 Sat Feb 26 22:22:27 2022, David, Pierre-Michell, Starting to take data 11x
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At 23:22 we started recording data under the new conditions.
Merger, Tape server (WS3): 1408 kB/s writing ok
Leakage current (WS4): 3.27 uA
DAQ (WS2): temperature checked, clock status:ok, adc calibration:ok, white rabbit check:failed
Online monitoring (WS 5): done |
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Sat Feb 26 23:20:13 2022, David, Pierre-Michell, Update status 7x
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In this last hour we have been playing with the cryostat temperature as dictated by Nikos, in order to have the target working properly. For this, we have increased from 80K to 140K the cryostat temperature then we saw again target until we didn't. Then we went down again to 80K. After a few minutes, with a really nice target again was gone, so we increased the temperature to 120K at 00:19. At 00:27 decrease from 120K to 80K.
Ring current 8e7 particles/s
Merger, Tape server (WS3): 1580 kB/s writing ok
Leakage current (WS4): 3.27 uA
DAQ (WS2): temperature checked, clock status: ok, adc calibration: ok, white rabbit check: failed
Online monitoring (WS 5): done |
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Sun Feb 27 00:07:15 2022, David, Pierre-Michell, No beam, valve closed
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At 00:37 we lost the beam due to a high pressure burst in the tarjet which resulted in a valve closed at YR09VV...
On-call service technicians are coming to solve the problem.
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Sun Feb 27 00:53:24 2022, David, Pierre-Michell, Current status 7x
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We have recovered the beam at 01:49, after such a long time we had no target so we increased from 80K to 120K at 01:52. 02:01 update 120K-->95K as we have observed around that temperature always fluctuations and is safer.
Ring current 7.74e7 particles/s
Merger, Tape server (WS3): 1619 kB/s writing ok
Leakage current (WS4): 3.26 uA
DAQ (WS2): temperature checked, clock status: ok, adc calibration: ok, white rabbit check: failed
Online monitoring (WS 5): done
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Sun Feb 27 01:46:56 2022, David, Pierre-Michell, Current status
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So far looks like with a temperature of 95K the target is maintained with a reasonable density throughout long periods of time.
Ring current 6.41e7 particles/s
Merger, Tape server (WS3): 1472 kB/s writing fine
Leakage current (WS4): 3.26 uA
DAQ (WS2): temperature checked, clock status: ok, adc calibration: ok, white rabbit check: failed
Online monitoring (WS 5): everything fine |
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Sun Feb 27 02:38:52 2022, David, Pierre-Michell, Current status
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We have decreased the temperatur> 95K --> 90K. At 95K the target was stable, but let's try to increase the density a bit.
Edit 03:54 : 90K --> 85K
Merger, Tape server (WS3): 1300 kB/s writing ok
Leakage current (WS4): 3.27 uA
DAQ (WS2): temperature checked, clock status: ok, adc calibration: ok, white rabbit check: failed
Online monitoring (WS 5): done |
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Sun Feb 27 03:49:36 2022, David, Pierre-Michell, Current status
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04:06 85K -->120K : 04:13 120K -->95K
current ring 8e7 p/s
Merger, Tape server (WS3): 1600 kB/s, writing/refreshing ok
Leakage current (WS4): 3.26 uA
DAQ (WS2): temperature checked, clock status: ok, adc calibration: ok, white rabbit check: failed
Online monitoring (WS 5): done |
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Sun Feb 27 04:54:46 2022, David, Pierre-Michell, Current status
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Ring current 8e7 particles/s
Merger, Tape server (WS3): 1664 kB/s writing ok
Leakage current (WS4): 3.26 uA
DAQ (WS2): temperature checked, clock status: ok, adc calibration: ok, white rabbit check: failed
Online monitoring (WS 5): done |
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Sun Feb 27 05:45:53 2022, David, Pierre-Michell, Current status
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6:05: 95K-->120K
6:12: 120K --> 95K
Ring current 8e7 particles/s
Merger, Tape server (WS3): 1414 kB/s writing ok
Leakage current (WS4): 3.25 uA
DAQ (WS2): temperature checked, clock status: ok, adc calibration: ok, white rabbit check: failed
Online monitoring (WS 5): done |
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Tue Mar 1 22:10:26 2022, David, George, Current status
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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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Tue Mar 1 23:30:04 2022, David, George, Current status
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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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Tue Mar 1 23:43:15 2022, David, George, Beam Intensity Drop
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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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Wed Mar 2 01:24:48 2022, David, George, Ion Source Update
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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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Wed Mar 2 03:40:40 2022, David, George, Temperature Cycle
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04:40
Target density is hovering between 2.0e-8 and 2.3e-8, sometimes dipping below 2.0e-8
We will conduct a temperature walkthrough while there is no beam,
04:40: setpoint 125K
04:46 setpoint 95K
04:56 setpoint 108K
04:59 setpoint 110K
05:00 setpoint 112K (here improved from 110K)
05:03 setpoint 114K
05:08 setpoint 113K
05:11
113K seems good, fluctuating between 2.3e-8 and 3.1e-8
will leave temperature here |
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Tue Feb 22 17:32:38 2022, David, Current status 12x
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Michael is modifying the settings of the electron cooler --> changed beam from bunched to coasting
Merger, Tape server (WS3) checks: DONE, writing ~1036 kB/s, refreshing is fine
Leakage current (WS4): 3.46 uA , stable current
DAQ (WS2): temperature checked,
- clock status:
Clock status test result: Passed 5, Failed 0
Understand status as follows
Status bit 3 : firmware PLL that creates clocks from external clock not locked
Status bit 2 : always logic '1'
Status bit 1 : LMK3200(2) PLL and clock distribution chip not locked to external clock
Status bit 0 : LMK3200(1) PLL and clock distribution chip not locked to external clock
If all these bits are not set then the operation of the firmware is unreliable
- adc calibration:
Calibration test result: Passed 5, Failed 0
If any modules fail calibration , check the clock status and open the FADC Align and Control browser page to rerun calibration for that module
- white rabbit check:
Base Current Difference
aida01 fault 0xc228 : 0xc274 : 76
aida02 fault 0x5e98 : 0x5ee0 : 72
aida03 fault 0x92d3 : 0x931f : 76
aida04 fault 0x7a92 : 0x7ade : 76
aida05 fault 0xedc0 : 0xedcc : 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
DAQ (WS2): everything ok
Online monitoring (WS 5): done; |
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Tue Feb 22 19:11:18 2022, David, Current status
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Still trying to recover previous pressures, more details in the next entry.
Merger, Tape server (WS3) checks: DONE, writing ~1030 kB/s, refreshing is fine
Leakage current (WS4): 3.46 uA , stable current
DAQ (WS2): temperature checked,
DAQ (WS2): everything ok
Online monitoring (WS 5): done; |
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Tue Jun 4 00:04:39 2024, DR, EH, Run 31
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Beam energy = 3 MeV
Horizontal beam position = 4.0 mm, vertical beam position = 0.0 mm.
Beam intensity at inj ~ 2.5e7
Detectors are positioned IN. Left arm = 36.54, right arm = 64.60 mm
Cycle time ~ 6 minutes
01:05
Target density still very unstable
02:45
Target density has dropped to ~1e9 and has been at that level for 30 minutes. We will try to move the target a bit and see if we can get an increase. Target position is currently x=-12400, y=2900
Merger OK, Tape server OK
ADC data item statistics looks as before. OK
FEE temperatures look OK
System checks OK
04:15
We were able to recover some target, but it is still very unstable. The new position is x=-12800, y=2000
Merger OK, Tape server OK
ADC data item statistics looks as before. OK
FEE temperatures look OK
System checks OK
06:15
Target still unstable, fluctuating around the 5e10 region
Merger OK, Tape server OK
ADC data item statistics looks as before. OK
FEE temperatures look OK
System checks OK |
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Thu Jun 6 05:44:45 2024, DR YL DB LB CB JM, Run 38 - 15N Tests 8x
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06:45
All system checks OK
Target density 3.4e11
11:50
System checks OK.
No beam in the ring yet. Althoug some injection may be taking place at low intensities
Target density appears much more stable than before.
Density currently just above 1e11 at/cm2
Note maintanace is required to appc025 so anydesk is currently down.
13:13
Merger OK, Tape server OK
ADC data item statistics looks as before. OK
FEE temperatures look OK
System checks OK
Leakage current stable
Attachments 1-5 (also waveforms)
15:00
Merger OK, Tape server OK
ADC data item statistics DO NOT looks as before. NOT OK
FEE temperatures look OK
System checks OK
Leakage current stable
Attachments 6-8
15:16
Notice the statistics for aida01-aida04 (DDSD 0, top left) were counting extremely high in the previous check (attachment 6). Previous rate was 0-1 counts.
We tried ASIC check load three times but not effect on the rate.
We then tried 'shaking the detectors' by moving the left pneumatic in and out again.
Rates go back to normal levels (0-1 counts)
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Tue Jun 4 06:56:02 2024, DFF, PC, LB, JM,NP,AB, Run 31 contd
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8:13
Since 6:40 the target density dramatically dropped to 10^9 since then it has been unstable and did not recover. Currently it is around 8e8.
09:00
Target density has been increased to the high -10, very low -11 region. We will keep this run going unless the density is increased further.
10:21
Beam energy = 3 MeV.
Horizontal beam position = 4.0 mm, vertical beam position = 0.0 mm.
Target density ~ 1e9 at/cm2 (no target, get lost quite quckly)
Beam intensity at inj ~ 1.7e7
Detectors are positioned IN. Left arm = 36.54, right arm = 64.60 mm
Histograms and stats zero'd, monitoring code restarted.
Beam in the ring ~ 6 minutes.
Pressure in YR09 E target ~ 4.36e-11 mbar.
Merger OK, Tape server OK
ADC data item statistics looks as before. OK
FEE temperatures look OK
System checks OK
Leakage current stable
target density has been fluctuating between E9 to E12. We can very clearly see the increase in elastic counts on our detector during high density periods.
Attachment 1 - rate plots at 1E12 at/cm2
Attachment 2 - rate plots at 1E9 at/cm2
12:26
Merger OK, Tape server OK
ADC data item statistics looks as before. OK
FEE temperatures look OK
System checks OK
Leakage current stable
After reaching a density of > 10^12 a bit before 11:00, the valve got closed. When a valve is closed, can be observed a dramatic change in the plot and one of the three green ligths of atps7vaccrz1 (0,2,4) is turned off. Nikos opened it, and now it seems stable again around 1e11.
14:07
Merger OK, Tape server OK
ADC data item statistics looks as before. OK
FEE temperatures look OK
System checks OK
Leakage current stable
15:05
Run stopped as target density is rubbish. Might as well get beam background |
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Wed Feb 23 19:22:55 2022, CN, TD, check 10x
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- Motor checked , OK
SW3
- Merger OK
- Screenshot uploaded
- Data rate : 755 kbytes/s
SW4
- current plot uploaded
SW2
- T OK
- system wide check OK
- Statistics ok
- Spectra ok
SW5
4 plots uploaded
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