Anders Mjos wrote:

Due to high vacuum a leak check will be done on the system. Thursday, July 19, 2012, 09:00 : Base leak rate 4E-9 atm-cc/sec Thursday, July 19, 2012, 09:07: Leak detected on side door. Mid 1E-8 range. Thursday, July 19, 2012, 09:08: Leak detected on front door. Mid 1E-6 range. Main leak left or bottom side. Thursday, July 19, 2012, 09:20: Leak on side door could not be reproduced. Previous response possibly due to  "cross-talk" with front door.

 Thursday, July 19, 2012, 11:29: Wiped both o-rings, grooves and sealing faces with kimwipes. Removed black and brown residues.

Thursday, July 19, 2012, 11:29: roughing

Thursday, July 19, 2012, 11:49: starting turbos

Thursday, July 19, 2012, 11:54: TP1B at speed

Thursday, July 19, 2012, 11:58: TP1A timed out

Thursday, July 19, 2012, 11:58 TP1A restarted. at speed.

Thursday, July 19, 2012, 11:59: both turbos at speed. Vacuum. 2E-5

Thursday, July 19, 2012, 12:57: Doors leak checked. No response. Base rate 1.6E-8 atm-cc/sec. TP pressuer 0.0E-4 Torr . TSGIG1 4.2E-6 Torr. TSG:CG1A 0.014 Torr.

Waiting Rick for the fitting on the vacuum pump.

A major leak was found on the connection to the regulation valve on the He bottle. Ferrule replaced. System leak checked.

After He bottle: base 5E-6, no response to He spray

AfterSV1: base 5E-7, no response

After SV2: base 4E-7, no response

The system should now be operational. Gas lines were evacuated with the leak checker.

Gas line vacuum pump reinstalled after fitting was modified to receive a standard swagelok connector. The vacuum line was plumbed using 1/4" copper tube (not Stainless) for the the ability to flex and manipulate the line for pump removal and and insertion.

Test high voltage to 30 kV ok

Test gas valve open at 6.1 V

Test Ne leak ok

Will run test from home.

The ramp up finished.

I have 3.35E-6 Amp out of the source on FC0.

Vacuum  4.3 E-7 T increase Coil current to 40 A. No effect on vac.

Increase coil to 50 A. Vacuum still good.

I will continue from home..

Lost communication with EPICS. Came in reset the ...

So far no luck.

The reset restored the control.

But magnet supply does not put any amperage out.

Try turning it off and on. No chance.

I gave up. See tomorrow.

Archivers not running this morning. Started both ISACT and SOURCES

This morning I try to contact PS group no one answer. Dan Louie is in vacation.

I went into the can diagnostics panel and reconfigure MB1 power supply.

This worked.

I am done with the FEBIAD test (anode biased)

We will swap the bias now to the cathode and change the polarity to negative.

One thing that seems to be strange regarding this FEBIAD is the best results are without any current in the coil.

Normally for the neon ionization the on-line source wanted to be at around 50 to 80 Amp. Not this one.

Is there anything special about this coil?

Ray is finishing the electrical modifications for the FEBIAD with the biased cathode.

We found the source of the sparks. The disconnected target heater cables were resting on the Einzel lens cap.

Thursday, August 16, 2012, 15:29: Turbos off

Thursday, August 16, 2012, 15:50 : Venting

There was a short between the gas line and the heat shield - as the gas line insulator was not tied to the heat shield. A Ta-wire was used to tie the gas line and keep it from touching the heat shield.

As per Ray Dube for the FEBIAD anode bias test. The PS will need to be reconnected before a target is run.

Thursday, August 16, 2012, 17:04 : Starting turbos

Thursday, August 16, 2012, 17:09 : TP1B at speed

Thursday, August 16, 2012, 17:13 : TP1A at speed (after 1 time out)

Thursday, August 16, 2012, 17:14 : Vacuum at 1.8E-5

Yesterday Ray Dube has changed the configuration in order to run the FEBIAD with the cathode on negative bias.

There were a short between the gas line and the common. The box has been opened and the short removed.

This morning I am turning on the cathode heater to 290 A.