1. Line B - seems to be solved with an indium gasket (some testing already done)
2. Line D - seems to be solved with an indium gasket (some testing already done)
3. EE - indium gasket installed, preliminary tests are good
4. Window cooling line - David found with 70 psi helium, leak detector response went from 3E-7 atm.cc/sec to 4E-4torr atm.cc/sec in 1 min and stayed there. When water was put through the circuit, there was an initial vacuum increase to about 1E-6, then a couple hours later it began to fall and has been falling for ~14hrs, now in the 7E-7 range for IG1.

Testing indium seals on lines B, D, EE. No repair has been done for window line. Ramping heaters to TGHT=450A, TBHT=200A. Everything behaving normally.

Wednesday, ramped up BIAS, EZL and EE to 36kV, 17kV, 1.5kV. Sparking at about 1 spark per 20 - 30 mins. Bias current somewhere between 66uA and 78uA, varying with the chiller ON/OFF.

Thursday morning around 2am everything tripped off. No spark visible on strip tool, seems this is from an increase in the window water leak. Vacuum recovered on its own and heaters were ramped back up.

 Due to problems with the regulating valve WPV1, the VFD (Variable Frequency Drive) for the pump has been programmed to do a slow (2 min) ramp up. WPV1 has been bypassed and left fully opened. Work was done by Dave Morris

 John Chow configured TCS to cathode bias mode (IRH1538). The anode P/S is in positive mode.

I had changed all old induction coils for flow sensors in ITE .I checked all ITE water signals on control boards in electrical room.They are all very stable and constant.All ITE inductions coils work fine now.

3 damaged 24VDC plugs of TP solenoid valves are replaced. Inspected other plugs. All of them are in good condition now.

I changed ITE dump water circuit flow wheel due to its poor performance. The new flow wheel works fine. The signal on electrical board is strong and constant. One shielding block on ITE was moved out for the job, and it has been moved back after the job.The ITE is ready to take proton beam. Travis was with me when i did the job.

On 26/Sept/2022

Chad disassembled the right operator side manipulator, and noticed that gears in the handle were quite tight especially when compared to the left operator side manipulator. 

Once a dry grease was added, and the handle reassembled all seemed to be in working order.

There was noticeable wear on a shaft and Chad has suggested to order some spare parts for the wrist and handle. 

On drawing ITA6008 for the Encole 0.5" ceramic standoffs there is a note to match pairs of ceramics to within +/-0.001". This step was missed on the current build of TM2 source tray (ceramics were not measured).

Measured the lengths of the rest of the ceramic standoffs in inventory and they range from 0.5035" to 0.4950" in length. The ceramics have been sorted by length and grouped into bags.

Decon/removal of large solid waste was performed on Wednesday November 18th."Hot" activated items included containment box cover from TM2, Febiad coil line remnants from TM4 (the hottest ends were previously cut off and disposed of), some target conductor bolts, steerer plugs from TM2, target material remn.

Drum containing these solid items is 2.5mSv/hr at 1/2m.

Drum is stored in the north hot cell temp.

Compressible waste will require another drum.

Swipes were taken of the window... 170k counts per minute of cont.

Cell (table) was systematically cleaned with a swiffer and resulting piles of contaminated waste placed in pail with spent Ta target.

 The base card in the canbus BIAS module was determined to be faulty. Dave Morris removed a card VECC to repair the conditioning station.