Nb#9 LP-SIS target description:
Total Ta foils = 470 [6x20 packs + 350 single discs]
Foil Thickness = 0.025mm
Target density = 7.24 g/cm3
Target length = 3.5 cm
Total Mass = 25.343 g [Incl foils + Ta wire on 6 packs]
Total mass w/ Target oven= 425 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 yet expanded). No Ta foil heat shield added.
Final desired temperature = 1900C.
OMEGA slope = 0.98.
Wednesday, October 21, 2020, 14:09: Roughing.
Wednesday, October 21, 2020, 14:32: Turbo pump on.
Wednesday, October 21, 2020, 15:29: Waterlines opened. Vacuum ok @ 1.05E-05T.
Wednesday, October 21, 2020, 15:30: TGHT / TBHT PS on. Slope Set.
Wednesday, October 21, 2020, 19:06: Auto-ramping TGHT / TBHT to 300 / 100 @ 1 A per min. Vacuum @ 1.85e-06T.
Thursday, October 22, 2020, 07:26: Auto-ramping TGHT / TBHT to 500 / 200 @ 2 A per min. Vacuum @ 7.61e-07T.
Thursday, October 22, 2020, 11:28: Auto-ramping TGHT / TBHT to 580 / 230 @ 2 A per min. Vacuum @ 1.53e-06T. The Omega IR2C is back. Temp @ 1576 deg C.
Thursday, October 22, 2020, 12:22: Auto-ramping TGHT to 625 A @ 2 A per min. Vacuum @ 2.47e-06T. Temp @ 1734 C.
Thursday, October 22, 2020, 12:48: Auto-ramping TGHT to 645 A @ 2 A per min. Vacuum @ 3.11e-06T. Temp @ 1815 C.
Thursday, October 22, 2020, 13:10: Auto-ramping TGHT to 660 A @ 2 A per min. Vacuum @ 3.39e-06T. Temp @ 1851 C.
Thursday, October 22, 2020, 13:25: Manually tap up TGHT until 1900 C. Vacuum @ 3.53e-06T.
Thursday, October 22, 2020, 13:30: TGHT @ 673 A. Temp @ 1903 C. Vacuum @ 3.79e-06T.
Thursday, October 22, 2020, 14:00: Auto-cooling @ 1 A per min.
Friday, October 23, 2020, 07:50: PS off. Turbo pump off. Purge waterline.
Friday, October 23, 2020, 09:02: Venting. |