Tuesday, September 20, 2011:

Did another mass scan today at 5:40. Saved as: plotdump-local-clean.txt Sept 20 11 11-51-20.txt

Started target cool-down. Tomorrow the target would be ready to be removed from the Test Stand.

Wednesday, September 21, 2011:

Turned off the HV & optics.

Target is ready to be removed. Currently, it's under vacuum and the water is still on.

Tuesday, December 12, 2023, 16:07  - Pumping down test stand overnight for testing tomorrow. vacuum good, turbos starting now. Four thermocouples attached inside. tc1: high on (+) TGHT leg, pins 1+2. tc2: at target terminal (+), pins 4+5. tc3: at target terminal (-), pins 6+7. tc4: low on (+) TGHT leg, pins 8+9.

 Wednesday, December 13, 2023, 09:32 : Vacuum at 8.2e-7 T.  Electrical team is finishing connecting the cables. Claim it will be complete at 11am.

 Wednesday, December 13, 2023, 11:41Started both tc loggers at 11:40 - important for offset time. Beginning ramp as well on ATTS TGHT. set vacuum values high at 1e3 1e4 to bypass ATTS interlock, which does not apply here. ramping to 600A with step increment 10A and wait interval 10s.

    ATTS TGHT claims ramping in progress, but increased voltage is reported only on the autoramp window, which reports increasing the target amperage by 10A each 10s. However, no increased voltage reading is reported there, nor is there any increased current. ATTS:TGHT:RDCUR and ATTS:TGHT:RDVOL are ~0 as well. No increased temperature on any of 6 tc channels.

Wednesday, December 13, 2023, 11:57 ATTS TGHT power supplies appear to be under local control. It also appears (low current right now) that the value reported in EPICS is 1/3 of the value reported on the master power supply. It may be that the epics value is per output of the individual 3 supplies, while the total output is reported on the PS display. Planning to now increase to 300A and reach steady state.

Wednesday, December 13, 2023, 12:13 : 1/3 ratio idea confirmed at 33A EPICS reading / 100A master reading and again at 100A EPICS reading / 300A master reading. 300A now reached. Waiting for 20min. Temps inside ~ 21°C. Temps on feed through terminals ~22°C

 Wednesday, December 13, 2023, 12:26:  200epics 600A master. tc out: 23.0, 22.6. tc in: 21.4 21.7 22.0 20.8.  waiting

Wednesday, December 13, 2023, 12:36  No temp change over 10 min. increasing to 900A

 Wednesday, December 13, 2023, 12:47: 900A. outside tc 24.5 23.7°C. inside tc 21.7 23 23.6 21.0 °C.

Wednesday, December 13, 2023, 13:04: increasing to 1200A

Wednesday, December 13, 2023, 13:11  1200A. outside tc 27.1 25.4. inside tc 22.6 24.8 25.9 21.7 °C. Will wait to observe stability

Wednesday, December 13, 2023, 13:20 after ~10min. outsideTC: 27.6 25.9. insideTC: 22.5 25.2 26.1 21.8 °C.  Temperatures appear stable. increasing to 1300A

 Wednesday, December 13, 2023, 13:25   at 1300A. outsideTC: 28.3 26.5, insideTC: 22.8 25.7 26.8 21.8.   waiting for stability

 Wednesday, December 13, 2023, 13:38 after ~10min, outsideTC 29.1 27.1, insideTC 23.2, 26.2, 27.4, 21.9.  stable. Increasing to 1400A

 Wednesday, December 13, 2023, 13:41:   1400A. outsideTC 29.8, 27.6. insideTC 23.4 26.7 28.2 21.4

Wednesday, December 13, 2023, 13:50     temps look stable 30.1 27.9,     23.3 27.7 28.4 21.4 .    going to increase to 1500A   ---- turning off turbo pumps in case of failure at high current

 Wednesday, December 13, 2023, 13:57    at 1500A. temps:   30.9 28.3.  23.6 27.2 28.9 21.8 .

 Wednesday, December 13, 2023, 14:07  temps look stable:   31.5 28.8...   23.6 28.0 29.4 22.0     going to increase to 1600A

 Wednesday, December 13, 2023, 14:10    at 1600A     temps:  32.0 29.1..... 23.8 28.2 30.0 22.2

 Wednesday, December 13, 2023, 14:20   temps stable: 32.8 29.7,    23.9 28.9 30.6 22.2,.  increasing to 1700A

 Wednesday, December 13, 2023, 14:24 at 1700A    temps:  33.5 30.2       24.3 29.3 31.5 22.4

 Wednesday, December 13, 2023, 14:35  temps stable :   34.2 31.0       24.3 30.0 32.0 22.6 increasing to 1800A

Wednesday, December 13, 2023, 14:38  at 1800A. temps:    35.0 31.3      24.6 30.3 32.7 22.8

 Wednesday, December 13, 2023, 14:47  temps:   35.8 32.0      24.7 31.2 33.3 22.8

 Wednesday, December 13, 2023, 14:58   temps stable. 36.0 32.2    24.7 31.2 33.3 23.1       turning down power supply

 Wednesday, December 13, 2023, 15:23 power supply off. strip tool data dumped to test1.txt --- copy this elsewhere. TCs left to continue monitoring for any additional cooldown.

Wednesday, December 13, 2023, 16:13    tc recording stopped.

repeat test

Thursday, December 14, 2023, 15:18    tcs start time

Thursday, December 14, 2023, 15:20  increasing TGHT from ATTS directly to 1500A and waiting for steady state temperature. Aiming for similar ramp rate to previous ~1A/s, 60A/min.   tcs at cold read 21.9 21.9... 21.1 20.9 20.9 20.7

 Thursday, December 14, 2023, 15:39  at 1500A

Thursday, December 14, 2023, 15:50   after~10min, temps at 31.3 28.4... 23.6 27.6 29.1 22.3

 Thursday, December 14, 2023, 15:59 after ~20min, temps at 31.5 28.6.... 23.5 27.5 28.8 22.5.    stable.  increasing to 1800A

 Thursday, December 14, 2023, 16:03  at 1800A 

Thursday, December 14, 2023, 16:14   after 10min - 35.8 31.8      24.7 30.8 32.6 23.1

 Thursday, December 14, 2023, 16:25  after 20min - 36.3 32.2     24.7 30.9 32.6 23.4    stable.   decreasing current.

Thursday, December 14, 2023, 16:42    0A... cooling for a while

 Thursday, December 14, 2023, 16:56  22.8 22.8    21.1 21.0 21.2 20.8

The system was vented to  make clearance on the waterlines as a very small continuous discharge was observed.

The inspection revealed some marks on the HS water line (sideview photo). From the the bottom and from real close (zoom and backview photo) the marks are quite noticeable with shinny copper in the middle and dark circles around.

The GND line is routed in such a way that sits on top of the ion gauge chamber (gnd-ig1) this could explain why the vacuum had small oscillation during the current limited events.

Moreover, the GND line has the steerer cables tied to it, this could explain why one of the steerers got affected after the sparks.

Also, the GND line is in contact with a dark grime that goes all the way into the first skimmer (gnd-quad). I think the grime observed inside the test stand might have become conductive, or if this is trace from a previous flashover, this  is good path to flash again.

The EE and the plasma electrode were removed and they show signs of buildup. Cleaned and reinstalled

Friday, November 01, 2019, 15:47: A symbiotic  peek seal assembly  was installed on the manipulator grip to verify the temperature at high voltage and high current.

Friday, November 01, 2019, 15:48: Three  thermocouples added for temperature readings.

Friday, November 01, 2019, 15:47: Roughing

Friday, November 01, 2019, 16:19: Turbos on.

Friday, November 01, 2019, 16:27: IG1 on.

Friday, November 01, 2019, 16:29: RGA on.

AS

Monday, November 04, 2019, 07:41: Waterlines opened. No response on RGA. Vacuum ok @ 3.97e-07T.

Monday, November 04, 2019, 07:44: Power / sources on.

Monday, November 04, 2019, 07:47: Auto-ramping TGHT to 300 A @ 2 A per min.

Monday, November 04, 2019, 10:57: Auto-ramping TGHT to 400 A @ 2 A per min.

FM

Monday, November 04, 2019, 12:11: Auto-ramping TGHT to 500 A @ 2 A per min.

Monday, November 04, 2019, 13:35: Auto-ramping TGHT to 600 A @ 2 A per min.

Monday, November 04, 2019, 14:48: Bias/EE/EZL @ 30/1.5/13 kV.

Monday, November 04, 2019, 15:03: Bias/EE/EZL @ 40/2.0/17 kV.

Monday, November 04, 2019, 15:04: Sparks observed after reaching 40 kV. TMS:TP6 down. Back down to 32 kV.

Monday, November 04, 2019, 15:04:  Bias to 40 kV. One spark only. Seems stable now.

Sparks occurred sparsely. Max time without a spark was 26 minutes.

Monday, November 04, 2019, 16:09: Bias/EE/EZL @ 30/1.5/13 kV.

Monday, November 04, 2019, 16:16: RGA restart.

AS

Tuesday, November 05, 2019, 08:30: RGA Restarted.

Tuesday, November 05, 2019, 08:32: Begin bringing up HV to 35 kV on BIAS.

Tuesday, November 05, 2019, 08:35: BIAS / EE / EZL @ 35 / 1.8 / 15 kV.

Tuesday, November 05, 2019, 08:55: No sparks after 20 minutes. Move up to 40 kV.

Tuesday, November 05, 2019, 08:59: BIAS / EE / EZL @ 40 / 2.0 / 20 kV.

Tuesday, November 05, 2019, 09:34: Audible Spark*. Restart TSG: CB1, VCB1, CBCx2. Reset & restart turbo pump. TMS:TP6. Appears on EZl cur.

Tuesday, November 05, 2019, 09:37: RGA off. Leave it off.

Tuesday, November 05, 2019, 09:38: Audible Spark* but not loud at all. Restart TSG: CB1, VCB1, CBCx2. Reset & restart turbo pump. TMS:TP6.

Tuesday, November 05, 2019, 10:00: BIAS / EE / EZL @ 35 / 1.8 / 17.5 kV.

Tuesday, November 05, 2019, 10:06: BIAS / EE / EZL @ 0 / 0 / 0 kV.

Tuesday, November 05, 2019, 10:07: Auto-cooling TGHT to 500 A @ 4 A per min.

Wednesday, November 13, 2019, 07:29: Turbo pumps & ion gauge off. RGA was already off.

Friday, November 15, 2019, 08:43: Venting.

Wednesday, October 09, 2024, 11:28   Target loaded, remote power supply added for mass marker, negative channel on pin 5, positive channel on pin 7.

Wednesday, October 09, 2024, 11:50   roughing

 Wednesday, October 09, 2024, 12:51   Turbo pumps TP1A TP1B on

 Thursday, October 10, 2024, 09:27:   Water cooling turned on. no effect on vacuum (2.6e-6T)

Thursday, October 10, 2024, 09:45:   Increasing TGHT TBHT to 150/150A at 1A/30s

Thursday, October 10, 2024, 11:07    TGHT TBHT at 120/120A  .   increasing TGHT TBHT to 580/230 at 1A/10s 

Thursday, October 10, 2024, 12:29   during the current increase, when TBHT was at 230 and TGHT reached ~460, the TBHT current began decreasing. Upon inspection, the TBHT voltage is higher than normal and hitting its limit. It may be that there is another current path. that is, it may be shorted. 

as TGHT increases, TBHT voltage continues to increase.   TGHT voltage is similarly higher than usual, at 6V to deliver 500A.

on another note, the vacuum value has been increasing slowly throughout heating, possibly due to the presence of indium within the mass marker reservoir, or simply because this target has not been hot for some time. Leaving TGHT at 502A for the time being.

Thursday, October 10, 2024, 13:34    Increasing BIAS/EE/EZL to 30/2.5/13 kV. 

Thursday, October 10, 2024, 14:27  beginning mass scan - reservoir at 0 A. (reservoir contains solid Indium)    - mass scan res In 0A

 Thursday, October 10, 2024, 15:19   increased current through reservoir with magnet sitting at mass 115 - noticeable increase in Indium presence in beam beginning at ~2.5A. Brought res current to 3.0A, waited for FC6 current to plateau.- at 5e-10A

Thursday, October 10, 2024, 15:27   mass scan run again

Thursday, October 10, 2024, 15:57   res current decreased to 0A

Thursday, October 10, 2024, 15:57  dropping voltages to 0V 

Thursday, October 10, 2024, 16:12  voltages at 0, decreasing TGHT TBHT at 1A/30s 

ABC 123 blah blah blah...

link to old e-log

See attached file for photos of the broken tube 

Test stand vented

Friday, September 23, 2011, 16:3: The connection on the 9-pin connector for FEBIAD targets showed burn marks from the previous FEBIAD tests. Corresponding mark was found on the connector on the target side. Because of this the upper and lower 9-pin connectors were swapped to have a clean connector for the next FEBIAD target.

Anders Mjos wrote:

Friday, September 23, 2011, 16:3: The connection on the 9-pin connector for FEBIAD targets showed burn marks from the previous FEBIAD tests. Corresponding mark was found on the connector on the target side. Because of this the upper and lower 9-pin connectors were swapped to have a clean connector for the next FEBIAD target.

 See attachment#1: 9-pin-connector.jpg 

• While testing SiC#26 a leak was discovered on the water line to the heat shield. The leak was in the right joint (see attachment). The heat shield water lines were removed from the test stand and repaired in the Machine Shop. 
• Kapton was added to the FEBIAD coil line to prevent it from shorting to the target heater line (see attachment).

The gas system has been checked. The variable valve opens at about 7.55 very fast. Please be careful when using it. Stepsize for opening around this value should be 0.01. Gas lines have been pumped with pump in the high voltage rack. Ne leak was opened to release pressure.

test stand vented

Rick Maharaj wrote:

test stand vented

 Thursday, October 13, 2011, 15:40: Pumping down

Friday, October 14, 2011, 10:00: Cooling water is on. Pressure increase from 8e-7 to 3e-6 torr. Venting.

Friday, October 14, 2011, 11:10: Replaced seals on cooling lines with new silver plated SS seals. Pumping down.

Friday, October 14, 2011, 13:25: Cooling water is on. Vacuum at 1.35e-6 torr.

Monday, October 17, 2011, 09:00: Vacuum at 5.4e-7 torr. target ready to be heated.

Variable leak valve with serial number F3-592 has been replaced by F3-649 due to regulating problems described previously by Fridhelm Ames.

Anders Mjos wrote:

Variable leak valve with serial number F3-592 has been replaced by F3-649 due to regulating problems described previously by Fridhelm Ames.

 The variable leak valve F3-592 has been repaired. Contaminated diaphragm was replaced. See attachment for details.

Evgeniy rebooted the ISAC Test Stand IOC. Re-started EPICS at the Test Stand.

Found all 4 turbo pumps off and their backing valves closed. Re-started the pumps.

In January Controls will install a new firewall for ISAC Test Stand. Until then ISAC Test Stand can be used, but it may require an IOC reboot once in while.

Anders Mjos wrote:

Anders Mjos wrote: Variable leak valve with serial number F3-592 has been replaced by F3-649 due to regulating problems described previously by Fridhelm Ames.  The variable leak valve F3-592 has been repaired. Contaminated diaphragm was replaced. See attachment for details.

 The leak valve has been tested with He and a leak detector. The leak valve could regulate in the complete range of the leak detector. 10^-11 to 10^-4 atm cc/s