Conditioning by ISAC operations

Saturday, September 24, 2016, 11:15: RGA on for heater conditioning. (kept off during HV conditioning)

Sunday, September 25, 2016, 07:44: TGHT and TBHT voltage jumps during heater ramping. Likely contact between target and heat shield. Contacted ISAC operations and asked to abort ramping at current values. TGHT/TBHT 500 /270 A

Monday, September 26, 2016, 08:22: ISAC operations resuming ramping to 550 A. Corrected TGHT voltage at ISAC TS was ~6.2 V at 580 A. Expected voltage at TCS would then be 6.2 + (3.4+2.9)E-3*580 = 9.9 V. Limit set at 9.5 V.

Monday, September 26, 2016, 09:09: Increased TGHT voltage limit to 9.6 V to allow it to reach 550 A.

Monday, September 26, 2016, 10:17: Voltage limit increased to 10.2 V which allowed the current to go to 575 A

Tuesday, September 27, 2016, 08:08: Conditioning complete. Ran at 575 / 270 A and 47 kV for about 1 hour. Conditioned cold to 49 kV.

The bundle of electrical checks, first one is the Iglis that failed, the second is the everything passed at the hot cell and the third is a the conditioning station under vacuum.

All TCS and TM4 turbo-pumps were started yesterday. Overnight pumping down is good so far.

Chad and I leak checked the TM4 HS line after new target installation. base leak rate:0.0Xe-9 atm.cc/sec.  No response on LD during the leak check. The line is leak free so far. It will be helium pressurized at TCS  late.

A silo and blue steel frame are removed out of TH this morning. They are transferred  through ante room, and moved to experimental hall TM assembly area for a long term storage. Swipes are done on the silo and frame before and during move. No contamination has been found .

TM4 has been disconnected in ITE. No water line purge on HS and 3 water circuits are looped after disconnection. The HALCW system resistivity is stable before and after this disconnection.

TM#4 has been moved from the east target station to the south hot cell

Post new  target hall Excel sheet schedule for beam schedule 131. See attachment 1,2

Post new target hall  MS project schedule for beam schedule131. See attachment 3,4

The sheet metal panel covering the NHC/SHC feedthrough port was removed today using a slide-hammer to pull out the concrete anchors (this oversized panel would have interfered with the NHC partition wall).  50cpm was found on the inside of the panel, 100cpm on the NHC side lip of the feedthrough, and 350cpm on the face of the shielding bricks in the feedthrough.  Various dimensional measurements of the feedthrough were taken which will be added to the partition wall Solidworks model (IRH1609).  The panel was bagged for disposal and a temporary 20"x20" panel was put over the feedthrough and secured with duct tape.  A permanent panel with anchored supports that is compatible with the NHC partition wall will be designed and installed at a later date.  A swipe of the NHC walls and floor picked up 30cpm after completion of the job.  

TM#3, no target, has been moved from the conditioning station to the north east silo.

 TM3 is disconnected at TCS and ready to be moved to silo.

Tuesday, September 12, 2016, 10:00: RGA on

Tuesday, September 13, 2016, 13:52: Source on

Tuesday, September 13, 2016, 13:55: BIAS / EL at 10 / 5 kV

Tuesday, September 13, 2016, 13:59: BIAS / EL at 18 / 9 kV

Tuesday, September 13, 2016, 14:06: BIAS / EL at 20 / 10 kV. Minor sparking

Tuesday, September 13, 2016, 14:25: Sparking at about 1 spark/min for the last 10 min

Tuesday, September 13, 2016, 15:38: ~10 sparks for the last 60 min.

Tuesday, September 13, 2016, 15:41: BIAS / EL 22 / 11 kV

Tuesday, September 13, 2016, 15:57: Heavy sparking at 24 kV. Lowered to 21 kV. EL at 12.5 kV

Tuesday, September 13, 2016, 16:00: BIAS / EL at 22 / 12.5 kV

Tuesday, September 13, 2016, 16:05: Trip on resistivity caused by spark

Tuesday, September 13, 2016, 16:07: BIAS / EL at 10 / 5 kV

Tuesday, September 13, 2016, 16:14: BIAS / EL at 20 / 10 kV

Tuesday, September 13, 2016, 16:25: BIAS / EL at 22 / 11 kV

Tuesday, September 13, 2016, 17:00: Sparking at about 1 spark/min for the last 30 min

Tuesday, September 13, 2016, 17:02: Source off.

Wednesday, September 14, 2016, 08:22: BIAS / EL at 20 / 10 kV

Wednesday, September 14, 2016, 08:33: BIAS / EL at 22 / 11 kV

Wednesday, September 14, 2016, 08:35: Trip on resistivity caused by spark

Wednesday, September 14, 2016, 08:38: BIAS / EL at 20 / 10 kV

Wednesday, September 14, 2016, 08:41: BIAS / EL at 21.5 / 11 kV

Wednesday, September 14, 2016, 08:45: BIAS / EL at 22 / 11 kV

Wednesday, September 14, 2016, 09:06: Sparking at about 1 spark/min for the last 20 min

Wednesday, September 14, 2016, 10:17: Sparking rate somewhat reduced. BIAS / EL at 23 / 11 kV

Wednesday, September 14, 2016, 10:23: BIAS / EL at 24 / 12 kV

Wednesday, September 14, 2016, 10:31: BIAS / EL at 25 / 12 kV.

Wednesday, September 14, 2016, 10:32: Trip on resistivity caused by spark

Wednesday, September 14, 2016, 10:36: BIAS / EL at 20 / 10 kV

Wednesday, September 14, 2016, 10:40: BIAS / EL at 23 / 12 kV

Wednesday, September 14, 2016, 10:51: BIAS / EL at 24 / 12 kV

Wednesday, September 14, 2016, 10:57: BIAS / EL at 25 / 12 kV

Wednesday, September 14, 2016, 11:01: Heavy sparking at 25 kV (>15 /min). Trip on resistivity caused by spark

Wednesday, September 14, 2016, 11:10: RGA off.

After blue insulators replacement, TM3 service cap are leak checked. LD base leak rate 0.0xe-9 atm.cc/sec. I sprayed lots helium on all blue insulator seals. No leak has been found. Double checked them again, and got same result. All other seals on top of TM3 also have been checked. They are leak free. OVEN, TUBE, MSP, COIL, and EE water lines are pressurized with 70 psi helium for 3minutes each. They are good also.

start of roughing now.

 start of TCS and TM3 turbo-pumps. Everything is good so far.

All TM3 blue insulators except Gas,EL, and 60 KV common  on top of the module have been replaced with new designed insulators. The new blue insulator for gas line need to be modified to fit for the bent on the gas  line.   EL, and 60KV common blue insulators were replaced during last time TM3 refurbishment so they are relative new, and  not replaced this time. All seals related to the blue insulators are changed to new seals. The o- r-ing surfaces  for o-ring 221 inside the  new insulators  are rougher than old parts. The module top need to be leak checked.

TM#3 has been moved from the NE Silo to the conditioning station.

 Measurements were taken today of the NHC north/south wall gap at the location where the NHC/TCS partition wall will be installed (43.375" from the NHC west wall).  A HILTI PD40 laser range meter was used for the measurements.  They were taken at 10", 34", 62", 90", 118", and 142" from the floor which matches the top of each cross-beam.  The results are below:

10" from floor:  102.44"
34" from floor:  102.40"
62" from floor:  102.48"
90"  from floor:  102.63"
118" from floor:  102.28"
142" from floor:  102.24"

Based on these results a partition wall plate width of 102.00" will be used for the bottom two plates, and 102.25" for the upper three plates in order to keep the gap on each side approximately 1/8"

5shielding blocks have been transferred from ITE to ITE. ITW is configured to take proton beam.

  ITW turbo pumps  have been started.

TM#2 with Ta#49 has been moved to the west target station from the conditioning station.