See PO# TR193650 

The power supplies were "de-dusted" yesterday by Ray Dube and team. 

A flash and "thumb" was observed at the end of the mass scan.

Friday, July 12, 2013, 15:51: Ray Dube had a look inside. After the fuse was reset, the Power Supply could operate again.

A power bump was experienced at about the same time as the MB1 fuse latched.

https://web.accel.triumf.ca/isac_elog/Elog_show_result.pl?inid=172266&style=entry#172266

The right side of the insulator cracked/fractured either as the bolt was tightened or loosened. 

Thursday, July 18, 2013, 08:41: Restarting archivers

By Ray. Note that controls have not been updated yet.

TP1B high frequency noise is coming and going. Power is 22W , current 1.1A (other pumps are 11W and 14W, 0.7A)

Edi from vacuum group notified. He will replace the pump today.

Tuesday, August 20, 2013, 08:40: Turbos off. Vacuum 1.4E-7 T

Tuesday, August 20, 2013, 10:01: Started venting.

Turbo has been replaced by Edi.

Tuesday, August 20, 2013, 16:28: Roughing

Tuesday, August 20, 2013, 16:51: Turbos started.

TP1A timed out. Could not open BV1A and restart due to too high backing pressure at CG1A

Wednesday, August 21, 2013, 08:17: Turbos started. Vacuum 0.043 T

Wednesday, August 21, 2013, 08:25: Turbos at speed. TP1B: 1.2A 28W 30 deg C.

Wednesday, August 21, 2013, 08:27: Vacuum at 5.6 E-6 T

CG1A is climbing from 0.016 to 0.130 in 30 seconds when isolated.

The leak was confirmed to be between BV1A and PV1 in the bellows. The bellows has been replaced and backing pressure is back to normal values.

Monday, August 26, 2013, 14:07: The turbo could be restarted, but it does not sound happy (Dimo was consulted earlier today). The pump is drawing around 4 A. The current draw is fluctuating between 3.5 and 4.2 A at the same time as backing pressure is spiking from 0.015 to 0.045 T

Monday, August 26, 2013, 15:32:: The turbo failed again. Dimo had a quick look. It will have to be replaced. See e-fault: 6953

Wednesday, August 28, 2013, 08:48: Stopping TP1B. Vacuum at 4.8 E-7 T

Wednesday, August 28, 2013, 10:59: Venting

Anthony has replaced the pump. There was no screen on the existing pump. A screen has been installed in front of the turbo.

Wednesday, August 28, 2013, 14:03: started roughing

Wednesday, August 28, 2013, 14:31: Starting turbos

Wednesday, August 28, 2013, 14:41Turbos at speed

Wednesday, August 28, 2013, 14:43: Vacuum at 2.0 E-5 T

Jens Lassen provided a new controller for the Hall prove. With the help from Graham from controls it was reconfigured and is operational again. The magnet must likely be calibrated again.

Ray D. installed the "standard" 6V 200A FEBIAD COIL P/S on Friday morning.It has not yet been tested as water supply was on.

Monday, September 16, 2013, 17:04: Cleaned GE. Copper shavings were removed from below the guide pins for the Heat Shield. The shavings were sitting on top of the aluminum support.

The coil insulator has been observed to have cracked earlier. 

New calibration of the m/q based on the hall probe after exchanging the controller(MASSOVERQ2). Based on NiO#2-HP-FEBIAD with Ne supplied and ANODE biased to 200V, 30kV Bias.

CONST11 = -16.3929
CONST22 = 0.12481

http://isacwserv.triumf.ca/onlylocal/isactdata/save_restore/masscorr/2013-09-18-09%20NiO%232

Data and results from Gnuplot

"2013-09-18 NiOcalibration.txt"
6.02 -1192 6Li
7.02 -1288 7Li
19.99 -2177 20Ne
21.99 -2284 22Ne
38.96 -3043 40K
40.96 -3118 41K
180.9 -6577 Ta
196.9 -6864 TaO

f(x)=((x+a)**2)*b/30000;
a=35.221;
b=0.129991;
fit f(x) "2013-09-18 NiOcalibration.txt" using 2:1 via a,b;

Final set of parameters Asymptotic Standard Error
======================= ==========================

a = -16.3929 +/- 2.015 (12.29%)
b = 0.12481 +/- 8.448e-005 (0.06769%)


correlation matrix of the fit parameters:

a b
a 1.000
b 0.952 1.000  

The Heat Shield circuit can now be separately purged for water. Use valves on heat shield circuit to purge the lines for target exchanges from now on.

All paddle wheels have been rotated to allow trapped air to escape the system more easily.

This morning the turbo was found tripped off. 

The controller was replaced by Edi on Friday.

Monday, October 07, 2013, 08:28: Starting Turbo

Monday, October 07, 2013, 08:29: Turbo at speed. Vacuum at 4.4E-7 T

The Conductor insulating blocks - ITD053C and ITD054C - that secure the target heater and coil conductor blocks were replaced. The existing ones were cracked and fell apart upon removal.

Pressure around 140 mTorr. The pressure started increasing early November 2nd. Will continue to monitor.

Tuesday, November 12, 2013, 09:51 UPDATE
 Backing pressure further increased to ~ 350 mTorr over the weekend. Vacuum group has been informed and will replace the pump this week.