ITE TP4S was broken down last night . I stopped the ITE pumps and vented station with Argon this morning. Edi and I replaced the broken pump with a new pump. The ITE is under roughing now.

TM4 is connected in ITE. All ITE  turbo pumps are started. I will check the pumping down process tomorrow morning. Everything is fine so far.

TM4 are vented with argon and disconnected at CS this morning.

Electrical check of TM#4 with UC#10 from thursday.

TM#4 with UC#10 has been moved from the conditioning station to the east target station.

Helium pressure test on TM4 HS water line at CS is finished. 80psi helium no leak. 

TM4 is connected at CS. All turbo pumps are started. The pumping down is good so far.

Isaac and I leak checked TM4 HS line with new UCX target. The leak detector base LR 0.0xE-9 atm.cc/sec, base pressure0.0xE-4torr. Isaac sprayed helium  on both VCR connections(5 seconds each) and flushed helium around the target for 6 seconds. No response on leak detector.

TM#4 has been moved from the south west silo to the south hot cell.

SiC#30 in pail #117 has been move to the spent target vault and placed in spot 2C. See attached PDF for details.

TM#3 with no target has been moved to the northwest silo for storage.

ITE entrance module is reconnected in ITE.

ITE Entrance module has been moved back to the east station.

SiC#30 has been removed from TM3. A quick exam of TM3 source tray did not  yield any obvious signs of damage.

9 pin connector on the target showed the usual sparking/arcing marks.

Heat shield has been removed from the target. Inside of heat shield has some unusual marks on it and quite a lot of black deposits.

ITE Entrance module has been moved from the east station to the conditioning station.

Air leak was found at the Solenoid control valve located in the Pre-Separator & DB0 room.  The gasket between the solenoid body and its manifold block was broken, see attached photos. The gasket and solenoid body were replaced. Air was turned back on to IV5 (B/L gate valve) with no apparent air leaks. The gate valve was actuated open & closed from the control room seeing both limits successfully.

I turned off TM2 and CS turbo-pumps. TM2 will be moved from CS to silo tomorrow morning.

• TM2 installed in Conditioning Station
• Varian Leak detector connected directly to Target Module 2 Service cap.
• Vacuum draw in Target Station with both module turbo pumps
• Leak detector baseline normal (10^-4 Torr, 10^-9 Std cc/s He)
• Since no Source tray is installed, and tube heater supply conductor is blanked off in target enclosure, it was necessary to test both supply and return points.
• For each line tested, 80 psi He was connected, and waited ~2 min to for a response on the leak detector.
• Lines tested:
  • conductor D (tube heater), Supply -> no He response
  • conductor D (tube heater), Return -> no He response
  • conductor C (tube heater), Supply -> no He response
  • conductor C (tube heater), Return -> no He response
• Based on this leak testing, both supply and return lines of conductors C & D are leak tight under 95 psi He (80 psig He supply to vacuum)

TM#2 has been moved from the south hot cell to the conditioning station.

Target Ionizer tube cooling lines "C" and "D" in Target Module 2 were both leak checked at the Hot Cell.  The lines were both blanked-off.

Bill Paley was present with David Wang in the Target Hall, operating the leak detector.  Grant Minor and Anders Mjos were present with Chad Fisher at the Hot Cell.

The "D" circuit was already blanked off with a copper blank containing silver brazed stainless steel inserts and indium plated inconel c-seals.

The "C" circuit was already blanked off with an aluminum blank and rubber o-rings.

The cooling lines are indicated in the attached screencapture from ITA6021 Rev .14, and are also labelled in the attached photo.

The "D" circuit was checked first, starting at around 12pm.

1.  The helium flow was tested by blowing dust on the work table.

2. The base leak rate on the Varian leak detector was confirmed in the "D" circuit to be stable at 10^-9 atm cc / sec and the pressure was 10^-4 Torr.

3. Each soldered joint on the "D" circuit was sprayed with a 2-second blast of helium - no response at the Varian.

4. The joint between the module-half of the water block and the copper blank-off was sprayed with a 2-second burst - no response.

5. A general area flood of helium sprayed for 10 seconds was applied all around both the "D" and "C" blocks - no response.

It was concluded that the "D" circuit had passed this leak check.  The "C" circuit was checked next.  The detector was changed to the "C" circuit and the circuit was pumped down.  At around 2pm the leak check resumed.

6. The base leak rate on the Varian leak detector was confirmed in the "C" circuit to be stable at 10^-9 atm cc / sec and the pressure was 10^-4 Torr.

7. The solder joint area on the "C" circuit was sprayed with an 8-second burst of helium - no response.

8. The joint between the two halves of the water blocks was sprayed with a 6-second helium burst - no response.

It was concluded that the "C" circuit had passed this leak check.

The electrical continuity of the "C" and "D" circuits were confirmed in the Target Hall at the service cap, and in the module at the Hot Cell, to double check that the correct lines has been pumped and leak checked - this was OK.

The ionizer tube heater lines appear to be leak tight at the Hot Cell.