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Message ID: 577     Entry time: Thursday, June 02, 2022, 16:53
Author: Aaron Schmidt 
Target Material: Ta 
Target Oven W.O#: 44691-12 
Source: LP-SIS 
Status: In progress 
Subject: Conditioning Ta#64 

 Ta#64 LP-SIS target description: 

Total Ta foils = 470 [6x20 packs + 350 single discs]

Foil Thickness = 0.0254mm (0.0010") Measured.

Target density = 12.005 g/cm3

Target length = 3.35 cm

Total Mass = 40.2166 g [Incl foils + Ta wire on 6 packs]

Total mass w/ Target oven= 446 g (w/ end caps)

Discs in target are arranged as follows: 1pack / 75 singles / 1pack / 100 singles / 2packs / 100 singles / 1pack / 75 singles / 1pack

End caps installed (Not expanded). No Ta foil heat shield added


Final desired temperature = 1900C.

Thursday, June 02, 2022, 16:49: Roughing 

Thursday, June 02, 2022, 17:02: OMEGA slope = 0.98. 

Thursday, June 02, 2022, 17:10: TP1 on.

Thursday, June 02, 2022, 17:21: TP1 is up to speed. PS on. 


Friday, June 03, 2022, 05:22: Auto-ramping TGHT / TBHT to 500 / 200 A @ 2 A per min. Vacuum @ 1.78e-06T.

Friday, June 03, 2022, 08:59: TGHT / TBHT @ 424 / 200 A. Vacuum @ 3.42e-06T. Temperature @ 1318 C. Auto ramp ongoing.

Friday, June 03, 2022, 09:40: TGHT / TBHT @ 500 / 200 A. Vacuum @ 4.47e-06T. Temperature @ 1469 C. Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min

Friday, June 03, 2022, 10:47: TGHT / TBHT @ 580 / 230 A. Vacuum @ 6.26e-06T. Temperature @ 1620 C. Auto-ramping TGHT to 600 @ 2 A per min 

Friday, June 03, 2022, 11:08: TGHT / TBHT @ 600 / 230 A. Vacuum @ 6.54e-06T. Temperature @ 1655 C. Auto-ramping TGHT to 630 @ 2 A per min  

Friday, June 03, 2022, 11:30: TGHT / TBHT @ 630 / 230 A. Vacuum @ 7.73e-06T. Temperature @ 1708 C. Auto-ramping TGHT to 650 @ 2 A per min

Friday, June 03, 2022, 11:45: TGHT / TBHT @ 650 / 230 A. Vacuum @ 8.32e-06T. Temperature @ 1748 C. Auto-ramping TGHT to 660 @ 2 A per min

Friday, June 03, 2022, 11:53: TGHT / TBHT @ 660 / 230 A. Vacuum @ 8.83e-06T. Temperature @ 1755 C. Auto-ramping TGHT to 670 @ 2 A per min

Friday, June 03, 2022, 12:05: TGHT / TBHT @ 670 / 230 A. Vacuum @ 9.03e-06T. Temperature @ 1780 C. Auto-ramping TGHT to 680 @ 2 A per min

Friday, June 03, 2022, 12:11: TGHT / TBHT @ 680 / 230 A. Vacuum @ 9.14e-06T. Temperature @ 1795 C. Auto-ramping TGHT to 700 @ 2 A per min 

Friday, June 03, 2022, 12:23: TGHT / TBHT @ 700 / 230 A. Vacuum @ 9.50e-06T. Temperature @ 1822 C. Auto-ramping TGHT to 720 @ 2 A per min

Friday, June 03, 2022, 12:29: TGHT / TBHT @ 720 / 230 A. Vacuum @ 1.00e-05T. Temperature @ 1853 C. Auto-ramping TGHT to 730 @ 2 A per min

Friday, June 03, 2022, 12:36: TGHT / TBHT @ 725 / 230 A. Vacuum @ 1.04e-05T. Temperature @ 1860 C. Manually tap up TGHT to reach desired temperature

Friday, June 03, 2022, 13:04: TGHT / TBHT @ 760 / 230 A. Vacuum @ 1.07e-05T. Temperature @ 1901 C. Desired temperature reached

 

Friday, June 03, 2022, 13:13: Auto-cooling at 2 A per min. 

 


Monday, June 06, 2022, 07:07: PS off. BV1 closed & TP1 off.

Monday, June 06, 2022, 08:47: Venting. 

ELOG V2.9.2-2455