high voltage conditioning was carried out over the day up to 24 kV. i will leave it at 20 kV over night. Current is at 22 micro Amps, heaters off.

vacuum: IG1 7.7e-7

IG2 4.07 e-6

IG1sS 2.2 e-6

The high voltage was sparking several times during the night. It may be correlated with the cycling of the cooling water temperature and conductance.

vacuum levels at 11:00

IG1 7.5e-7 T

IG2 3.9e-6 T

IG1s 2.0 e-6 T

heaters have been ramped up to TGH 580 A, TBHT 250 A,

anode 100 V 5.3 mA, coil 50 A Faraday cup 50 nA bias 20 kV EL 6 kV

vacuum

IG1 7.9e-7

IG2 4.5e-6

IG1s 2.2e-6

All power supplies tripped on high conductivity of the cooling water < 5 MOhm, It is not clear if this was caused by a spark or vice versa. According to the strip tool for this signal the resistance of the water went up. There might be a fault in this signal. I do not have permission to force this signal so I keep the heaters off. We should revisit the interlock conditions, this signal should not be included in the interlocks for the heaters. Both target and tube seem to be still o.k. As I do not want to destroy the target I keep the heaters off and restart the high voltage only.

vacuum readings before stopping

IG1: 7.4e-7 T

IG2 3.8 e-6 T

IG1S 1.95 e-6 T

 David and I disconnected entrance module in ITE by following the procedure # 190510. And, the yoke was installed and left on for remote handling later. 

 ITE water flow wheels and coils are replaced. Wheels and coils on Oven, Tube, HS, EE, MSP, Febiad coil, containment box window, dump, dump plug, 2A window, and tank return circuits are replaced with new parts.

 David and I re-connect Entrance module at ITE after the monitor been replaced at SHC. 

 Anders and I prepared ITE high voltage test in April 30 ( Friday morning), The MAA is locked for this.

 TM4 electric check with new target was done by David. A pic attached here for ref.

 TM4 with a new target was moved back from NHC to ITE and reconnected at pit. The 5 shielding blocks were installed as well. Copies of connection checklist are attached here.

 TM2 been connected with new target C#3 in ITW. 

 the test was done when TM2 sit on NHC.

 TM4 was disconnected and moved to NHC. 

 the tests were done when TM4 was on NHC. see attached photos please.

 the module with target UC#35 was connected in ITE and being pumped down.

 the five shielding blocks have been moved from ITW to ITE. 

 the module TM2 with target C#3 was disconnected at ITW and is being remoted moving to SHC.

 An electrical check of TM2 with target UC#36 and no external connections was finished at SHC. 

 TM2 with target UC#36 was connected at ITW.