Thursday, 7th September:

Vaccum after pumping all night preamps off, chiller off

• 09:37: IMG1 2.3E-5 mbar, Chamber 7.5 E-5 mbar; Julabo off;
• 09:38: IMG1 2.1E-5 mbar; Chamber 6.6E-5 mbar; Julabo 20 Celsius
• 09:41: IMG1 2E-5; Chamber 6.6E-5; Julabo 5 Celsius
• 09:55: IMG1 1.3E-5; Chamber 1.3E-5
• 10:10 IMG1 1.2E-5; Chamber 4.5E-5;

Preamp power ON, Chiller on 5 Celsius

• 10:25 IMG1 1.3E-5; 5E-5; Thermocoupling Readout 16 Celsius
• 11:20 IMG1 1.5E-5; 6.1E-5 Thermocoupling Readount 19.3
• 13:08 IMG1 1.6E-5; 5.5E-5
• 14:16 IMG1 1.4E-5; 5.1E-5
• 15:40 IMG1 1.4E-5; 4.9E-5
• 17:55 IMG1 1.3E-5; 4.5E-5

Preamp OFF, chiller off

8th September

• 1.2E-5; 3.9E-5

--> Leak test with He, replace target ladder with blank and refit feedtrhrough (upstream detectors), identify some scratches

start pumping

• 23:50 IMG1 2.2E-5; Chamber 9E-5

9th September

• 08:17 IMG1 1.3E-5; 5.1E-5 mbar

Leak test but no leaks found anywhere now.

Chiller on 5 Celsius, preamplifiers ON

• 10:55 IMG1 9.1E-6; 3.8E-5
• 12:00 IMG1 8.9E-6; 4.0E-5
• 14:50 IMG1 8.1E-6; 3.6E-5

Preamplifiers OFF

• 15:05 IMG1 6.3E-6; 2.9E-5 (9.8 C)
• 15:12 IMG1 6.1E-1; 2.9E-5 (9.3 C)
• 15:25 IMG1 5.9E-6; 2.8E-5 (9.0 C)

Chiller OFF (not sure when exactly chiller was turned off)

Sunday 10/09/2017

• 22:50 IMG1 8.8E-06; 3.4E-05

Monday 11/09/2017

• 9:20 IMG1 8.2E-06; 2.7E-05

Leak test on Cooling loop. --> Big leak detected. Open up chamber to replace cooling.

Tuesday 12/09/2017

Several tests done for cooling, it seems that even the smallest possible cooling loop is leaky.

• 19:00, close chamber and start pumping
• 19:13 start both turbo pumps at 9.9E-1 mbar
• 19:23 P=2.7E-4 mbar

Note that big Turbopump has been switched to normal start so pumping times not comparable with before. Maximum wattage of pump should be 420 W

Wednesday 13/09/2017

• 9:15 8.5E-6 mbar; 3.1E-5mbar
• 9:30 Cooling ON, switched to -10C
• 10:05 4.4E-6 mbar; 1.7E-5 bar (-9.9C on chiller)
• 10:15 preamps on, -10 C, 4.1E-6; 1.6E-5 mbar
• 10:22 T readout 5.6 C, 4.6E-6; 1.8E-5
• 10:26 T readount 6.2 C; 4.8E-6 mbar, 1.9E-5 mbar
• 10:40 4.9E-6 mbar; 1.9E-5 mbar

Preamps off, cooler off

open chamber for detector installation and some checks; close chamber and pump

• 18:55 7.2E-5; 3.3E-4 mbar
• 20:45 4.4E-5; 1.8E-4 mbar (nopreamp, no chiller)

Thursday, 14 September 2017

• 9:25 1.1E-5mbar; 4.3E-5 mbar

open chamber to discuss with beam operators

• 11:05 close chamber start pumping
• 11:20 1.2 mbar, turbo pumps on
• 11:32 4.1E-4 mbar; 1.1E-3 mbar