09:30

Beam optimisation. No beam since 09:25.

Target ON and open to the ring

YR09xxx ETarget ~1.9e-10 (saturated)

Target E4 inlet pressure ~8.8E-9 mbar

Dump S3 ~ 6.8E-10 mbar

Nozzle temperature 150 K

Run 54 started, monitoring code restarted.

FH and ML are optimising the beam.

08:30

Beam ON ~1.0E7 pps

Target ON and open to the ring

YR09xxx ETarget ~1.9e-10 (saturated)

Target E4 inlet pressure ~8.8E-9 mbar

Dump S3 ~ 6.8E-10 mbar

Nozzle temperature 150 K

Run 54 started, monitoring code restarted.

FH and ML are optimising the beam.

07:30

Beam ON ~8.0E6 pps

Target ON and open to the ring

YR09xxx ETarget ~1.9e-10 (saturated)

Target E4 inlet pressure ~8.8E-9 mbar

Dump S3 ~ 6.8E-10 mbar

Nozzle temperature 150 K

Run 54 started, monitoring code restarted.

08:00 The beam is electron cooled by FH and the orbit of the beam is slighty changed.

06:47

Beam ON ~2.0E6 pps, still fluctates between 1e6 and 6e6 (like a step function)

Target ON and open to the ring

YR09xxx ETarget ~1.8e-10 (saturated)

Target E4 inlet pressure 8.0E-9 mbar

Dump S3 ~ 6.6E-10 mbar

Nozzle temperature 150 K

Run 54 started, monitoring code restarted.

06:00

Beam ON ~1.5E6 pps, still fluctates between 1e6 and 6e6 (like a step function)

Target ON and open to the ring

YR09xxx ETarget ~1.8e-10

Target E4 inlet pressure 8.2E-9 mbar

Dump S3 ~ 6.5E-10 mbar

Nozzle temperature 150 K

Run 54 started, monitoring code restarted.

05:00

Beam ON ~2E6 pps, still fluctates between 2e6 and 6e6 (like a step function)

Target ON and open to the ring

YR09xxx ETarget ~1.8e-10

Target E4 inlet pressure 8.3E-9 mbar

Dump S3 ~ 6.8E-10 mbar

Nozzle temperature 150 K

Run 54 started, monitoring code restarted.

04:00

Beam ON ~5.5E6 pps, but it fluctates between 2e6 and 6e6 (like a step function) in about each 5-10min

Target ON and open to the ring

YR09xxx ETarget ~1.8e-10

Target E4 inlet pressure 8.4E-9 mbar

Dump S3 ~ 7.0E-10 mbar

Nozzle temperature 150 K

Run 54 started, monitoring code restarted.

03:00

Beam ON ~7E6 pps

Target ON and open to the ring

Target E4 inlet pressure 8.5E-9 mbar

Dump S3 ~ 7.3E-10 mbar

Nozzle temperature 150 K

Run 54 started, monitoring code restarted.

01:30

Beam ON ~6E6 pps

Target ON and open to the ring

Target E4 inlet pressure 8.12E-9 mbar

Dump S3 ~ 7E-10 mbar

Nozzle temperature 150 K

1:40

Run 54 started, monitoring code restarted.

signals from ICT and CRYRADIO are now connected to AIDA2 and AIDA5 respectively. ICT is set to factor 200 and CRYRADIO to 40 for now.

(AIDA3 --> electron cooler)

Currently 4 possibilities to have a look at the beam, all of them are OK to check whether there is beam or not, but some of them are better for checking absolute values.
- Schottky RF signal
- Schottky zero span signal
- CRYRING Radio (signal from BPM) --> YR12DA1R
- ICT (integrated current transformer) --> YR12DT1C

absolute measurements:

- currently the beam is at 5.5 MeV/u calibrated on the flat top. The signal of ICT before is noisy but on the flat top it is well calibrated.

relative measurements:

- The signal from CRYRING radio, has a good amplifier and is frequency independent with a nice log signal. it can be used for relative measurements

- The zero span signal of Schottky can be used, but it is not reliable for measuring the number of ions since change in the control room may change the signal level.

- Schottky RF signal can be viewed by running Launcher-App using the button "VNC Tektronix RSA". The only problem is that only one instance can run, so if in the control room someone needs it, in the container it will disappear.

21/2/22 16:00

Call from main control room, beam is ON, probably has been for several hours judging by rate on xy total plot.

Changes made to online monitoring code by OH, include setting to only 1 DSSD, correct offsets from the pulser walkthrough, offline analysis capabilities and X/Y position correction. 

Monitoring code restarted in CARME_SORT/build_no_output

17:31 Run 50 ended, run 51 started now beam is definitely in the ring. Tried to insert span zero schottky into aida2 correlation scalar, however rate was far too high.

18:03 Removed span zero schottky signal, started new run 52.

With beam ON we noticed some missing channels in the xy total plot. Aida 1 and 2 stat totals on spectrum browser show missing channels. Asic check on both to no effect. Fees power cycled.

19:57 Started run 53. Currently waiting for beam

21:20 Beam ON

1*L plots checked for aida 1, several channels showed no data (noise)

Slow comparator LEC threshold lowered to 0x32  to aida 1, checked 1*L plots and channels are now showing lots of noise. So those channels appear to be quiet using 0x64 threshold. (attachment 3)

Threshold increased back to 0x64

22:33

System checks OK -white rabbit fails on all. ~30 seperation

Temperatures OK

Statistics within range - new scalars added for aida02 and aida05

Data being written ~300 kb/sec

Leakage current ~3.6 uA

00:39

System checks checks OK -white rabbit fails on all. ~42 seperation

Temperatures OK

Statistics within range with new scalars

Data being written 256 kb/sec

Leakage current ~3.615 uA

XY counts dominated by hot channels - most blue pixels are ~10 counts

Beam OFF. Run started 20/2/22 18:42

System checck OK, except white rabbit all fail

Temperatures OK

Leakage current 3.59 uA.

potentiometer = 20.28 mm

11:36 OH noticed a channel in aida03 was running hot. Did an asic load check and rate returned to normal.

          Online monitor also restarted.

15:06 Investigating the high rate in aida03 ASIC01 channel 11.
          Looking at the waveforms it seems channel 11 is consistently different.
          Attachment 1 shows a typical waveform for it

Beam OFF. Run started 20/2/22 18:42

System checck OK, except white rabbit all fail

Temperatures OK

Leakage current 3.59 uA.

potentiometer = 20.28 mm

11:36 OH noticed a channel in aida03 was running hot. Did an asic load check and rate returned to normal.

          Online monitor also restarted.

Beam OFF. Run started 20/2/22 18:42

System checck OK, except white rabbit all fail

Temperatures OK

Leakage current 3.57 uA.

potentiometer = 20.28 mm

Beam OFF. Run started 20/2/22 18:42

System checck OK, except white rabbit all fail

Temperatures OK

Leakage current 3.57 uA.

potentiometer = 20.28 mm

Beam OFF. Run started 20/2/22 18:42

Fast comparator threshold HEC set to 0xff for all fees and asics to combat high energy noise bursts.

Electron cooler scalar plugged back into aida03 ~3000 per sec.

System checck OK, except white rabbit all fail

Temperatures OK

Leakage current 3.638 uA.

Statistics rates in noraml range, aida03 slightly higher as expected with scalar.

Run started 19/2/22 21:05. Beam ON

Temperatures OK

System wide checks OK - white rabbit fails on all.

Statistics are within normal range (10-20K goodevents)

Leakage current 3.6 uA

potentiometer = 20.28 mm

20/2/22

Leakage current ~3.675 uA. Looks stable now motors can not move (attachment 1)

potentiometer = 20.28 mm

Temperatures OK

System wide checks OK - white rabbit fails all

Statistic within normal range (see attachment 2 - ADC data items) Counter for aida 1 and aida 2 much higher due to noise bursts (elog 212)

XY total plot (attachment 3)

Low energy Ex histogram (attachment 4)

Low energy Ey histogram (attachment 5)

Tape Server data written (attachment 6)

Run end 20/2/22 15:08

Noticed bursts of high energy noise on aida01 and aida02 during run 47 and 48.

Good events rate jumps from 10-20k range to 250k. ADC data items rate jumps from 0-1 to 2k. Data rate being written increases to ~2500 kb/s from ~20 kb/s

Effect appears short lived ~30s at a time. On 18/2/22 the asic was check loaded which appeared to remove the increased rate but due to the time taken to asic check the burst had already finished.

Asic 2 on aida01 and asic 1 on aida02 are affected. See attached plots.

Fast comparator threshold HEC currently set to 0x2 for all

Zoomed in region of aida 1 asic 2 and the same region for asic 1 to see the difference are attached.