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ID |
Date |
Author |
Subject |
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360
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Wed Mar 2 01:24:48 2022 |
David, George | Ion Source Update | 02:25
Zoran was unable to ignite the ion source.
He has given some parameters to the control room so they can wiggle stuff around and try and ignite it.
He also said it may at some point ignite itself.
In worse case scenario, the person who usually manages the ion source will come in from 7am-8am, read Zoran's notes and try and get it working again.
Also target density seems a little worse but still hanging above 2e-8 to 2e-4 |
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359
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Tue Mar 1 23:43:15 2022 |
David, George | Beam Intensity Drop | 00:38
Intensity in the ring dropped by 2 orders of magnitude to 5e5 on injection
Lost rutherford rate (as seen in last e-log post)
All pressures seem fine
00:48
Called main control room, said they will take a look
00:59
Servo motor control restarted and homed
01:11
Ion source is confirmed to be off
Zoran will try and fix it, should take 1hr or so and not guaranteed to work.
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358
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Tue Mar 1 23:30:04 2022 |
David, George | Current status | 00:30
Pressure in S1 slightly decreased from before but still high enough to measure data.
One new count at 20MeV
Target density at S1: 2e-8 - 2.7e-8
Pressures OK (one small spike just before 00:00 in YR08)
System Checks OK
White rabbit fail diff: 49
Data write speed: ~1.4Mb/s
Beam intensity at injection: ~7.7e7
Cryo Temp Setpoint: 110K
(Beam intensity in ring dropped as I was writing which is why there is no rutherford peak on exRate image)
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357
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Tue Mar 1 22:10:26 2022 |
David, George | Current status | Ring current 6.67e7 particles/s
pressure at S1: 2.3-2.8e-8
Merger, Tape server (WS3): 1574 kB/s, writing ok
Leakage current (WS4): 3.20 uA
DAQ (WS2): temperature checked, clock status: ok, adc calibration: ok, white rabbit check: failed
Online monitoring (WS 5): done |
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356
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Tue Mar 1 21:34:06 2022 |
PM, LV | check | no change:
Check Clock Status': Passed 5, Failed 0
Check ADC Calibration: Passed 5, Failed 0
'Check the White rabbit decoder status: Passed 0, Failed 5
target density at S1: 2.2-2.7e-8
temp: 110K
beam at injection: 7e7 |
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355
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Tue Mar 1 20:41:28 2022 |
PM, LV | check | no change:
Check Clock Status': Passed 5, Failed 0
Check ADC Calibration: Passed 5, Failed 0
'Check the White rabbit decoder status: Passed 0, Failed 5
target density at S1: 2.3-2.7e-8
temp: 110K
beam at injection: 7e7 |
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354
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Tue Mar 1 19:41:24 2022 |
PM, LV | target temperature walkthrough | A target temperature walkthrough has been initiated at 20:41 since the target density at S1 had slightly decreased (with ~0.1-0.2)
Current temprature 116K
set to 126K at 20:41
set to 95K at 20:47:30
set to 108.5K at 21:01:30, at this temperature was a sweetspot observerd for target density.
set to 109.7 at 21:08:30
set to 110K at 21:13:30 - we keep at this value for a while. the values at S1 are changing between 2.2-2.9e-8 |
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353
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Tue Mar 1 19:40:28 2022 |
PM, LV | check | no change:
Check Clock Status': Passed 5, Failed 0
Check ADC Calibration: Passed 5, Failed 0
'Check the White rabbit decoder status: Passed 0, Failed 5
target density at S1: 2.1-2.3e-8
temp: 116K
beam at injection: 7e7 |
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352
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Tue Mar 1 18:43:41 2022 |
PM, LV | check | no change:
Check Clock Status': Passed 5, Failed 0
Check ADC Calibration: Passed 5, Failed 0
'Check the White rabbit decoder status: Passed 0, Failed 5
target density at S1: 2.1-2.4e-8
temp: 116K |
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351
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Tue Mar 1 17:36:04 2022 |
PM, LV | check | no change:
Check Clock Status': Passed 5, Failed 0
Check ADC Calibration: Passed 5, Failed 0
'Check the White rabbit decoder status: Passed 0, Failed 5
target density at S1: 2.1-2.4e-8
temp: 116K |
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350
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Tue Mar 1 16:57:34 2022 |
CB, LV, PMH | New run | Beam issues due to too long storage time in the last hours. Motors moved out and not moving.
Decreased storage time to 70 s. Seems OK now. Restarted motor movement as before
Started new run R86 |
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349
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Tue Mar 1 14:01:01 2022 |
MS, SHB | check | 'Check Clock Status', 'Check ADC Calibration' and 'Check the White rabbit decoder status' : no change |
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348
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Tue Mar 1 12:58:32 2022 |
CB, MS, SS, ML | Synced pneumatic motion | New run R84
Attempting to sync pneumatic movement with ring. Still see something on t out -> p out
Command to move out was being given relative to the wrong time.
Fixed it. Still see one-two events every time we move out around 4-6 MeV. Attempted to greatly increase time before next injection - no difference. Microphonics from moving the detectors? It's just one-two counts on entire detector, acceptable.
New run R85
Now moving in/out
Potentiometer: 23.10 mm to 67.19 mm |
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347
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Tue Mar 1 12:33:21 2022 |
MS, SHB | check | 'Check Clock Status', 'Check ADC Calibration' and 'Check the White rabbit decoder status': no change |
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346
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Tue Mar 1 10:43:36 2022 |
MS, SHB | check | 'Check Clock Status', 'Check ADC Calibration' and 'Check the White rabbit decoder status': same
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345
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Tue Mar 1 10:35:59 2022 |
MS, SHB | next run on tape server tab | old potentiometer position 19.1 mm
new run number: 83
new potentiometer position : 27.58 mm
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344
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Tue Mar 1 08:02:26 2022 |
SHB, MS | check |
'Check Clock Status', 'Check ADC Calibration' and 'Check the White rabbit decoder status' - no changes |
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343
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Tue Mar 1 06:35:42 2022 |
SHB, MS | check | detector motors are still out
'Check Clock Status', 'Check ADC Calibration' : Clock status test result: Passed 5, Failed 0
'Check the White rabbit decoder status' :
Base Current Difference
aida01 fault 0xab60 : 0xab8f : 47
aida02 fault 0x88d3 : 0x8901 : 46
aida03 fault 0x23aa : 0x23d9 : 47
aida04 fault 0x15d7 : 0x1606 : 47
aida05 fault 0x2f03 : 0x2f0f : 12
White Rabbit error counter test result: Passed 0, Failed 5
Understand the status reports as follows:-
Status bit 3 : White Rabbit decoder detected an error in the received data
Status bit 2 : Firmware registered WR error, no reload of Timestamp
Status bit 0 : White Rabbit decoder reports uncertain of Timestamp information from WR |
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342
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Tue Mar 1 06:04:04 2022 |
SHB, MS | positions | just FYI: current positions saved in files are x=1000 and y=-750. this information is good in case of crash.
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341
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Tue Mar 1 05:23:02 2022 |
JM, EM | Current status | 06:20
Servo motors moved to fully out position as some work on the beam was neccessary. Beam injection had dropped from ~9e7 to around 1e7. Potentiometer reads 19.10 mm.
Still trying to improve target density. Current setpoint 100 K.
Merger OK
Data rate = 1600 kb/sec
Leakage current = 3.21 uA
System checks OK - wr fails
Base Current Difference
aida01 fault 0xab60 : 0xab8e : 46
aida02 fault 0x88d3 : 0x8900 : 45
aida03 fault 0x23aa : 0x23d8 : 46
aida04 fault 0x15d7 : 0x1605 : 46
aida05 fault 0x2f03 : 0x2f0f : 12
White Rabbit error counter test result: Passed 0, Failed 5
Understand the status reports as follows:-
Status bit 3 : White Rabbit decoder detected an error in the received data
Status bit 2 : Firmware registered WR error, no reload of Timestamp
Status bit 0 : White Rabbit decoder reports uncertain of Timestamp information from WR
Avg ring pressure = 4.3E-10 mbar.
06:40
Target density still very low. Setpoint back to 116 K. Detectors still fully out, very low rutherford rate.
Attempted to move nozzle to increase density, already on maximum point.
06:50
Setpoint to 95 k. Small increase in target density, however this was temporary
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