LP-SIS 45220-8 is empty & for testing only.

Tuesday, November 15, 2022, 11:00: Roughing.

Tuesday, November 15, 2022, 11:21: BV1A open. 

Tuesday, November 15, 2022, 12:40: TP1B on

Tuesday, November 15, 2022, 12:47: TP1A on

Tuesday, November 15, 2022, 12:49: T1A Currently spinning up. Distinct & loud hum noted. Contacting vacuum group.

Tuesday, November 15, 2022, 12:50: TP's off.

Tuesday, November 15, 2022, 12:55: TP1B restart. ok

Tuesday, November 15, 2022, 12:56: TP1A restart. Failed

Tuesday, November 15, 2022, 13:04: TP1A restart. Failed.

Tuesday, November 15, 2022, 13:05: Controller reset TP1A restarted. Failed. Visually confirmed that it has seized.

See elog# 946

Wednesday, November 16, 2022, 14:53: TP1B on

Wednesday, November 16, 2022, 14:56: TP1B at speed.

Wednesday, November 16, 2022, 14:58: TP1A on.

Wednesday, November 16, 2022, 15:07: TP1A at speed. IG1 on

Thursday, November 17, 2022, 07:14: Waterline FS#5 open. Vacuum stable @ 9.59e-07T

Thursday, November 17, 2022, 07:15: IV4 open.

Thursday, November 17, 2022, 07:18: PS & Sources on.

Thursday, November 17, 2022, 07:20: Auto-ramping TGHT / TBHT to 350 / 150 A @ 2 A per min.

Thursday, November 17, 2022, 07:23: Optics set

Thursday, November 17, 2022, 07:32: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Thursday, November 17, 2022, 07:35: BIAS / EE / EZL @ 35 / -1.8 / 15 kV. 

Thursday, November 17, 2022, 07:38: BIAS / EE / EZL @ 40 / -2.0 / 17 kV

Thursday, November 17, 2022, 07:40: BIAS / EE / EZL @ 45 / -2.3 / 20 kV

Thursday, November 17, 2022, 08:40: No sparks over 1 hr.

Thursday, November 17, 2022, 08:43: HV reduced. BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Thursday, November 17, 2022, 10:06: Minor instability & sparks noted.

Thursday, November 17, 2022, 10:18: Consistent sparking. Visually confirmed on the TBHT insulator.

Thursday, November 17, 2022, 10:21: BIAS & EZL reduced to 20 / 10 kV.

Thursday, November 17, 2022, 10:51: HV stable for the last 15 minutes. Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min.

Thursday, November 17, 2022, 14:02: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. Stable

Thursday, November 17, 2022, 14:25: Mass & wire scans complete Empty LP-SIS No salts added.

Masses showed around mass:

-130-140

-39-40

-23-28

Thursday, November 17, 2022, 14:27: Outgassing continues.

Friday, November 18, 2022, 07:39: Mass & wire scans continued.

Traces masses:

-39-40

-23

Friday, November 18, 2022, 07:48: Auto-cooling @ 2 A per min.

Friday, November 18, 2022, 08:01: HV off.  

Monday, November 21, 2022, 06:44: Sources off & IV4 closed.

Monday, November 21, 2022, 06:45: IG1 off. Turbo pumps off.