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Message ID: 494     Entry time: Friday, January 22, 2016, 15:34
Author: Anders Mjos 
Target/No.#: SiC 
Source: LP-SIS 
Station:  
Module:  
Target Oven W.O#: 41077-3 
Heat Shield W.O#:  
Status: In progress 
Subject: EE coating test 

Friday, January 22, 2016, 15:30: Turbos started

Friday, January 22, 2016, 16:14: RGA ON


Monday, January 25, 2016, 10:30: Opened water. No response on vacuum.

BIAS / EZL / EE to  30 / 15 / 1.5 kV

Started auto-ramping to 300 / 200 A at 2 A/min.

Monday, January 25, 2016, 15:34: Aborted auto-ramping and stepped down to 180 A on TGHT / TBHT to conserve salts. Vacuum at 1.2 E-6 T


Tuesday, January 26, 2016, 08:30: Continue auto-ramping.

Tuesday, January 26, 2016, 09:15: Tuning by Alex


Wednesday, January 27, 2016, 08:24: Increased good/bad vacuum to 4/6 E-6T

Wednesday, January 27, 2016, 08:58: Continue ramping to TGHt 400 A


Thursday, January 28, 2016, 13:28: Continue ramping to TGHT / TBHT 420 / 220 A


Monday, February 01, 2016, 08:31: Ramp down started

Monday, February 01, 2016, 10:40: Isolation valve closed

Monday, February 01, 2016, 10:42: RGA off.


Tuesday, February 23, 2016, 09:07 Monday, February 01, 2016, 16:35: BIAS / EZL / EE off. Stopped turbos.


Tuesday, February 02, 2016, 09:28: Venting through turbo pump (air).


Wednesday, February 03, 2016, 08:35: Roughing

Wednesday, February 03, 2016, 09:06: Starting TP1B only.

Wednesday, February 03, 2016, 09:17: Force on TSG:IG1 for high vacuum test

Wednesday, February 03, 2016, 09:27 : EE current limiting around 1500 V with IG1 at 4E-5 T. EE can no longer hold more than some hundred volts before current limiting.

Wednesday, February 03, 2016, 10:01: Stopped turbo. Will vent and inspect insulator.

Wednesday, February 03, 2016, 10:06: Force removed from IG1.

Wednesday, February 03, 2016, 12:11: Venting


TEST 2


Cleaned PE and EE with acetone.

Friday, February 05, 2016, 15:05: Roughing

Friday, February 05, 2016, 15:48: Turbos started.

Friday, February 05, 2016, 15:56 : Turbos at speed. Vacuum at  3.7E-5 T


Tuesday, February 09, 2016, 08:55: Opened water to HS circuit. Vacuum stable at 6.2E-7 T. No response on RGA

Tuesday, February 09, 2016, 08:59: Started auto-ramping heaters.

Tuesday, February 09, 2016, 09:12: Opened IV4


Wednesday, February 10, 2016, 14:15: Increased voltage limit on TB HT


EE voltage limited over the weekend on Feb 14th. See attached.

Observed EE opening with telescope. Could not see any material buildup. Nice round shape visible.

Monday, February 15, 2016, 11:55: Starting ramp down of heaters.


Tuesday, February 16, 2016, 08:32: BIAS/EZL/EE off. Stopped turbos.

Tuesday, February 16, 2016, 08:37: RGA off.


Tuesday, February 23, 2016, 09:08: Venting

Attachment 1: 2016-02-14_EE_V_limit.png  12 kB  Uploaded Monday, February 15, 2016, 09:04  | Hide | Hide all
2016-02-14_EE_V_limit.png
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