The HP-SIS uses the older center block. No serial number found.
Loaded with Tantalum. Rough Target description:
Comment on the bag - 0.9 cm space
Total Ta foils = 525
Foil Thickness = 0.025mm (assumed)
Target density = ?
Target length = 7.3 cm
Total Mass = ?
Total mass w/ Target oven= 1242 g.
Assembly voltage checks - OK. Note* Spacers between insulator & Target.
Thermocouple wires attach to the 9-pin connector.
Wednesday, June 26, 2019, 14:47: roughing.
Wednesday, June 26, 2019, 15:30: Turbos on.
Wednesday, June 26, 2019, 15:51: IG1 on. Vacuum @ 1.14e-4 T.
Thursday, June 27, 2019, 07:11: Waterlines opened. No response on RGA. Vacuum stable @ 3.49e-06T.
Thursday, June 27, 2019, 07:14: Power / sources switched on. Omega switched on to read thermocouples.
Thermocouple readings:
T1 - 24.8 C & T2 - 24.9 C.
Thursday, June 27, 2019, 07:16:
| Device |
Temp
[C] |
Flow
[lpm] |
| HS + MSP |
27.40 |
5.21 |
| TBHT |
27.11 |
7.91
|
| COIL + EE |
27.01 |
2.26 |
| TGHT |
27.12 |
6.26 |
Thursday, June 27, 2019, 12:43: Auto-ramping TGHT / TBHT to 350 / 125 A @ 2 A per min
Friday, June 28, 2019, 07:02: HV on, IV4 opened.
Friday, June 28, 2019, 07:09: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.
Friday, June 28, 2019, 07:10: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min.
Friday, June 28, 2019, 07:12: Spark*
Friday, June 28, 2019, 07:15: Optics on. Some instability noticed on the BIAS.
Friday, June 28, 2019, 07:17:
| Device |
Temp
[C] |
Flow
[lpm] |
| HS + MSP |
27.02 |
5.73 |
| TBHT |
26.87 |
8.29
|
| COIL + EE |
26.78 |
2.43 |
| TGHT |
26.86 |
6.47 |
Thermocouple readings:
T1 - 106.7 C & T2 - 106.8 C.
Friday, June 28, 2019, 07:24: Halt auto ramping. TGHT / TBHT @ 375 / 150 A. BIAS / EE / EZL @ 0 kV. Unusual amount of sparks and instability.
Friday, June 28, 2019, 08:45: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. Sparks seen immediately.
The TBHT insulator on the source tray side is glowing blue. Very neat.
Sparks observed striking inside the vacuum on the thermocouples / heat shield from the TBHT.
Friday, June 28, 2019, 08:57: BIAS / EE / EZL @ 0 kV. Auto-cooling @ 4 A per min.
Friday, June 28, 2019, 10:45: Disconnect mini pump, connect OMEGA thermometer to ground.
Friday, June 28, 2019, 10:59: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. No sparks.
Friday, June 28, 2019, 11:03: manually bump up TGHT / TBHT to 50 A.
Friday, June 28, 2019, 11:05: Auto-ramping TGHT / TBHT to 250 / 150 A @ 4 A per min.
Friday, June 28, 2019, 11:39: Spark*
Friday, June 28, 2019, 11:57: Auto-ramping TGHT / TBHT to 500 / 200 A @ 4 A per min.
Friday, June 28, 2019, 12:15: TGHT / TBHT @ 322 / 200 A. Sparking*
Friday, June 28, 2019, 12:17: Halt auto-ramping. Sparking*. Manually bring down current.
Friday, June 28, 2019, 12:23: Sparks ceased. TGHT / TBHT @ 300 / 150 A
Friday, June 28, 2019, 12:24: BIAS / EE / EZL @ 0 kV. Auto-cooling @ 4 A per min.
Friday, June 28, 2019, 12:32: new video taken. After reviewing the video, the spark originates at the heat shield / thermocouples and moves to the TBHT insulator.
Friday, June 28, 2019, 15:26: Auto-ramping TGHT / TBHT to 200/ 100A @ 4 A per min.
Tuesday, July 02, 2019, 07:58: RGA restarted.
Tuesday, July 02, 2019, 08:07: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. No sparks. Vacuum @ 7.08e-07T.
Tuesday, July 02, 2019, 08:08: Auto-ramping TGHT / TBHT to 350 / 150 A @ 4 A per min.
Tuesday, July 02, 2019, 08:37: Halt auto ramp. TGHT / TBHT @ 310 / 150 A. Two sparks*. Vacuum @ 2.32e-06T. Allow to stabilize.
Tuesday, July 02, 2019, 08:55: Auto-ramping TGHT to 350 A @ 4 A per min. Vacuum @ 1.08e-06T.
Tuesday, July 02, 2019, 09:05: TGHT @ 350 A. Vacuum @ 1.08e-06T
Tuesday, July 02, 2019, 09:07: Spark*
Tuesday, July 02, 2019, 09:16: Spark*
Tuesday, July 02, 2019, 09:24: Spark*
Tuesday, July 02, 2019, 09:38: Auto-cooling @ 4 A per min.
Tuesday, July 02, 2019, 09:45: BIAS / EE / EZL @ 0 kV.
Tuesday, July 02, 2019, 11:39: IG1 off. Turbos off. RGA off |