Thursday, March 14, 2024, 15:39: Roughing

Thursday, March 14, 2024, 16:20:TP1B on

Thursday, March 14, 2024, 16:40: TP1A on

Thursday, March 14, 2024, 16:51: IG1 on

Thursday, March 14, 2024, 17:28: Waterline FS#5 open

 Friday, March 15, 2024, 13:19:  Gradually increased BIAS to 25kV, then up to 50kV more slowly. Accompanied by increase in EZL voltage.

Friday, March 15, 2024, 13:50: Periodically increased BIAS voltage in 100V increments watching for sparks. Decrease BIAS whenever sparks. settled at 51.5 kV (cannot increase further without sparking), left at high voltage.

Friday, March 15, 2024, 15:48: Decreasing BIAS to 10kV 

Friday, March 15, 2024, 16:28: ran coil at 80A until vacuum recovered. 

Friday, March 15, 2024, 19:29: decrease coil to 0A, decrease BIAS to 0V

Monday, March 18, 2024, 10:08 increasing TGHT/TBHT to 440A/290A at 1A/30s

Monday, March 18, 2024, 16:00  increasing COIL to 40A, waiting for vacuum to return to normal 

Monday, March 18, 2024, 21:05:  decreasing COIL to 0A

Tuesday, March 19, 2024, 09:35: increased COIL to 40A.

Tuesday, March 19, 2024, 10:17: increased TDH:ANODE (cathode mode) to (-)200V

 Tuesday, March 19, 2024, 10:20: increasing BIAS to 30kV

Tuesday, March 19, 2024, 13:12:  turned on gas. vacuum jumped up and tripped everything off.  gas was immediately turned back off. TGHT and TBHT were off for approximately 1 minute before being turned back on.

Tuesday, March 19, 2024, 13:46:   cooling. need to investigate possible leaks. 

Tuesday, March 19, 2024, 15:58: TGHT and TBHT at 0A. Turbo pumps turned off. waiting to slow before venting.

 Tuesday, March 19, 2024, 16:20 venting

Wednesday, March 20, 2024, 14:47: Target assembly was removed today and the tube from the inlet to the calibrated leak was replaced. Now reinstalled, roughing. Gas was turned on at ~0.2 bar during roughing. No effect on vacuum.

           water cooling also turned on.

Wednesday, March 20, 2024, 14:53 Turbo pumps turned on.

Wednesday, March 20, 2024, 20:24: begin ramping TGHT TBHT to 440/290A at 1A/30s

Thursday, March 21, 2024, 09:54:    Target heated, vacuum good.   Tested gas to ensure there is no noticeable effect on vacuum. Lines subsequently vented through the line roughing pump.

Thursday, March 21, 2024, 09:55    Optics switched on. increasing cathode to 200V and coil to 40A. Watching vacuum, checking beam tune 

Thursday, March 21, 2024, 10:20   ramping BIAS to 30kV 

 Thursday, March 21, 2024, 11:14 : scanned, data recorded

Thursday, March 21, 2024, 11:14  cathode reduced to 100V. scanned 

Thursday, March 21, 2024, 11:32:  coil reduced to 20A. scanned. 

Thursday, March 21, 2024, 11:50  cathode increased to 200V. scanned 

Thursday, March 21, 2024, 12:07 coil increased to 40A.  Argon gas on (-0.8bar at regulator). scanned 

Thursday, March 21, 2024, 12:31  reducing bias to 0kV 

Thursday, March 21, 2024, 13:02 argon regulator pressure increased to -.64bar

Thursday, March 21, 2024, 13:05 increasing bias to 30kV

Thursday, March 21, 2024, 13:15:  vented lines, scanning

 Thursday, March 21, 2024, 13:35 gas on. scanning

 Thursday, March 21, 2024, 15:05 cathode at 100V, scanning

Thursday, March 21, 2024, 15:20 coil at 20A, scanning

 Thursday, March 21, 2024, 15:55 coil off. scanning

Thursday, March 21, 2024, 16:10 cathode off, scanning

 Thursday, March 21, 2024, 17:23  - bias down. changing gas pressure

Friday, March 22, 2024, 09:08   increasing bias, checking tune,  increasing cathode to 200V, coil to 40A, EZL to 13kV

Friday, March 22, 2024, 09:48  gas vented, scanned, gas on, scanned.

Friday, March 22, 2024, 09:48  decreasing bias to 0V, changing gas pressure.

Friday, March 22, 2024, 10:12 pressure at 1bar.abs.  increased bias to 30kV, checked beam tune, cathode to 200V, coil to 40A, EZL to 13kV

Friday, March 22, 2024, 10:13   gas on. scanning 

Friday, March 22, 2024, 10:33   decrease bias, changing pressure. 

Friday, March 22, 2024, 10:57 gas line pressure at 1.5bar.a.   increasing bias to 30kV, checking beam tune, cathode to 200V, coil to 40A, EZL to 13kV

Friday, March 22, 2024, 11:42 decreased bias, changing pressure.

Friday, March 22, 2024, 11:52 gas line pressure at ~2bar.a  increasing bias to 30kV, checking beam tune, cathode to 200V, coil to 40A, EZL to 13kV

Friday, March 22, 2024, 15:40  bias down to 0V. reducing TGHT TBHT to 0/0

 Monday, March 25, 2024, 09:30 Turbo pumps turned off

 Monday, March 25, 2024, 10:00 venting chamber, purged water lines.

 Monday, March 25, 2024,11:00 removed target assembly

 Monday, March 25, 2024,13:00 replaced target assembly, began roughing

 Monday, March 25, 2024,13:50: turned on water cooling. Vacuum stable. Turned on turbo pumps.

 Monday, March 25, 2024, 15:16   turned on optics elements, cathode to 200V, coil to 80A, EZL to 13kV. monitoring vacuum. Gas leak test shows no effect on vacuum (5e-6T).

Monday, March 25, 2024, 15:22: Ramping TGHT TBHT to 440/290A at 1A/30s

 Tuesday, March 26, 2024, 10:32 Ran mass scans with gas off and on. 

Tuesday, March 26, 2024, 10:32 scanning parameter space for optimal beam output - cathode voltage and coil current.

 Tuesday, March 26, 2024, 15:29 ramping TBHT to 300A, scanning

 Tuesday, March 26, 2024, 16:10 ramping TBHT to 310A, scanning

 Tuesday, March 26, 2024, 16:40 ramping TBHT to 320A, scanning

 Wednesday, March 27, 2024, 09:25 - ramping bias to 30kV

Wednesday, March 27, 2024, 09:40 scanning cathode / coil parameter space to optimize output --- highest output at 200V 60A - 200V 62A - magnet drifted and is not right at Ar peak. corrected. scan repeated

Wednesday, March 27, 2024, 10:31 scanning cathode / coil parameter space to optimize output 

Wednesday, March 27, 2024, 11:02   mass scan with 200V 62A cathode coil.

Wednesday, March 27, 2024, 11:17 - lines evacuated. mass scan.

 Wednesday, March 27, 2024, 11:40 bias to 0V.  change gas pressure

 Wednesday, March 27, 2024, 11:50 bias to 30kV.  mass scan

 Wednesday, March 27, 2024, 12:10 bias to 0V.  change gas pressure

 Wednesday, March 27, 2024, 12:21 bias to 30kV.  mass scan

 Wednesday, March 27, 2024, 12:31 bias to 0V.  change gas pressure

 Wednesday, March 27, 2024, 12:43 Ramping bias to 30kV. 

Wednesday, March 27, 2024, 15:00 bias to 0V. changing pressure to .5 bar.

Wednesday, March 27, 2024, 15:13 bias at 30kV.  

Wednesday, March 27, 2024, 15:13 increasing TGHT to 468A (~2250W) - mass scan - monitoring vacuum. stable at 6e-7T

Wednesday, March 27, 2024, 15:39 increasing TGHT to 490A (~2500W) - mass scan - monitoring vacuum. stable at 6e-7T

Wednesday, March 27, 2024, 16:23 reduced cathode voltage to 50V to record the electron current (17.09mA). mass scan taken with coil at 35A

Wednesday, March 27, 2024, 16:35 ramping down BIAS to 0V.

 Wednesday, March 27, 2024, 16:38  decreasing TGHT TBHT to 0A 0A at 1A/30s in preparation to switch to anode mode in the morning.

 Thursday, March 28, 2024, 13:59 - Switched to anode mode

Thursday, March 28, 2024, 13:59 - ramping TGHT and TBHT to 100A at 1A/30s

Thursday, March 28, 2024, 14:37 increasing BIAS to 30kV 

 Thursday, March 28, 2024, 14:47 - ramping TGHT/TBHT to 440A/290A at 1A/7s

Thursday, March 28, 2024, 15:56    mass scan with 200V 62A cathode coil. gas on at 0.5 bar. (bias at 29.8kV)

Thursday, March 28, 2024, 15:56    mass scan with 200V 62A cathode coil. gas vented. (bias at 29.8kV)

Thursday, March 28, 2024, 16:29     ramping TGHT/TBHT to 490A/320A at 1.4A/10s

Thursday, March 28, 2024, 16:36     mass scan with 200V 62A cathode coil. gas on at 0.5 bar. (bias at 29.8kV)

Thursday, March 28, 2024, 16:56     mass scan with 200V 62A cathode coil. gas vented. (bias at 29.8kV)

Thursday, March 28, 2024, 17:13      dropping bias to 0

Thursday, March 28, 2024, 17:14      cooling tght and tbht at 1A/30s

Wednesday, May 29, 2013, 12:09: Debiased to insert temp logger

Wednesday, May 29, 2013, 14:40: Temp logger installed

CH1 COIL
CH2 CTL Block

Wednesday, May 29, 2013, 14:51: Opening gas lines

Temperatures [deg C]
COIL: 190
CTL:   44

Wednesday, May 29, 2013, 15:31: Coil at 50A

Temperatures [deg C]
COIL: 212
CTL:   45

Thursday, May 30, 2013, 09:18: TGHT was voltage limited at about 570A. Increased voltage limit to 5.5V and raised current to 580A

Thursday, May 30, 2013, 09:20: Ramping TBHT to 280A

Thursday, May 30, 2013, 10:03

Temperatures [deg C]
COIL: 227
CTL:   48

Thursday, May 30, 2013, 10:07: Heard a noise from the vacuum chamber coinciding with a spike in vacuum on both gauges.

Monday, June 03, 2013, 08:54: Target debiased and gases off. Target cooling started in preparation for power outage tomorrow at 9am.

Wednesday, June 05, 2013, 09:57: Purging gas lines to vacuum chamber

Wednesday, June 05, 2013, 10:13: Target biased again. Started target heating.

Thursday, June 06, 2013, 13:23:

Temperatures [deg C]
COIL: 227
CTL:   48

Thursday, June 06, 2013, 16:45: TBHT increased ti 290A

Temperatures [deg C]
COIL: 230
CTL:   50

Friday, June 07, 2013, 08:40: Magnet found off. TPS:Q4 and TPS:Q2 found off.

Temperatures [deg C]
COIL: 227
CTL:   48

Friday, June 07, 2013, 14:21: Anode current limit increased to 500 mA. Adjusted magnet current. Increasing TBHT.

Friday, June 07, 2013, 16:24: TBHT at 296A

Temperatures [deg C]
COIL: 237
CTL:   50

Monday, June 10, 2013, 08:19 

Temperatures [deg C]
COIL: 232
CTL:   49

Monday, June 10, 2013, 16:55: COIL at 60A

Temperatures [deg C]
COIL: 244
CTL:   49

Tuesday, June 11, 2013, 08:42: TBHT voltage limited this morning at 291A

Temperatures [deg C]
COIL: 242
CTL:   49

Tuesday, June 11, 2013, 11:02: COIL at 70A

Temperatures [deg C]
COIL: 256
CTL:   49

Tuesday, June 11, 2013, 15:49: COIL at 80A

Temperatures [deg C]
COIL: 272
CTL:   49

Wednesday, June 12, 2013, 08:19:
 Short on TBHT - see attached photo.
T/C logger is is off.
Gas lines closed.
Cooling down target.
Target debiased.

Thursday, June 13, 2013, 08:37: Turbos stopped.

Thursday, June 13, 2013, 09:20: Water lines purged.

Thursday, June 13, 2013, 09:41: Venting

Thursday, June 13, 2013, 10:19: Target removed

Ceramic coated coil development target removed. CTL Febiad target installed.

Roughing chamber.

Purged the gas lines, turned on the HV and started the heaters for CLT FEBIAD: TGHT up to 580A and TBHT up to 230A.

Recent tests have shown that CATHODE voltage breaks down at ~130V, continually leaking current and progressively dropping voltage, making febiad CATHODE testing impossible.

Thursday, January 23, 2025, 15:18    disconnected cathode wire from TBHT feed through, simply suspended in cage.

voltages are held for ~1min prior to increase. current will be reported after 1min and stable.

100V - 0.000mA

120V - 0.000mA

130V - 0.000mA

140V - 0.000mA

150V - 0.000mA

170V - 0.000mA

200V - 0.000mA

- the Cathode wire and power supply have no leak problem

Thursday, January 23, 2025, 15:42

Reattached the CATHODE line to TBHT feedthrough. Removed the 100||100kΩ resistor pair that connects TBHT to HVC.

Same process as before:

100V - 0.000mA

120V - 0.000mA

125V - 0.000mA

130V - 0.000mA

135V - 0.000mA

140V - current limit ---> dropped to 52V

-- The TBHT resistor pair is not the problem

venting chamber to investigate lines.

Thursday, January 23, 2025, 17:05

removed piece of broken ceramic that held the coil terminal

still current leaking, but it's not as immediate or as shorted. more resistive.

__V__mA__

30    0

35    2.4

40    6.1 

45   12.2

50   19.5

55   32

60   gradually ramped up to limited

Thursday, January 23, 2025, 17:10

Disconnected COIL terminal.  Behaviour still similarly bad. Doesn't seem to have improved.

Disconnected all TBHT and TGHT feedthroughs. ALL are now isolated from ground (AS BEFORE). TBHT + and - are isolated from all others, TGHT + and - are isolated from all others but 100R apart due to resistor at feedthroughs (as expected).

Increasing CATHODE voltage on TBHT+ feedthrough to test isolation.

V ____ mA

120  ___ 0

135 ____ 0

150 ____ 0

200 ____ 0

- The TBHT+ terminal does not leak directly to ground

Connecting CATHODE cable to TBHT(-) feedthrough to test

V___mA

130 __ 0

150 __ 0

200 __ 0

- the TBHT- terminal does not leak directly to ground.

Connecting CATHODE to TGHT+ feedthrough , and disconnected the 100R between - and +

V ___ mA

100 __ 0

150 __ 0

200 __ 0

- the TGHT + terminal does not leak directly to ground

Connecting CATHODE to TGHT-  feedthrough:

V __ mA

125 __ 0

150 __ 0

200 __ 0

- the TGHT- terminal does not leak directly to ground.

connected cathode cable to TBHT+ cable.

V __ mA

30 __ 0

40 __ 0

50 __ 12

60 __ 35

70  -> 60__ 80 current limited

Disconnected 100R path between TBHT and TGHT power supply

CATHODE cable still on TBHT+ cable

V __ mA

150 __ 0

200 __ 0

TBHT is not the problem

reconnected 100 path from TBHT to TGHT.  REMOVED varistors that connect TGHT to ground

V __ mA

100 __ 0

200 __ 0

These are likely the issue.

Reconnected varistors to confirm

SHORTED at 50 V -- 10mA, 65V gives 80mA, current limited.

Removed varistors.  WIll have to acquire appropriately specced ones

Problem: Some devices turn off unexpectedly and sometimes without any obvious trigger. In the past, the only time this was an issue was during mass scans. Now with the automation of measurements, this is a major problem as it prevents longer parameter scans.

Thursday, August 05, 2021, 08:00: Kevin setup the CANBUS snooper by hooking it up on the magnet card loop port.

This device tracks the network so if any error happen it will be captured.

Thursday, August 05, 2021, 09:39: Test unsuccessful. No device turned off (I should be happy XD)

Thursday, August 05, 2021, 09:40: Will run the test another time

A PC was setup near the old magnet power supply (20210806_150334.jpg ). One of the software run smoothly but the other more useful one fails to connect to the usb adapter.

 Friday, August 06, 2021, 14:52: Fixed issue with  the usb adapter. With this, the CANBUS traffic can be store and inspected to catch any error on the communication (Annotation_2021-08-06_144737.png).

Friday, August 06, 2021, 14:53: Loggers are running. 

 Friday, August 13, 2021, 11:07: I forgot to input the feedback  from Kevin:

"33 errors out of 10,300,00 transaction seems statistically insignificant to me. "

From the devices tripped,

"Most of the tripped supplies are located on the front side of the rack, the original test stand controllers"

So maybe the issues could be

"Compatibility issues with the old and new? The newer supplies are all daisy chained, should we upgrade these to the tap boards?

Should the old controllers (original test stand appear to be MK supplies) be upgraded (do we have enough)?"

2 C-Seals installed with SS springs on water blocks. The SS springs are also used in the module.

Long pkg seal (A):

T: 0.098" x 0.429" Diameter.

Installed on line FS#5 , Block L, Heat shield cooling block. (Top seal, bottom seal of 2 is still the rubber O-ring)

Short pkg seal (B):

T: 0.095"  x 0.424" Diameter.

Installed on line FS#3 , Block G, Coil cooling block.

All the waterlines are purged and shut. Open individually and monitor for leaks.

Tuesday, May 08, 2018, 10:27: Roughing

Tuesday, May 08, 2018, 10:31: Both BV1A & BV1B are open.

Tuesday, May 08, 2018, 10:57: Turbo Pumps started.

Tuesday, May 08, 2018, 11:03: Ion gauge on.

Tuesday, May 08, 2018, 11:15: RGA started.

Tuesday, May 08, 2018, 13:30: Vacuum @ 3.14e-06T

Wednesday, May 09, 2018, 06:48: Vacuum 5.13E-07T. RGA ok. 

Wednesday, May 09, 2018, 06:50: Hook up Leak Detector. Leak detector # 5 (DRY) from Vacuum Group. Startup

Baseline Reading:

TP pressure 0.0e-04

Leak rate: Below 0.0e-09 atm-cc/sec

Valve to chamber opened. LD connection clear.

LD: 1.3e-08 atm-cc/sec

He TEST:

Wednesday, May 09, 2018, 07:00: Purge both lines with He. Do not pressurize.

Vacuum @ 5.13e-07T. RGA status:

Water @ 3.22e-007

He:-1.93e-009

LD: 1.3e-08 atm-cc/sec

Wednesday, May 09, 2018, 07:15: Open line FS#5 to heat shield. Pressurize to 30 PSI.

Wednesday, May 09, 2018, 07:40: Vacuum @ 5.02e-07T. RGA status:

Water @ 3.13e-007

He:-1.67e-009

LD: 9.3e-08 atm-cc/sec. Purge and close FS#5.

Wednesday, May 09, 2018, 07:45: Open line FS#3 to Coil block. Pressurize to 30 PSI.

08:10: Vacuum @ 4.9e-07T. RGA status:

Water @ 3.08e-007

He:-1.61e-009

LD: 1.5e-07 atm-cc/sec

Wednesday, May 09, 2018, 08:15: Depressurize lines. Connect HPA. 

Wednesday, May 09, 2018, 08:20: Vacuum @ 4.76e-07T. RGA status:

Water @ 3.05e-007

He:-1.68e-009

LD: 1.7e-07 atm-cc/sec

08:25: LD: 1.7e-07 atm-cc/sec. Close Valve & disconnect LD

Water & Cycling TEST:

Wednesday, May 09, 2018, 08:45: Vacuum @ 4.67e-07T. RGA status:

Water: 3.02e-007

Open lines FS#2 and FS#4

Wednesday, May 09, 2018, 08:55: Vacuum @ 4.65e-07T. RGA status: Water @ 2.97e-007

Close lines FS#2 and FS#4. Water filled.

Open line FS#5 to heat shield.  Vacuum and RGA ok.

09:00: Begin C-Seal (A) shock cycling. 20 cycles @ 5 min apart.

Close Supply/Return, Open Supply/Return to 'Shock'

Wednesday, May 09, 2018, 10:40: Close line FS#5. Vacuum @ 4.49e-07T. RGA status: Water @ 2.84e-007

Open line FS#3 to Coil block.  Vacuum and RGA ok

10:45: Begin C-Seal (B) shock cycling. 20 cycles @ 5 min apart

Close Supply/Return, Open Supply/Return to 'Shock'

12:25: Open FS#5 and leave FS#3 open. Status Vacuum @ 4.32e-07T . RGA status: Water @ 2.70e-007

13:00: Status Vacuum @ 4.30e-07T . RGA status: Water @ 2.67e-007

Wednesday, May 09, 2018, 14:24: Status Vacuum @ 4.21e-07T . RGA status: Water @ 2.52e-007

Thursday, May 10, 2018, 07:41: Status Vacuum @ 3.24e-07T . RGA status: Water @ 1.76e-007.

Purge all water from lines. Prep for He.

Hook up Leak Detector. Leak detector # 5 (DRY) from Vacuum Group. Startup

Thursday, May 10, 2018, 08:00: Baseline Reading:

TP pressure 0.0e-04

Leak rate: Below 0.0e-09 atm-cc/sec

Vacuum @ 3.15e-07T . RGA status: Water @ 1.65e-007.

Valve to chamber opened. LD connection clear.

Leak rate:  1.6e-08 atm-cc/sec

He TEST #2:

Thursday, May 10, 2018, 08:13: Purge both lines with He. Do not pressurize.

Vacuum @ 3.15e-07T. RGA status:

Water @ 1.76e-007

He: -1.51e-009

LD:  1.5e-08 atm-cc/sec

Thursday, May 10, 2018, 08:15: Open line FS#3 to Coil Block. Pressurize to 30 PSI.

Thursday, May 10, 2018, 08:40: Vacuum @ 3.22e-07T . RGA status:

Water @ 1.80e-007

He:-1.98e-009

LD: 7.1e-08 atm-cc/sec. Purge and close FS#3.

Thursday, May 10, 2018, 08:45: Open line FS#5 to Heat Shield. Pressurize to 30 PSI.

Thursday, May 10, 2018, 09:10: Vacuum @ 3.22e-07T. RGA status:

Water @ 1.79e-007

He:-1.39e-009

LD:  1.5e-07 atm-cc/sec

09:15: Depressurize lines. Connect HPA. 

09:30: Vacuum @ 3.22e-07T . RGA status:

Water @ 1.78e-007

He:-1.56-009

LD:  1.7e-07 atm-cc/sec

Thursday, May 10, 2018, 09:32: Close Valve & disconnect LD

Thursday, May 10, 2018, 09:35: Opened all waterlines completely. Vacuum stable @3.22e-07T and no response on the RGA.

Tuesday, May 15, 2018, 06:06: Auto ramping TGHT / TBHT to 580 / 270 A @ 2A per min.

Tuesday, May 15, 2018, 06:13: BIAS / EZL / EE @ 30 / 13 / 1.5 kV .

Tuesday, May 15, 2018, 06:17: Optics set. IV4 opened.

Tuesday, May 15, 2018, 08:35: RGA Restarted. Spikes noticed on BIAS current. Vacuum @ 2.57E-06T

Wednesday, May 16, 2018, 06:40: TMS:IG6 (between 3-4pm yesterday) and the RGA were both knocked out. Restarting both.

Wednesday, May 16, 2018, 06:48: Repeated attempts to reset/restart IG6 have failed. Closing IV4

Friday, May 18, 2018, 10:55: Auto-cooling @ 1A per min. IG6 still non-responsive.

Tuesday, September 14, 2021, 17:00: Roughing

Tuesday, September 14, 2021, 17:37: TP1B on.

Tuesday, September 14, 2021, 17:47: TP1A on.

Tuesday, September 14, 2021, 17:55: IG1 on.

Wednesday, September 15, 2021, 06:51: Waterlines opened. Vacuum Stable @ 4.46e-06T.

Wednesday, September 15, 2021, 07:01: Power/sources/optics on - Set.

Wednesday, September 15, 2021, 07:02: IV4 opened.

Wednesday, September 15, 2021, 07:05: Quick system check. TGHT / TBHT @ 10 / 10 A. OK.

Wednesday, September 15, 2021, 07:06: BIAS / EE / EZL @ 1 / -0.5 / 1 kV. Not ok. BIAS short!!!* set to 1kV, zero read back. 0V & 0.230 mA.

Wednesday, September 15, 2021, 08:01: Hook was still in the cage. Removed*

Wednesday, September 15, 2021, 08:05: Quick system check. TGHT / TBHT @ 10 / 10 A. BIAS / EE / EZL @ 1 / -0.5 / 1 kV. All ok. Vacuum @ 4.02e-06T. Allow to stabilize.

Thursday, September 16, 2021, 04:38: Vacuum @ 2.13e-06T. Auto-ramping TGHT / TBHT to 350 A / 150 A @ 2 A per min. 

Thursday, September 16, 2021, 04:44: BIAS / EE / EZL @ 20 / -1.0 / 10 kV. 

Thursday, September 16, 2021, 08:58: Auto-ramping TGHT / TBHT to 580 A / 230 A @ 2 A per min.  

Thursday, September 16, 2021, 13:20: Auto-ramp halted. Vacuum @ 3.12 e-06T. TGHT / TBHT @ 410 / 210. Adjusted good vacuum / increment limit t0 5.0e-06T & 7e-06T (Back off limit). Continue auto-ramping TGHT / TBHT to 580 A / 230 A @ 2 A per min.  

Thursday, September 16, 2021, 16:30: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. TGHT / TBHT @ 543+/ 230 A. TGHT still ramping on vac limit. Good wire scans so far.

Thursday, September 16, 2021, 16:36: Mass & wires scans proceeding.

Thursday, September 16, 2021, 17:16: Scans ok. TGHT @ 550 A. Vacuum @ 5.12e-06T.

Friday, September 17, 2021, 10:41: Mass & wire scans ok. BIAS / EE / EZL to 0 kV. 

Sunday, September 19, 2021, 20:33: Auto-cooling @ 1 A per min. 

Monday, September 20, 2021, 06:10: Power/sources off. IV4 off. Lock-out.

Monday, September 20, 2021, 06:13: IG1 off. Turbo pumps off.

Thursday, September 23, 2021, 05:04: Venting. 

The ground connection between B and F (ISK4523D Rev 6) was found burnt off. It will be switched out as per CATHODE BIAS configuration (ISK4563D Rev 3) by Ray D.

Tuesday, June 25, 2019, 16:15: While inspecting the 9-pin connection with Ferran, it was noticed how two braided cables were burnt out pretty bad to the point they were separated in half (see attached pictures).  Additionally the plastic insulator for the anode wire was melted.

Tuesday, June 25, 2019, 16:30: Braided cables need to be changed and anode wire redone. 

Tuesday, June 25, 2019, 17:16: Wondering if this happened during TM4 source tray conditioning given the following entries in the elog (entry 725):

Monday, June 03, 2019, 09:51: BIAS down to 50 kV. Burnt plastic smell lingering. Wait* 

Tuesday, June 04, 2019, 10:29: Note* Minute fluctuations of Anode current have ended after the spark. Also slight 'Burnt' smell noticed around the test stand area.

Pressure:

Ramping up:

• Second attachment - bias at 50kV
• Third attachment - bias at 60kV
• Fourth attachment - bias at 65kV

Pressure has been slowly falling since we started this test - now down to 8.7e-7

Spark after 10 mins, see attachment 5. Very slight vacuum jump (8.5e-7 -> 1.2e-6) and bias current jump (36uA -> 113uA). Tripped TP6 and the steerers, as usual. Bias current read back more erratic afterwards (see sixth attachment).

System has been stable for 20mins, though current on bias is still more erratic than before the spark. Increasing He leak rate from 7 to 7.06 to bring vacuum back up to 2e-6 (see attachment 7). No effect from increased pressure.

Tuesday, March 13, 2018, 05:52: Power off.

Tuesday, March 13, 2018, 05:56: Waterlines purged

Tuesday, March 13, 2018, 05:57: Ion gauge, Turbos off.

 Tuesday, July 02, 2019, 18:24: A blind is installed  on the FEBIAD gas line (see attached picture)  to rule out the possibility of  gases entering the TIS.

The power supplies were "de-dusted" yesterday by Ray Dube and team. 

Wednesday, July 24, 2024, 14:07   Changed beamline window to DUV window (window at magnet for target source viewing)

Vented beamline and removed ARIEL emittance meter. In the process of swapping components, beamline left vented until Monday when we will finish the job.

Tuesday, August 25, 2020, 07:07: Beam line side of the TS appears to have tripped? Open BV6 & BV2.

Tuesday, August 25, 2020, 07:15: Beam line side TP6 & TP2 on.

Tuesday, August 25, 2020, 07:16: Venting Chamber side

Trip appears to have occurred at 6am on Saturday.

Contacted MCR. Power bump occurred.

Backing pressures TSG:CG1A/B are fluctuating between 0.02 and 0.05 since Sept 17th at ~17h. Expected values <0.01.

Pressure around 140 mTorr. The pressure started increasing early November 2nd. Will continue to monitor.

Tuesday, November 12, 2013, 09:51 UPDATE
 Backing pressure further increased to ~ 350 mTorr over the weekend. Vacuum group has been informed and will replace the pump this week.

 The backing pump (TSG:RP1) was replaced yesterday by Anthony Ip. Backing pressure is down to 1 mTorr on TSG:CG1A

TSG:RP1 backing line pressure is >200 mT. An e-fault has been submitted to have the roughing pump replaced.

Friday, April 24, 2015, 13:13: Pump replaced by vacuum group.