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Message ID: 1051     Entry time: Monday, June 23, 2025, 16:58
Author: Dave Neilson 
Target/No.#: Ta#69 
Source: HP-SIS 
Station: ITW 
Module: TM2 
Target Oven W.O#:  
Heat Shield W.O#:  
Status:  
Subject: Target Conditioning 

Monday, June 23, 2025, 15:40   target installed. roughing

Monday, June 23, 2025, 16:57 turbo pumps on.

Tuesday, June 24, 2025, 14:50 Water cooling on.   no effect on vacuum

Tuesday, June 24, 2025, 16:19   ramping TGHT TBHT to 580 A / 230 A  at 0.5A/30s

 Wednesday, June 25, 2025, 09:30 target legs appear significantly hotter than usual. Suspect issue with water cooling or thermal contact between target legs and cooled terminals. Cooling down to investigate. 1A/10s to 100A/100A,

Wednesday, June 25, 2025, 11:31   decreasing cooling rate to .5A/30s

Wednesday, June 25, 2025, 15:37   Vented chamber. re-torqued all fasteners. Roughing

Wednesday, June 25, 2025, 16:18   turbo pumps on

Wednesday, June 25, 2025, 17:07  ramping TGHT TBHT to 580 A / 230 A  at 0.5A/30s

Thursday, June 26, 2025, 09:18 heating/cooling issue has been fixed.

Thursday, June 26, 2025, 09:19 ramping up HV BIAS/EE/EZL to 30/2.5/13 kV

 Thursday, June 26, 2025, 11:04 running mass scan -- 2025-06-26 Ta#69 conditioning mass scan.txt

Thursday, June 26, 2025, 11:48   running all wire scanners.

Thursday, June 26, 2025, 12:02 ramping down HV.

Thursday, June 26, 2025, 12:06  decreasing TGHT TBHT to 0 at 0.5A/30s 

Attachment 1: 2025-06-26_Ta#69_HP-SIS_test_stand_target_conditioning.csv  985 Bytes  Uploaded Thursday, June 26, 2025, 13:36  | Show | Hide all
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