Friday, February 19, 2021, 13:28: Roughing
Friday, February 19, 2021, 13:43: Power on
Friday, February 19, 2021, 13:59: Turbos on
Friday, February 19, 2021, 14:07: IG1 on.
Friday, February 19, 2021, 15:06: Water open. No vacuum response.
Friday, February 19, 2021, 15:06: IG1 @ 3.13e-5 T.
Friday, February 19, 2021, 15:47 :
| Device |
Temp
[C] |
Flow
[lpm] |
| HS + MSP |
23.26 |
3.92 |
| TBHT |
23.09 |
6.15
|
| COIL + EE |
23.09 |
1.80 |
| TGHT |
23.02 |
5.06 |
Friday, February 19, 2021, 15:48: IG1 @ 1.65 e-5 T
Saturday, February 20, 2021, 09:19. IG1 @ 1e-6 T
Saturday, February 20, 2021, 09:20: Auto-ramping TGHT/TBHT to 300,150 A @ 2A/min
Saturday, February 20, 2021, 13:26: IG1 @ 1.78e-6 T
Saturday, February 20, 2021, 13:29: Anode @ 50 V. Coil @ 20 A.
Saturday, February 20, 2021, 13:52: Bias voltage only reaches 6 kV, the bias current seems a bit unstable, not sure now what the problem is.
Saturday, February 20, 2021, 14:58: Auto-cooling TGHT/TBHT to 0 A @ 2 A/min
Sunday, February 21, 2021, 11:24: Auto-ramping TGHT/TBHT to 580/290A @ 2A/min
Sunday, February 21, 2021, 16:39: Ramp up complete. IG1 @ 2.15e-6 T.
Will wait until vacuum is stable to try to put high voltage.
Sunday, February 21, 2021, 21:51: IG1 @ 2.06e-6 T. Unable to go above 5 kV.
Sunday, February 21, 2021, 22:00: Auto-cooling TGHT/TBHT to 0 A @ 2 A/min
Monday, February 22, 2021, 09:12: IG1@1.01e-7 T. Bias gets current limited as of 11 kV. The system does not spark so the current is leaking through somewhere.
Monday, February 22, 2021, 09:29: Grounding the TM2 F/T. No effects, same bias issues.
Monday, February 22, 2021, 11:3: the only way for this instabilities to occur is with a short between ground and HV. No such touch is occurring inside.
Monday, February 22, 2021, 11:37: Instability reacts with punching the cage, that is, shaking up the cage causes the instability to decrease.
Will re-accommodate the cage as it seemed slightly crooked, hence the motivation to punch it.
Monday, February 22, 2021, 14:00: Cage re-accommodated with the help of Aaron. Move a insulating cable that was touching a FT.
Monday, February 22, 2021, 14:30: Now sparks are visible between the coil/HS waterlines and ground waterlines (see pictures attached). I have to open the vacuum chamber.
Monday, February 22, 2021, 14:54: IG1 off. Turbos off.
Monday, February 22, 2021, 15:49: Venting
Monday, February 22, 2021, 16:43: Made clearance between HS/COIL to GND.
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