TM2 has been disconnected in ITE. The bias jumper between U and T was burned out during the last beam time.

TM2 was moved from South Hot Cell to ITE. ZrC #8 target.

TM2 has been connected in ITE. turbo pumps have been started. ITE  and TM2 vacuum are good.

Ramped voltage on TM2 up to 30kV with no problems. Bias current is at 29uA, same as original TM2 bias current (see archiver for ITE June 15th, before protons) and similar to 31uA right after protons went off on Aug. 6.

TGHT=0A

TBHT=0A

BIAS V=30kV

BIAS current = 29uA

EZL V= 15kV

EZL current= 51uA

EE V= 1kV

EE current= 0.952mA

IG1= 8.6e-7

protons=0

This seems ok despite poor electrical checks showing 300 MOhm resistance between HV and ground. These values indicate a resistance of 1 GOhm. Let's see what happens when protons are on.

For future (optimistic) reference when testing protons:

BIAS=35kV, 35uA

EZL-17.5kV, 60uA

BIAS=38kV, 37uA

EZL=18.5kV, 63uA

Ramping up HV to ~30kV, encountered problems and had to drop back to 28kV. No response on IG1 or anything else during sparks. Lots of charging-type behaviour on the bias current. Protons at 55uA

Tuesday, September 17, 2019, 02:02 : 15 mins with only 1 spark at 30kV so increased the bias

Tuesday, September 17, 2019, 02:31 : 32kV. Current unstable

Tuesday, September 17, 2019, 02:41 : Current continues extremely unstable but not much sparking....

Tuesday, September 17, 2019, 02:53 : Proton beam trip initially settled the bias current down, but then current began climbing pretty steeply with protons still off

Tuesday, September 17, 2019, 03:28 : Protons dropped to 40uA from 55uA, Bias current is much more stable and no sparks for 25mins

Tuesday, September 17, 2019, 03:36 : Raising voltage easy to about 33.5kV then instability and sparking similar to around 31kV at 55uA p+

Tuesday, September 17, 2019, 04:45 : Lowered protons to 25uA and no sparks though the current is not stable

More things but forgot to write them down. Spreadsheet attached.

1 Jumpers between 60KV common and FEBIAD lines were connected in an unusual way.  This should of had no impact on the ZrC run but would have to be corrected for any future FEBIAD runs.

2 Feedthrough U was mislabeled (label has been removed)

TM2 has been moved from the Conditioning Station to ITE with Ta#59 target.

Tm2 with Ta 59 has eben connected in ITE. Turbo pumps are started. See checklist

See attachment

TM2 was moved from the Conditioning Station to ITE, with SiC#38 target.

TM2 was connected in ITE 12th Nov. attach checklist

TM2 has been connected  in ITE.  All turbo-pumps are started.

ITE water  signal interlock   check is done.  Everything is good. It is a annual check we do in winter shut down time.

Leak check on ITE vacuum vessel is done. LD base leak rate 0.0XE-9atm.cc/sec. base pressure 0.0Xe-4torr. Sprayed helium on all ITE primary and secondary vacuum vessel seals(including TM2). No leak . Also,70psi helium  pressurized TM2 waterlines inside the module for each circuit 3 minutes. No leak on all operating TM2 waterlines.  

Using the camera,  Frank and I inspected the broken blades in vacuum duct bending section. We are pretty sure some of  the broken parts are fallen into  bottom of entrance module and vacuum vessel since the broken pars are over on the edge of bending section. The blades rotated at high speed. Basically, They were shoot to the duct opening when they were broken from the pump. Frank and I carefully swiped all broken parts  from the edges  back to center of duct first. Then, We use vacuum cleaner sucked all broken parts out of the entrance module. We can see lots aluminum dust  during the clean up. This kind of aluminum dust also could  fallen down to bottom of module and vessel.  After clean up, We inspected duct with camera. We can see all broken pieces and dust are cleaned out.  The removed broken pieces will be stored with broken pump when the vessel bottom clean up is done.

ITE bias test is done to 48KV. No spark. We can not raise bias above 48KV. It looks like we have a current limit issue on control system when testing above 48KV.  John Cow checked current limit on PS locally. It is set to 8mA which is much higher than the test current. Isac operator issued an e-fault to control group.  

 John Chow did a local test on PS. Everything works fine.The problem is on control system. We have a 48KV voltage limit problem on control system. We decide to end the test now. 48KV is good enough before this year mini-shut down. 

 The entrance module has been moved to the east station to the south hot cell for inspection from the turbo pump explosion.

The broken pieces in ITE entrance vacuum pit are vacuumed out.  At SHC, There are 4 pieces on module collimator block top,  wiring scanner top. Chad removed them out at SHC. Electrical check at module top is done by diagnostics group. Everything works fine.

 The east entrance module has been moved from the south hot cell back to the east target station.

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