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
Message ID: 642     Entry time: Saturday, August 26, 2023, 09:41
Author: Darwin Ortiz Rosales 
Target Material: TaC 
Target Oven W.O#: 45220-10 
Source: LP-SIS 
Status: Done 
Subject: TaC coating sintering 

Saturday, August 26, 2023, 09:39

The coated container was wrapped in 4 Ta foil heatshields.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Heating autoramp starged at 2A/min(1A/30s) on  TGHT  100A

Then at 4A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Initial IGP1= 8.7e-07 Torr

 


Saturday, August 26, 2023, 10:54

IGP1= 1.2e-06 Torr

Start ramp up at 4A/min on both heaters (2A/30s) until TGHT = 400A and TBHT=230A


Saturday, August 26, 2023, 11:32

Paused ramp to allow temperature to stabilize and record data

OMEGA= 1396 C

IGP1= 2.47e-06 Torr


Saturday, August 26, 2023, 11:52

Paused ramp to record data

OMEGA = 1544 C

IGP1=3.4e-06 Torr


Saturday, August 26, 2023, 12:09

Paused ramp to record data

OMEGA = 1653

IGP1 = 4.5e-06 Torr


Saturday, August 26, 2023, 12:33

Omega went up to 1878C.  Lowered the current on TGHT to reach OMEGA = 1857 C

Will keep until 430 pm

IGP1- 3.4e-06 Torr

 



Saturday, August 26, 2023, 16:10

ramping down at -2A/min tght 1A/min tbht

1837 C OMEGA

 

ELOG V2.9.2-2455