08:45

Run 39 started.

D+ beam deuterium target. D+ beam energy is 1.0 MeV/u. (beam calc calculation is 1.0151 MeV/u)

Beam calc - Attachment 1

Target density is about 5e12 at/cm2

All four detectors positioned fully out and stationary.

Left potentiometer = 18.86 mm

Right potentiometer = 19.8 mm

Ring cycle time is 1 minute. Note we see some hydrogen in in the spectrum, this disapears after a few seconds.

Target T1=30.1K, T2=31.9K.

Nozzle position x=-2.96, z=1.72 mm

YR09-Etarget pressure = 2.55e-10 mbar.

Cooler set value = 575 V, 15 mA. Read value = 575.8 V, 12.9 mA

All leakage currents look good

Beam position. Vertical =0.0mm , Horizontal=-1.25 mm

Beam intensity ~1e8. We appear to lose intensity when reducing energy. It is still sufficient to for our purposes.

09.38

CRYRING vacuum and ambient temperature - attachments 2-3

09:58

All checks OK.

Target density is ~7e12 at/cm2

Data rate ~300kB/sec

All leakage currents look OK

After 1 hour we have 3671, 2515 and 1064 in each peak respectively. This is also logged on the google docs form in same tab as elog.

10:36

Temps OK

Data rate OK 326 kB/sec

Leakage currents stable

12:30

Temps ok - attach

Rates ok - attach

Merger ok - attach

14:20

Run stopped for energy change.

11.40 DAQ continues
      File G22-205/R38

      ASIC settings
       slow comparator 0x32 all FEE64s

      DSSSD bias & leakage current OK - attachments 1-2

      FEE64 temps OK - attachment 3

      ADC data item stats OK - attachment 4

      WR timestamps OK - attachment 5

      per FEE64 Rate spectra - attachment 6

      Merger & Tape Server - attachments 7-8
       filesystem /mnt/data1 4.7Tb remaining

      Online analysis - per DSSSD energy spectra - elastic peak max count / channel c. 250-300Hz - attachment 9

      CRYRING vacuum & temperature - attachments 10-12
       YR09 e-target gauge indicates vacuum transients from high e-11 to low e-9mbar presumably due to high density D2 target

11.42 All histograms & stats zero'd


17.36 DSSSD bias & leakage current OK - attachments 13-14

      FEE64 temps OK - attachment 15

      ADC data item stats OK - attachment 16

      per FEE64 Rate spectra - attachment 17

      per FEE64 1.8.L spectra - attachments 18-19
       aida11 p+n pulser peak width 63 ch FWHM 
       aida03 n+n pulser peak width 85 ch FWHM

      Merger - attachment 20

      Online analysis spectra - elastic peak max count / channel c. few Hz - attachment 21
       rates much lower than earlier - no beam and/or no target - alert JM

10:56

Run 38 started.

D+ beam deuterium target. D+ beam energy is 1.5 MeV/u. (beam calc calculation is 1.5160 MeV/u)

Beam calc - Attachment 1

Target density is about 8.5e12 at/cm2 after moving nozzle this morning.

All four detectors positioned fully out and stationary.

Left potentiometer = 18.86 mm

Right potentiometer = 19.8 mm

Ring cycle time is 1 minute. Note we see some hydrogen in in the spectrum, this disapears after a few seconds.

Target T1=30K, T2=31.9K.

Nozzle position x=-2.89, z=1.72 mm

YR09-Etarget pressure = 2.37e-10 mbar.

Cooler set value = 846V, 15 mA. Read value = 847.378V, 13.105mA

Detector 4 looks OK at the moment.

Beam position. Vertical =0.0mm , Horizontal=2.5mm

11:05

All checks OK

Data rate is ~300 kB/sec.

Leakage currents - attachments 2,3

17:56

Rates have dropped significantly. Do not see elastics peak. No beam?

18:23

Check in with HKR. The thunder and lightning storm appears to have knocked out the beam from 17:30 until 18:10.

Beam is now back with an intensity of 2e8 pps.

I have also adjusted the nozzle of the gas target slightly and recovered target pressure of 1e13 from 3e11 at/cm2. This has been stable for the last 15 minutes. I think during shifts we will require some nozzle modifications. It is not vital at higher energies but for energies during the week, we will need.

We again see the very nice elastic scattering pattern on our detector. I am concerned we may be some shadowing on our detector giving rise to the observed circle? Attachment 5

20:30

Checks all OK

Target density in last 30 mins ~1e13 at/cm2

DSSD4 still looking good and  stable

23:00

All checks OK.

Detectors all stable

Target density still in 1e13 range.

We have accumulated lots of stats! This run should provide an excellent run for energy calibration using elastics and reaction peaks.

We run overnight and change energy in the morning

01:00

All checks OK

Detectors stable

Target density stable 1e13.

05:00

All good still

07:05

Run stopped to change energy. Gas target off.

final statistics plot attached.

Leakage currents overnight also. DSSD4 had two transients during the night but recovered.

22:49

Run 37 started.

D+ beam deuterium target. D+ beam energy is 2 MeV/u. (beam calc calculation is 1.9211 MeV/u)

Target density is about 1.3e12 at/cm2. FLuctuations between 1e12 and 1e13 at/cm2.

All four detectors positioned fully out and stationary.

Left potentiometer = 18.86 mm

Right potentiometer = 19.8 mm

Ring cycle time is 1 minute. Note we see some hydrogen in in the spectrum, this disapears after a few seconds.

Target T1=30K, T2=31.9K.

Nozzle position x=-3.11, z=1.77 mm

YR09-Etarget pressure = 1.04e-10 mbar.

Cooler set value = 1126V, 15 mA. Read value = 1068V, 13.22 mA

Detector 4 is still a bit unstable in its leakage current but the data coming through looks good. Some crap is periodically written to disk when leakage current spikes. Attachment 1,2 for leakage currents.

23:30

Checks OK - high but managable rates from DSSD4

01:00

Checks OK - DSSD4 has settled down. Leakage current attachment 1

Ex energy histograms - attachment 2

X2go check on gas target shows density has dropped to 5e11 at/cm2 in last half an hour. 

03:56

Checks OK

DSSD had more issues but once more settled

Temps OK

Rates OK

DAQ continuing

06:00

Checks OK

08:00

We can now change to 1.5 MeV/u no storage mode enabled. 

21:47

Run 36 started.

D+ beam deuterium target. D+ beam energy is 2 MeV/u.

Target density is about 1.6e12 at/cm2. FLuctuations between 1e12 and 1e13 at/cm2.

Detectors are now IN with the servo motors only. Detectors are stationary.

Left potentiometer = 36.54 mm

Right potentiometer = 37.96 mm

Ring cycle time is 1 minute. Note we see some hydrogen in in the spectrum, this disapears after a few seconds.

Target T1=30K, T2=31.9K.

Nozzle position x=-3.12, z=1.72 mm

YR09-Etarget pressure = 2.29e-10 mbar.

Cooler set value = 1126V, 15 mA. Read value = 1068V, 13.22 mA

Detector 4 is still a bit unstable in its leakage current but the data coming through looks good. Some crap is periodically written to disk when leakage current spikes.

We will run like this for an hour then move detectors back out for overnight run.

after 1 hour of beamtime we stop.

Attachment 1 - xy plot

Attachment 2 - energy histogram NUCLEAR

21:00

Run 35 started.

D+ beam deuterium target. D+ beam energy is 2 MeV/u. (beam calc calculation is 1.9211 MeV/u)

Target density is about 4e12 at/cm2. FLuctuations between 1e12 and 1e13 at/cm2.

All four detectors positioned fully out and stationary.

Left potentiometer = 18.86 mm

Right potentiometer = 19.8 mm

Ring cycle time is 1 minute. Note we see some hydrogen in in the spectrum, this disapears after a few seconds.

Target T1=30K, T2=31.9K.

Nozzle position x=-3.06, z=1.72 mm

YR09-Etarget pressure = 2.29e-10 mbar.

Cooler set value = 1126V, 15 mA. Read value = 1068V, 13.22 mA

Detector 4 is still a bit unstable in its leakage current but the data coming through looks good. Some crap is periodically written to disk when leakage current spikes. Attachment 1,2 for leakage currents.

Attachment 3,4 data rate to disk and statistics tab for when detector 4 is behaving. When not data rate can spike to 4000 kb/sec. Looks OK at the moment.

Attachment 5 - xy plot. We observe a circular shape on the detector. We are unsure of what this is at the moment. Offline analysis required.

Attachment 6 - energy histogram including Rutherford.

Attachment 7 - energy histogram just nuclear peaks.

Attachment 8 - beam calc with read values. 

08:27

No run going.

Temperatures OK - attach

Attempting to bias channel 3 again. Slowly ramping up.

V = 60, I = 5.3

V = 70, I = 6.1

V = 80, I = 9.0 --> 6.2 (unstable). Decreasing bias.

V = 70, I = 6.0 (stable again)

Leaving at 70 V for a while to condition (?)

Resetting the gnuplot graph. Old caen_current.dat moved to G22-205-caen_current.dat and copied in /TapeServer/G22-205

10:10

Temperatures OK

Leakage current on channel 3 showed some issues, back to stable. See attached.

11:00

Temps OK

Leakage current stable.

Increased bias on channel 3 to 80 V. I = 6.2 uA stable. Leaving for a while.

12:45

Temps OK

Leakage current stable

Increased bias on channel 3 to 90 V. I = 6.3 stable. Leaving for a while.

13:30

Temps OK

Leakage current stable.

Increased bias on channel 3 to 100V. I = 6.3 stable. Hopefully it holds until the end of the beam time.

20:00

Leakage current on channel 3 had issues again and bias was reduced to 50 V. Remained stable. Turned to 60 V now. Still stable. See attachement.

FEEs on detector for -> MEC

Temps OK - attach

Checks as before - attach

Rates OK (four fees not counting as expected) - attach

Deuterium beam in the ring at 2 MeV/A approx 2E8 pps, significant H2+ contamination.

Deuterium target working, fluctuating around 5E12-1E13 atoms/cm2

Vacuum in YR09 - 3E-10 mbar

Beginning beam-target overlap measurements soon.

Oven temperature increased, current up to 3.5E7 pps.

Found beam-target overlap setting horizontal bump in RO9 to -2.5mm.

Target T1 30.5K, density increasing to 2.6E11 at/cm2.

19:08 Run 32 start

Moving left detectors (79.69->34.66mm).

Beam energy 1.85 MeV/u nominal

Electron cooler actual values: voltage 1.051 kV,  current 0.013215 uA, [voltage divider G35 1.0504 kV]

Stopped run, beam was still in bunch mode.

19:15 Run 33 start

All checks Ok.

Target at 3E11 at/cm2

Attachment 1-2 with rates and temperatures

20:20

Target density 3.4E11 at/cm2. Beam around 2.2-3.6E7 pps.

Checks ok! Spectra attached in att.3.

21:25

all good. Target density 4E11 at/cm^2

22:24

All checks are OK

Noted some variability in the injection intensity. For 15 minutes about half of shots were below 1e7. Perhaps some variability due to end of lithium in oven or increased temperture. 

Beam calc with read values - Attachment 4

01:30

All checks OK. Injection intensity has stabilised ~2E7

Target density is stable ~4e11 at/cm2

02:44

Suddenly see very high rates in DSSD4. Detector had tripped. Tried to re-bias but kept tripping.

Set to 70V, leakage current is about 17uA but fluctuates quite wildly. Set to 50V and leakage current is about 6uA but again has wild fluctuations. Not sure of the cause, this detector is not moving and is far from the beam.

Decided to turn detector off to try and protect it. We can  re-bias and monitor in the day tomorrow when we do not have beam on target.

This detector has tripped previously but was able to be re-biased at the time. See attachments 5 and 6 for the detector leakage currents.

New Run started R34.

Same conditions as before. DSSD4 turned off. To stop crap writing to disk I have set the corresponding FEEs to the MEC.

In principle we do not need this detector now as it is not moving to see the reaction.

Note I also observed in the system messages we semi regularly get a DHCP request from aida11. It seems to be functioning fine as I see the pulser signal in the spectrum browser. May be worth following up on at a later date. See attachment 7

All other checks OK

Data rate is now ~140 kB/sec

03:15

Tried to bias DSSD4 again. Leakage currents appear fine again.

Left for 5 minutes to gauge stability -> seems fine.

03:22

Have returned aida13, 14, 15, 16 back to LEC.  Maintaing the same run (34)

Scratch that. 03:27 detector tripped again. Will just leave it off tonight. Turned those FEEs back to MEC.

06:00

I have quickly looked at Run 33. We clearly see the 7Be again in both detectors. Locus on detector much smaller than at higher energies. 

All checks OK

07:07

Run stopped, switching to deuterium.

Detectors moved out

Shutter for gas target off.

Moved to next run -> no storage mode.

15:40

Waiting for Serge to come in to change beam energy.

Remaining at the same beam energy and settings as before, except RIGHT arm now moving.

Run 31

37.96 -> 83.69 mm

16:53

Serge arrived. Run ended. Motors out. No storage.

Temps OK

Rates OK

We start a new run with real data taking condititon: beam is ok, target density is 1e12 cm-2, detectors are moving in-out periodically.

Cooler voltage setpoint 1066.6 V. Read value 1068 V.

Current read = 0.01325 uA

Beam energy = 1.88 MeV/u (from HKR)

Attachment 1 - beamcalc with nominal values

Attachment 32 - beamcalc with actual values

Right arm at 19.80 mm

Left  arm IN at 77.56 mm (OUT 32.77 mm)

vertical beam position 0.0 mm

horizontal beam position  -3.0mm

Beam intensity ~1.8e+7 particles.

Target density ~1e12 at/cm2

Target temperatures: T1=31.4 K T2=35.1 K

17:48

aida01 fault      0x0 :      0x1 :      1  
FPGA Timestamp error counter test result: Passed 15, Failed 1

All checks OK.

The electron current from beamcalc is the setvalue.

18:51

aida01 fault      0x0 :      0x1 :      1  
FPGA Timestamp error counter test result: Passed 15, Failed 1

All checks OK.

20:20

aida01 fault      0x0 :      0x1 :      1  
FPGA Timestamp error counter test result: Passed 15, Failed 1

All checks OK.

22:02

         Base         Current         Difference
aida01 fault      0x0 :      0x1 :      1  
FPGA Timestamp error counter test result: Passed 15, Failed 1

All checks OK.

23:13

All checks OK. Target stabilized at ~6.7E11 at/cm^2

00:23

All checks good.

01:01

We are observing what seems to be a steady decrease of the target density, currently at around 5e11 at/cm2, whihc also seems to be following a decrease in the temperature T2.

1;40

All checks good. Spectra attached in att. 18. Target density still decreasing (3.7E11 at/vcm2)2

2:54

All checks ok. Attached rates and spectra in att. 19-20. target density decreased as continued, now around 2.5E11 at/cm^2.

We tried to move a bit around the nozzle/target, no effect.

Gone back to original value of x=1000, y=-4200.

Moreover, the screen with the program to move the detector seems to be bugged (gray background, a double window): however, the potentiometer value is chnaging and I see the usual effect of detector moving on the statistics, so i think it is fine

3:38

Checks Ok. Target 2.5E11 at/cm2

4:05

The bug disappeared

4:56

Target density is now 1.9E11 at/cm2. It is very low with respect to before, but our reasoning is that nothing can be done about it at night anyway (apart from moving the nozzle, which we tried without effect). O. pointed out that the beam lifetime is still such that the beam is gone before the next injection.

Checks ok. Attachments 21-22 spectra and xy plot. Some structure in top left?

06:00

All check ok. Target density 1.8E11 at/cm2

6:49

all goo, target 1.7E11 at/cm2

07:30

All checks ok, except timestamp (15 passed, 1 failed, see screenshot)

8:30

Tried moving the nozzle. Minor improvement in target density only. x=-1000 y=-4200

Stopped writing to disk while moving nozzle and stopped the motors. Restarted everything and moved to run 29 - no differences vs. 28.

09:11

Temps OK.

Nautilus does not respond to user commands. Attempint to make it work again without rebooting.

10:05

Stopped to reconsider which arm we are moving. Started to move arms around. Decided to stick with left arm.

Started run 30. Same as 28 and 29.

10:30

Temps OK - attach

Rates OK - attach

Stats OK (taken with arm in) - attach

Current histogram attached

11:40

Something happened to leakage currents. We see an increase in the top-right detector (which recovered) and a decrease in the bottom-right. Neither is moving.

No changes to left arm detectors, which are moving.

Temperature in the cave stable. No effects on the DAQ.

Temps OK

Rates in aida06 at 10k. Fast discriminator at 100k. Checkloaded. OK. Other rates fine.

Will keep monitoring.

11:50

aida06 fast discriminator over 100k. Checkloaded x2. OK now. Other rates fine.

No changes to leakage current.

13:20

Temps OK

Rates OK (aida 06 is no longer counting fast)

Leakage current stable

14:20

Run continues OK

Temps OK

Stats OK

Run 27 running

28/05/2025

(ignore 26 - in-between run)

We start a new run with real data taking condititon: beam is ok, target density is 9.6e11 cm-2, detectors are moving in-out periodically.

Cooler voltage setpoint 1128 V.

Beam energy = 1.99 MeV/u (from HKR) (same as run 25)

Left arm at 18.86 mm

Right  arm IN at 83.69 mm (OUT 37.96 mm)

vertical beam position 0.0 mm

horizontal beam position  -3.5mm

Beam intensity ~1e+7 particles.

Target density ~9.6e11 at/cm2

Target temperatures: T1=31.5 K T2=35.2 K

Beam cycle set to 10 seconds.

11;57

All checks OK.

Aida10's rates seems low now, but aida07 is instead jumping between 200 and 4000 following beam.

15:45

Root histograms refreshed.

Temps OK - attach

Stats OK - attach

All checks OK

Leakage OK - attach

             Base         Current         Difference
aida01 fault      0x0 :      0x1 :      1  
FPGA Timestamp error counter test result: Passed 15, Failed 1
If any of these counts are reported as in error
The ASIC readout system has detected a timeslip.
That is the timestamp read from the time FIFO is not younger than the last

23:20

JM thinks we cannot see 7Be locus on run 24. Possibly the right arm cannot get close enough.

Stopped moving right arm

Started moving left arm as previously: 32.52 mm -> 77.56 mm

Checked with bunched beam: not clipping. Possibly we could go further in - to be decided.

Started run 25

Target - 1.1E12 atoms/cm2

Beam - 1.2E7 pps

Root histograms refreshed.

Temps OK - attach

Stats OK - attach

All checks OK

Leakage OK - attach

Spectrum browser 1, 7, 8 attached

00:00

Run continues OK

Temps OK, Stats OK, Merger OK

01:15

Run continues OK

Temps OK - attached

Stats OK - attached

Merger OK

Rates OK - attached

Also attached current histograms

03:10

Motors now moving 32.77 -> 77.56 mm. Unclear why, should not affect results.

Target 1.1E12 atoms/cm2

Current 1.4E7 pps

Temps OK - attached

Rates OK - attached

All checks OK

Merger OK

03:37

7Be locus appears to be clearly visible. Attach 18

04:32

Temps OK

Rates OK

Merger OK

05:30

Temps OK

Rates - aida10 showes intermittently high rates around 10k. See attached. Seems to be linked to beam, already observed last night.

06:10

Temps OK

Rates OK - aida10 still counting 10k with beam, 300 without

Merger OK

Histograms attached

7:23- LB,PW

All checks OK, general behaviour consistent with previous observations. Beam current ~ 1E7 pps

8:40

All good, attachment 27 is the spectra. Beam current 1.3E7 pps.

9;50

All good, target very stable at 1E12 at/cm^2. Noticed also Aida01 and aida02 show same behaviour as aida10, but the maximum rate is between 1000-2000 (instead of the 10000-20000 of aida10)

Run 25 stopped 10:45, Run 26 started -> laser spectroscopy laser test

Run 24 running

27/05/2025

We start a new run with real data taking condititon: beam is ok, target density is 5e11 cm-2, detectors are moving in-out periodically.

Cooler voltage setpoint 1128.55 V.

Beam energy = 1.99 MeV/u (from HKR)

Attachment 1 - beamcalc with set values

Attachment 7 - beamcalc with actual values

Left arm at 18.86 mm

Right  arm IN at 83.69 mm (OUT 37.56 mm)

vertical beam position 0.0 mm

horizontal beam position  -3.5mm

Beam intensity ~2e+7 particles.

Target density ~5e11 at/cm2

Target temperatures: T1=31.5 K T2=35.1 K

Beam cycle set to 10 seconds.

17:32 all checks OK

17:35 target density jumped to at 9e11

19:30 all checks OK (spectra attached)

19:45 target density drops to 3.5E11

20:20 target density jumps to 7e11

21:30 all checks OK

22:50 all checks OK

Screenshots and ParamModi settings export attached.

1) Select 'No Storage' [workspace 4, display 1, browser tab 'TapeServer']
    If already in 'No Storage' mode please ignore this step

2) STOP DAQ [workspace 3, display 1, browser tab 'Run Control']
   all FEE64s should change status from 'going' to 'stopped' *except* whichever FEE64(s) have a problem - typically their status is 'going' or 'error'

3) Restart Merger by selecting the Merger icon [workspace 4, display 2]
    terminal window showing the startup will popup

4) Setup Merger by selecting 'SETUP' [workspace 4, display 1, browser tab 'NewMerger Control']

5) Start Merger by selecting 'GO' [workspace 4, display 1, browser tab 'NewMerger Control']
     all data links will be inactive (red)

6) Start DAQ by selecting 'GO' [workspace 3, display 1, browser tab 'Run Control']
     check that DAQ is *actually* going - if not repeat 'GO'

7) Check data is being transferred to Merger and TapeServer

    Select 'Reload' [workspace 4, display 1, browser tab 'NewMerger Control']
     you should see a non-zero 'current merged data rate' and all links should show as green at least some of the time (requires observation over several reloads)

    Select 'Reload' [workspace 4, display 1, browser tab 'TapeServer']
     you should see 'Blocks written' and 'kb written' counters increase

8) Unselect 'No Storage' [workspace 3, display 1, browser tab 'TapeServer']
    If already in 'No Storage' mode at the start of this procedure please ignore this step


   If you continue to have problems, please request expert assistance.

27/05/2025 ca. 6:00

We start a new run: beam is ok, target density ok, detectors are moving in-out periodically.

Cooler voltage setpoint  1105.7 V

Attachment 8 - beamcalc with actual values

Next entry - beamcalc with set values

Right arm at 19.80 mm

Left arm IN at 77.56 mm (OUT 32.53 mm)

vertical beam position 0.0 mm

horizontal beam position  -3.5mm

Beam intensity 1.7e+7 particles.

Target density ~6e11 at/cm2

Target temperatures: T1=31.5 K T2=35.2 K

Beam cycle set to 10 seconds.

All check are Ok!

6:30

Noticed a small spike in all leakage currents, see attachment 1

6:50

all checks ok!

07:40

All checks are Ok!

Aida 10 shows sometimes higher statistics.

09:02

All checks are Ok!

Aida 10 shows sometimes higher statistics.

10:00

Checks OK.

Compression works OK.

Moved to run 23. Now moving RIGHT hand side detectors instead of LEFT hand side.

Motion 37.96 mm -> 83.69 mm

Left arm stationary at 18.86 mm

Planning to change energy around lunch.

11:35

Parameters are OK! Tragte density dropped down a bit: ~6e11 at/cm2

12:35

Parameters are OK! Tragte density dropped down a bit: ~1e12 at/cm2

13:10

Starting beam energy change. Detectors OUT.

06:00

FEE modules power cycled.

No issues on power cycle restart.

All system check OK - clock status, ADC calibration etc.

ASIC settings loaded are the same as previous startup. Slow comparator thresholds 0x32 (500 keV) and all FEEs set to LEC.

Statistics (ADC data) - attachment 1. Note aida10 fluctuations between 10,000 and 300 which appears to be a physics effect (beam on target)

Spectrum browser - layout 1 - attachment 2

Merger - attachment 3

Tape server - attachment 4 Data rate is about 300 kB/sec.

FEE temperatures OK

Waveforms - attachments 4,5

All Lekagae currents appear normal

Online monitoring scropt started. Beam on target. Run 22 started. See nect elog for details.

Run 21 running

26/05/2025 19:42 p.m.

We start a new run with real data taking condititon: beam is ok, target density is 1.1e12 cm-2, detectors are moving in-out periodically.

Cooler voltage setpoint 1105.7 V.

Beam energy = 1.95 MeV/u

Right arm at 19.80 mm

Left arm IN at 77.56 mm (OUT 32.53 mm)

vertical beam position 0.0 mm

horizontal beam position  -3.5mm

Beam intensity 2.2e+7 particles.

Target density ~1.1e12 at/cm2

Target temperatures: T1=31.5 K T2=35.2 K

Beam cycle set to 10 seconds.

All check are Ok!

21:44

All check are Ok!

23:10

Data rate to disk ~300 kB/sec

All checks OK

ADC disk Items #6 and ADC data items screenshots - attachments 5 and 6

Target density has dropped slightly to 7e11 at/cm2. This is fine with lithium due to beam lifetime constraints.

00:43

All checks OK

01:52

All checks are OK,

Attached spectra (attachment 7 and 8).

target pressure seems to be back at ca. 1E12 at/cm2

3:27

All checks good.

target pressure went down to 5E11 at/cm2 for a while, then back up to ca. 9E11 at/cm2.

4:49

All checks good

Rates higher on aida10 and aida4 (see attachment 9), monitoring. It is not consistently high but for example aida10 goes 222->20000->300->11000. It seems to follow the detector movement (higher rates when detector are IN)

Data rate to disk ~370kB/s.

Spectra attached in 10-11.

5:11

Still flickering. Attachment 12 with rates.

Data rate to disk around ~400 kB/s

05:30

DAQ has crashed. All statistics on aida read zero. No data through the merger or tape server.

Stopped tape server and then Run control STOP. Most FEEs did not respond to the command and continued to read going and some undefined. Reset aida servers and reloaded webpages. Same status. Have to power cycle.

Run 20 running

We start a new run since the laser guys will do some measurements.

Zoran will increase the beam intensity

Detectors are out position

All checks are OK!

13:30

All checks are ok!

Summary: Target not running. Background runs written to disk, some with beam some without.

19:27 Data file R17  running

      DSSSD positions out. Nikos will work on the target.
      Started a new run just after changing the DSSSD position
      No storage enabled
      All the checks are ok!

At 20:30 after 2h there was possible to open the cave again and Nikos started to cool down the target. However, is not clear if they can close the ring again...

22:12  The beam is back again. Cave closed and we are cooling downg the target!

Data file R18 started now.

DSSSD positions out. 

No storage disabled.

All checks ok. See attached files Work on the target.

Sunday 25 May 2025

09:45 Data file R18 running

DSSSD positions out. 

All checks ok!

12:05 Data file R18 running

DSSSD positions out. 

All checks ok!

13:55 Data file R18 running

DSSSD positions out. 

All checks ok!

15:50 Data file R19 running

DSSSD positions out. 

Beam is off.

All checks ok!

21:50

All checks OK.

Monday 26.05.25 09:15

All checks OK.