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

There were some problems this morning with provision of FEBIAD gas to the the target at ITE.  It was suspected that the gas line was improperly connected to the module, or that the valves at the module were not opened.

Remote Handling was asked to open the HV cover on TM3 at ITE and check the connection of the FEBIAD gas line.  Grant Minor, Maico Dalla Valle, Dan McDonald, and Anders Mjos entered the Target Hall before lunch on Work Permit I2014-07-07-1.

Maico entered ITE with suit and respirator, disengaged / disconnected the interlocks and removed the HV cover.  He inspected the FEBIAD gas line and found that it was properly connected, and that the valves were both open.  The gas line is shown in the attached image, with both valves marked in red.

Grant and Anders went into the electrical room to examine the supply gas bottle and supply circuit, and found that the supply gas pressure to the regulating valve was low.  It was concluded that the problem was not at the Target Module / Target Station.

Grant returned to the Target Station and instructed Maico to replace the HV cover.  After this was done, Grant confirmed with Jon Aoki over the phone that the interlock switch signals were both reading "OK".

Friedhelm Ames made an entry in today's ISAC Ops e-log regarding the supply pressure to the regulating valve.

ISAC E-log

Bevan and I did a helium pressure test on TM4 HS water circuit at CS. The leak detector is pumped to the bottom scale(E-9 atm.cc/sec and E-4torr). We applied 70 psi helium to the HS circuit for 3 minutes .  No response had been found. I also leak checked IG1 flange which was replaced yesterday. It is  good. We connected the TM4 to CS and put the HV cover on. The water cooling system will be started soon.

 Active trash was placed into an unmarked pail and place in spot 7C of the vault the pail measured 321uSv/hr when removed from the SHC. See attached PDF for details.

 Another pail of active trash was move to the spent target vault from the south hot cell. 800uSv/hr, place in spot 7A see attached PDF for vault status.

TM4 has been disconnected in ITE. Vacuum pumps and gauge are not disconnected yet.

ITE TP3 is replaced. ITE is under vacuum again. All turbo pumps are started successfully. Current draw on pumps are normal so far.

ITE venting is in processing.

They work fine. Current draw on all pumps are normal. I asked operator to switch on IG1 , IG1S and PNG4.

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

TM#2 with no target and no source tray has been moved from the conditioning station to the north east silo.

Wednesday, October 14, 2014

 The BIAS voltage was brought up between 1:30pm and 5pm. Sparks tripped the BIAS power supply at voltages between 20 - 24 kV. Multiple attempts were made. The current was about 50-60 uA.

Wednesday, October 15, 2014

Temperature in the cooling circuit is too hight to do a HV test. The cooling circuit was started, but shuts off after ~10 m

Thursday, October 16, 2014

David and I found that the fans on the cooling unit on the roof did not run and that the compressors get hot and likely trip on over temperature protection (hot to the touch). We found the manual in the control panel of the unit.

10am: HV to 20kV before a spark tripped the PS. Current at 40 uA - resistivity at 11.9 Mohm

5pm: HV to 20kV before fluctuations in current, then a spark tripped the PS. Current around 40 uA. Resistivity 12.6 Mohm

Friday, October 17, 2014

8am: Staging did not start over night. TS5 temp is 31 deg C, which would have tripped power supplies. Reset and enabled staging.
The system increased staging until all 3 compressors were running.
9am: Cooling supply temperature reached ~3 deg C. Disabled staging and switched off all pumps
2pm: Switched off water circulation for the weekend.

TM#4 from south hot cell to the conditioning station no target is attached to the module.

TM#4  with no target has been moved from conditioning station to the south hot cell.

TM#1 with no target has been moved from the south west silo to the south hot cell for the installation of the UCx target.

TM#2 with no source tray has been moved from the north east silo to the south hot cell.

Wires for TM#2 steering elements, and png gauge have been run down to the containment box level. Chad has placed them in the little cable trays. Slack has been pulled back. and termination of the wire will be done on the 7th of May. A modification was done to the signal line of the png gauge wire ultem block, as grounded screw was inserted to allow for strain relief so the end would hopefully quit breaking. See attached pictures for the details.

Wires in TM#2 have been terminated at the top of the module.

50 kV stable with less than 1 spark/h during the weekend by RIB obs.

Today 57 kV reached, but observed sparking on the resistors of the new HV cable. The cable will be removed to take out the resistors, before reinstalling it.

The target hall was locked out, but has now been reopened. This was to avoid sparking to the HV cover.