Logbooks Lab Maintenance Evaporator_1 Evaporator_2 Laser cutter Target Production Test-Stand RH-ISAC RH-Cyclotron RH-Meson Hall RH-Beamlines RH-ARIEL
  Evaporator_2  Not logged in ELOG logo
Entry  Wednesday, May 25, 2016, 11:40, Laura Lambert, Empty, 41369-4, HP-SIS, In progress, sintering TaC coating on SiC#33 container 
    Reply  Tuesday, May 31, 2016, 11:10, John Wong, Empty, 41369-4, HP-SIS, Done, sintering TaC coating on SiC#33 container 
Message ID: 301     Entry time: Tuesday, May 31, 2016, 11:10     In reply to: 300
Author: John Wong 
Target Material: Empty 
Target Oven W.O#: 41369-4 
Source: HP-SIS 
Status: Done 
Subject: sintering TaC coating on SiC#33 container 

Laura Lambert wrote:

 Wednesday, May 25, 2016, 11:37

Container coated with TaC using 'flushing technique' [cleaned ionizer tube with acetone, so no coating inside ionizer tube]

Wrapped with 2 x Ta heat shields - one full height of Ta foil wrapped around cooling fins twice

Currently pumping down in evap2


 Thursday, May 26, 2016, 09:28

Tapped up manually to 40A

IGP1 = 6.6e-7 Torr

Initiating auto-ramp at 0.2A/min and 0.1A/min for the TGHT and TBHT respectively.

Final setpoints for TGHT = 650A and TBHT = 230A

Once max setpoints reached will continue to tap up manually while monitoring temperature to 1900C


 

 Tuesday, May 31, 2016, 11:09

TGHT at 615A/9.08V, temp = 1610C.  Vacuum at 1.8e-7 Torr. 

Tapping up TGHT to reach 1900C


 Tuesday, May 31, 2016, 12:04

TGHT at 765A/11.90V.  Temp at 1900C.  Pressure is coming down from 8.7e-7Torr. 

Will keep at this temperature for a day.


 Wednesday, June 01, 2016, 15:22

Temperature has been stable at 1900C.  Pressure is coming down from 3.4e-7 Torr. 

Cooling down TGHT and TBHT at 2A/min and 1A/min, respectively.


 Friday, June 03, 2016, 12:10

TGHT/TBHT at 0A.  Target can be remained under vacuum until Monday.


 Monday, June 06, 2016, 16:54

Target container was inspected; it looks good


 

ELOG V2.9.2-2455