Restarting FEBIAD
Monday, October 29, 2018, 10:56: Restart roughing & Turbo pumps.
Monday, October 29, 2018, 11:03: Ion gauges on.
Monday, October 29, 2018, 11:10: Power on
Monday, October 29, 2018, 11:12: Gas lines opened to pump down with TS. Vacuum @ 1.20e-05T.
Monday, October 29, 2018, 11:20: RGA restarted.
Tuesday, October 30, 2018, 07:24: BIAS / EZL / EE @ 30 / 13.5 / 1.5 kV. Anode @ 200 V.
Tuesday, October 30, 2018, 07:26: Auto-ramping TGHT / TBHT to 580 / 320 A @ 2A per min.
Tuesday, October 30, 2018, 07:31: Optics set.
Tuesday, October 30, 2018, 07:32 : IV4 Opened.
Tuesday, October 30, 2018, 08:50: Auto ramping aborted. While the source does increment, the actual power supply does not. It's not actually ramping.
Tuesday, October 30, 2018, 08:51: Unable to bump up the coil either. Tapping down the all the voltage to 0.
Tuesday, October 30, 2018, 08:55: IV4 closed. Gases closed.
Tuesday, October 30, 2018, 08:57: Power shut off & restarted.
Tuesday, October 30, 2018, 09:01: Gases re-opened.
Tuesday, October 30, 2018, 09:03: Sources switched on. Manually bumped up TGHT & TBHT. No response.
Tuesday, October 30, 2018, 09:04: Gases closed. Sources off.
Tuesday, October 30, 2018, 10:41: IV4 Opened.
Tuesday, October 30, 2018, 10:47: BIAS / EZL / EE @ 30 / 13.5 / 1.5 kV. Anode @ 200 V. Voltage limits reset for the TGHT, TBHT, & Coil. Responses given
Tuesday, October 30, 2018, 10:49: Auto-ramping TGHT / TBHT to 580 / 320 A @ 2A per min.
Tuesday, October 30, 2018, 10:55: Optics reset.
Tuesday, October 30, 2018, 11:01: Gases reopened. Vacuum @ 4.52e-07T.
Wednesday, October 31, 2018, 06:59: Auto-ramping TBHT to 330 A @ 2A per min.
Wednesday, October 31, 2018, 07:00: Coil @ 50 A.
Wednesday, October 31, 2018, 10:57 : Mass & wire scans appear ok.
FM:
Wednesday, October 31, 2018, 12:10 : Auto-ramping TBHT to 340 A @ 1A per min.
Wednesday, October 31, 2018, 12:49 : Vacuum @ 5.90e-07T.
Wednesday, October 31, 2018, 12:54 : Auto-ramping TBHT to 350 A @ 1A per min.
Wednesday, October 31, 2018, 15:25 : Vacuum @ 6.03E-7T.
Wednesday, October 31, 2018, 15:28 : Auto-ramping TBHT to 360 A @ 1A per min.
Wednesday, October 31, 2018, 15:34 : Changing Gain in FC0 from 33 nA to 100 nA
Wednesday, October 31, 2018, 15:42 : Increasing Gain in FC0 from 100 nA to 1 uA.
Voltage drop from 200 to 196 V. The anode is current limited. Increasing the current limit on the anode from 100 mA to 110 mA .
Voltage back to 200 V
FM
Thursday, November 01, 2018, 11:35 : Optics set to the previous tune. Check entry 688.
Anode set to 150 V. FC6 stable
Thursday, November 01, 2018, 11:37 Closing Neon Valve
Thursday, November 01, 2018, 12:38 : FC6 stable. Closing Argon valve.
Thursday, November 01, 2018, 13:05 : Assuming 720 nA entering the source (from Brad). Efficiency measurement = 0.96%. Almost a factor of two larger than previous measurement with the same conditions!
Thursday, November 01, 2018, 13:08 : Opening the valves
Thursday, November 01, 2018, 15:41 : FC6 stable 5.38e-9A. Closing neon valve.
Thursday, November 01, 2018, 16:50 : FC6 stable overall 5.33e-9A. Closing argon Valve
Thursday, November 01, 2018, 18:42 : FC6 stable 1.44e-10A. efficiency= 0.72%
Opening gas valves
FM
Friday, November 02, 2018, 09:39 : Increasing AV to 200V.
Friday, November 02, 2018, 09:47 : Increasing anode current to 150 mA.
Friday, November 02, 2018, 18:01 : Coil sweep from 0-80 A for AV=25,50 completed. Efficiencies of 0.035 % and 0.34% respectively.
Leaving the cathode hot to continue test tomorrow morning.
Saturday, November 03, 2018, 18:01: Coil sweep from 0-80 A for AV=75,100 completed. Efficiencies of 0.56 % and 0.77% respectively.
Sunday, November 04, 2018, 09:01 : Anode current increased from 56 to around 95 mA overnight under the same conditions. This could indicate a cleaner surface on the cathode and hence a better emission or, the anode cathode distance is reducing fue to the thermal expansion.
Cooling down manually TBHT to 300 A @ 2A per min.
Monday, November 05, 2018, 09:00: Short on TBHT appeared around 8 am. Investigate.
Monday, November 05, 2018, 09:15: Auto-cooling TGHT / TBHT @ 2 A per min.
Monday, November 05, 2018, 14:22: Gas lines closed.
Monday, November 05, 2018, 14:32: Sources/power off.
Monday, November 05, 2018, 14:40: Short confirmed up top. RGA off.
Monday, November 05, 2018, 14:43: IV4 closed/reset, Ion gauge off, Turbos off. |