HS note:

Base# 45235-16

Lid# 39956-8

Thursday, October 03, 2024, 16:04: Roughing. IG6? Error?

Thursday, October 03, 2024, 16:24: BV1A open. 

Thursday, October 03, 2024, 16:32: TP1B on

Thursday, October 03, 2024, 16:43: TP1A on.

Thursday, October 03, 2024, 16:51: IG1 on. 

Thursday, October 03, 2024, 20:01: Water cooling on. No effect to vacuum. TGHT TBHT ramping at 1A/30s to 580A/230A

Friday, October 04, 2024, 09:13 : Slowly increasing BIAS/EE/EZL to 30/2.5/13 kV.

Friday, October 04, 2024, 09:30:   problem with TMSIG6 (low pressure sensor in beam line).  Forced on for interlocks temporarily.  

Friday, October 04, 2024, 11:14   mass scanned - FC6 background working.  filename = 2024-10-04--11-11 HP-Ta-24D - scan 3.txt 

Friday, October 04, 2024, 11:14 repeating mass scan.   filename = 2024-10-04--11-40 HP-Ta-24D - scan 4.txt

Friday, October 04, 2024, 11:53 increasing to bias 50kV / ezl 33kV. 

Friday, October 04, 2024, 12:34:  BIAS/EZL at 50/33 kV.  Leaving for HV conditioning.

Friday, October 04, 2024, 12:43   one spark from HV BIAS to ground caused TGHT to trip. Current was restored within 10s. 

Friday, October 04, 2024, 15:31:  decreasing BIAS/EZL to 30/13kV.  Throughout time at high voltage, there were 3 sparks. Two were within 5 minutes of each other, and the last 2 hours proceeded without incident (no sparks)

Friday, October 04, 2024, 15:47  BIAS EZL at 30/13 kV.  running final mass scan. background FC6 appears not to be working again. but then restored.  scan file name = 2024-10-04--16-30 HP-Ta-24D - scan 5.txt

Friday, October 04, 2024, 16:22 decreasing biases to 0V

Friday, October 04, 2024, 16:23  ramping TGHT TBHT to 0/0A at -1A/30s

 Monday, October 07, 2024, 07:58: IV4 closed. IG1 off. TP off.

Monday, October 07, 2024, 08:43: PS off. Waterlines purged. Venting.