Logbooks Lab Maintenance Evaporator_1 Evaporator_2 Laser cutter Target Production Test-Stand RH-ISAC RH-Cyclotron RH-Meson Hall RH-Beamlines RH-ARIEL
  Test-Stand  Not logged in ELOG logo
Message ID: 422     Entry time: Wednesday, January 21, 2015, 13:40
Author: Anders Mjos 
Target/No.#:  
Source:  
Station:  
Module:  
Target Oven W.O#:  
Heat Shield W.O#:  
Status: In progress 
Subject: HV BIAS Test 

Wednesday, January 21, 2015, 13:34: Opened water flow.

Wednesday, January 21, 2015, 13:42: 30 / 15 kV (BIAS / EZL)

Wednesday, January 21, 2015, 13:4: 40 / 20 kV

Wednesday, January 21, 2015, 13:54: No sparks.

Wednesday, January 21, 2015, 13:56: 50 / 25 kV

Wednesday, January 21, 2015, 14:0: No sparks

Wednesday, January 21, 2015, 14:11: 55 / 30 kV

Wednesday, January 21, 2015, 14:45: No sparks

Wednesday, January 21, 2015, 14:47: 60 / 30 kV and  37 / 122 uA

Wednesday, January 21, 2015, 16:00: No sparks.

Wednesday, January 21, 2015, 16:02: PS off.


Thursday, January 22, 2015, 10:18 : Started TBHT heating

Thursday, January 22, 2015, 10:26: Opened isolation valve


Friday, January 23, 2015, 09:45: 30 / 15 kV

ANODE 200 V
COIL 0 A
EE -1400

Friday, January 23, 2015, 09:46: TBHT auto heating to 280 A (235)

Friday, January 23, 2015, 10:05
COIL 5.4 A 4.9 V

 Friday, January 23, 2015, 10:13: 40 / 17 kV

Coil voltage limited. Reduced to 0 A - minimal impact on FC0 current.

Friday, January 23, 2015, 10:24: 50 / 22 kV

Friday, January 23, 2015, 10:42: 60 / 26 kV

Friday, January 23, 2015, 11:45: Sparking activity. Seen and heard by people in the area.

Friday, January 23, 2015, 12:00: Reduced current limit on BIAS PS to 0.10 (on the pot)

Friday, January 23, 2015, 12:04: A couple more sparks.

Friday, January 23, 2015, 12:05: Anode current limited since shortly after the large spark at 11:45

Friday, January 23, 2015, 12:11: 50 / 23 kV

Friday, January 23, 2015, 12:48 : Restarted turbos after the spark. TP1B and TP6

Friday, January 23, 2015, 13:16: 55 / 25 kV

Friday, January 23, 2015, 14:44: ~ 5 sparks / hour for the last 60 min

Friday, January 23, 2015, 15:49 : No sparks for the last 60 min. Cooling target.

Friday, January 23, 2015, 16:14: Source and HV off.


Monday, January 26, 2015, 11:15: TBHT at 235A set point


Tuesday, January 27, 2015, 10:13: Source on

Tuesday, January 27, 2015, 10:13: 30 / 15 kV

Tuesday, January 27, 2015, 10:59: COIL to 3.5 A

Tuesday, January 27, 2015, 11:15: 40 / 20 kV

Tuesday, January 27, 2015, 13:17: 50 / 23 kV

Tuesday, January 27, 2015, 16:56: No sparks for the last 3 h. 1 spark earlier.

Tuesday, January 27, 2015, 16:59 30 / 14 kV

Tuesday, January 27, 2015, 17:02: Cooling down target. Source and HV off.

ELOG V2.9.2-2455