01:00

Cooler voltage setpoint 247.6 V.

FC20 read value 247.05 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm

vertical beam position  -5mm

Beam intensity 7.0e+7 particles.

Target density ~5e11 at/cm2

Target temperature is 38.6 K. Values of E1 is 820 Hz, 2.7A, 1.7e-1 mbar

All checks OK

02:50

Noise increase on dssd top left. Moved servo  motor to resolve issue.

23:38

Cooler voltage setpoint 247.5 V.

FC20 read value 246.95 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm

vertical beam position  -5mm

Beam intensity 7.0e+7 particles.

Target density ~5e11 at/cm2

Target temperature is 38.6 K. Values of E1 is 820 Hz, 2.7A, 1.7e-1 mbar

All checks OK

11:45 New run started - run 81, same settings as previous runs (75, 76 etc)

ROOT histograms NOT zeroed

Beam at 2.5e8, target density at 3e12

11:50 All checks okay

12:45 All checks okay

13:45 All checks okay

14:45 All checks okay

15:45 All checks okay.

17:00 All Checks okay. Target temp manually dropped from 30.4K to 30.1K to try and improve density as would not get much above 2.5-3ish. Also played with target position for a while - now seemed to have stabilised it at 4.5e12 as of now.

18:00 All checkd okay. Target been stable at 4.5-5.3e12.

18:20 Done checks again (all ok) as the beam is being a little stange. Attatched ss of peaky peaks (some of them very nice) but detector 3 histogram wont cooperate and wont let me see the counts if I zoom further down, but can see proton peak fine. Seeing periodic spikes in the counts plot for the particle detector - monitoring. Also the tail of the beam seems more red than usual.

19:00 More photos of strange spikes in the counts for particle detector uploaded. Sometimes, the baseline has decent sized spikes too. Attatchments 10-14

19:20 Checks ok. Traget stable. Spikes in particle detector seem to be more frequent, uploading more photos below. Also attatched peaks at this stage (attatchemtn 15).

19:36 Very strange spikes in particle det. Two bigish peaks at baseline and then strange beginning at the injection. Attatchment 19.

19:45 Another spike in the baseline for particle det. Attatchment 20. 

20:25 Checks ok. Spikes still in particle det plot.

21:20 Checks ok. Screenshot of peaks in attatchment 21.

22:20 Checks ok. Target been relativly stable all shift at 5e12. Spikes still periodically turning up in particle detector. Histograms are gaining counts, attatchment 22 is the peaks.

22:30 Target suddenly got really dense up to 1e13. Lifetime of the beam is ok. Trending down slowly. Did checks again and all is good.

01:45. Checks OK. Target seems thick.

04:30

Temperatures OK - attach

Rates OK - attach

Merger OK - attach

Hisograms look OK - attached

Target looks very thick from ring vacuum worsening.

7:15 all checks okay - historgams attached

beam 2e8, target 1e13, scintillator rate 2000 in peak

10:00 

Run stopped to gain cave access.

Before beam was stopped, target was moved out. We still see some signal on the neutral particle detector, roughly a factor 10 below with target on at 1e13 at/cm2

Will need a beam background run for normalisation procedure. See attachment 29

10:30

Now we have no beam in the ring we still observe some events in the neutrals detector. Some spikes up to 150 counts observed, could explain some of what we have seen so far. See attachment 30

Note we are saving all this data to MBS so it is effectively background for the neutral detector. 

20:00

Ecooler setpoint 246.8

Readout 246.25

Collector current 4.3

Target density ~5.3E11

Beam intensity 7E7 ions

08:00 New run started - run 80

Run whilst they are optimising the beam after losing it, everything else same as previous runs

ROOT histograms NOT zeroed

All checks fine

09:05 All checks okay

Attachment 5 current histograms zoomed into area of interest, detector 3 only proton peak visible

10:00 All checks okay

11:00 All checks okay

11:45 Run stopped as beam is back

09:34 - Moved to Run 9 in preparation of moving detectors. No target yet. Beam in the ring at 750 keV/A.

Temperatures OK (attach)

System wide checks OK except 16 fails clock and ADC calib

Rates OK (attach)

Writing to disk OK (attach)

Resetting the sorting script. Moving detectors.

Moved detectors in. See attached. Stripe / shadow quite clear. Some oddities on the top-right DSSD. May be due to ExEy cuts and multiplicity cuts.

Moved on tun run 9 to acquire some stats without motion.

10:13 Temperatures still OK. Rates OK. Leakage currents stable.

We were cutting the beam.

Increased repetition to x5.

Motors fully out - run 10 started.

14:51

Ecooler setpoint 246.9

Readout 246.35

Collector current 4.3

Target density 4.6E11

Beam intensity 8E7 ions

Shook left arm to fix it.

15:32

Right half on BL detector was not counting. Checkloaded. Fixed.

17:20

Moved left arm out/in to fix it.

Reduced temperature to 38.5 K in steps as the target density was declining.

E1: pressure: 1.57E-1 mbar, turbo frequency: 819  Hz

Target density: 1.5E11 atoms/cm2; Ion beam intensity: 6E7 particles (went down slightly, have not been able to get everything back)

DSSSD bias & leakage current OK 
FEE64 temperatures OK 
ADC data item stats OK 
per FEE64 Rate spectra OK 

19:50

E1: pressure: 1.61E-1 mbar, turbo frequency: 819  Hz

Target density: 1.5E11 atoms/cm2; Ion beam intensity: 7E7 particles (recovered slightly)

DSSSD bias & leakage current OK 
FEE64 temperatures OK 
ADC data item stats OK 
per FEE64 Rate spectra OK 

Target clogged?

New run started - Run 77 after refilling LN2 dewar

Same settings as Run 75 & 76

The root histos have not been reset, i.e. they show combined statistics of run 75, 76 and 77.

20:45 - all checks OK

22:00 - all checks OK

00:10

Observed no data writing to disk. Checked merger no data merging. No ADC data items. Seems daq crashed again.

Appears aida09 had crashed causing system to stop. Tried fix suggested in earlier elog by Tom. No success. All FEEs show error and system became unresponsive. 

Power cycling FEEs. 

00:30

New run started Run 78. Same conditions as previous runs. 

All thresholds remain unchanged ->0x28 (400 keV)

Had to reset monitoring histograms as they were unresponsive too. 

All system checks OK. 

Data rate is ~300 kB/sec

ADC data items rate is similar to previous run (screenshot already attached)

Detector leakage currents look OK. Plots attached. 

WS6 (elog and internet) appeared to freeze before. This could be similar to the issue osserved last weekend. All seems fine now and DAQ continues. Should keep an eye on it.

02:00

Checls OK

05:00

Checks OK

7:10 Checks OK. Target was fluctuating over night, dropped around midnight then back up but had no target for about 2-3 hours overnight. Fixed target thickness this morning and now have 5e12.

8:15 Checks Ok.

9:15 Checks Ok.

10:15 Checks ok. Target good at 5e12. Attatched screenshots of the peaky peaks so far (can't put numbers on excel as lost the ability to see it - see 9 10 and 11)

11:35 All checks ok. Screenshot of peaks attatchment 12 (decently peaky).

12:30 All checks ok. Peaks are beginning to show, especially proton and triton but on det 3, cant distinguish trition from noise peak so no value in spreadhseet for that. Target stable at 4.8e12.

13:30 All Checks ok.

14:30 All Checks ok.

15:40 All checks okay, lost beam at 15:25, let HKR know and they are looking into it, have put to no storage.

16:35 All checks okay, still no beam, taget is steady at 3e12

17:35 All checks okay, beam is back but being optimised

18:33 New run started- run 79, same settings as previous runs, did NOT reset histograms, beam now 2e8 (previously was 7e8)

18:33 All checks okay apart from temp of aida 3 which is a little high (see attachment 13), rates also attached (attachemnt 14), current histogram attached (15)

19:35 All checks okay, aida 3 temp now back within range, target density dropped but have managed to get it back up to 2e12

21:30 All checks okay, target has been very unstable, beam now at 3.8e8

22:30 All checks fine, target at 3e12 for past 45 minutes, beam at 4e8, current histogram attachment 16

23:40 All checks ok. Integral value for range to 4000 seems to be increasing for all histograms - meaning target is probably ok for now. Vacuum plot doesnt show any issues.

02:00 All checks ok. Integral values for proton peak have increased so assuming target is still holding as of now (only peak I can clearly isolate to get value from) - no indication that it is off via vacuum plot. 

5:00 All Checks ok. Integral values increasing. 

7:00 All checks ok, can't see target density as of 6:20

08:00 Run stopped as lost beam, histogram attachment 17

Run 77 started at 06:48

Cooler voltage setpoint 247.0 V.

07:05

DSSSD bias & leakage current OK - attachments 1 & 2

FEE64 temperatures OK - attachment 3

ADC data item stats OK - attachment 4

per FEE64 Rate spectra OK - attachment 5

Beam intensity 8.45e+7 particles

Target density ~5.34E11 atoms/cm2

09:02

DSSSD bias & leakage current OK - attachments 6 & 7

FEE64 temperatures OK - attachment 8

ADC data item stats OK - attachment 9

per FEE64 Rate spectra OK - attachment 10

Beam intensity 7.85e+7 particles

Target density ~5.29E11 atoms/cm2

11:00

DSSSD bias & leakage current OK - attachments 11 & 12

FEE64 temperatures OK - attachment 13

ADC data item stats OK - attachment 14

per FEE64 Rate spectra OK - attachment 15

Beam intensity 8.5e+7 particles

Target density ~6.1E11 atoms/cm2

13:00

DSSSD bias & leakage current OK - attachments 16 & 17

FEE64 temperatures OK - attachment 18

ADC data item stats OK - attachment 19

per FEE64 Rate spectra OK - attachment 20

Beam intensity 8.2e+7 particles

Target density ~6.1E11 atoms/cm2

22:15

New run 76 - beam on target with definite target overlap [coasting]

Cooler voltage setpoint 247.1 V.

FC20 read value 246.55 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm (new beam target overlap)

vertical beam position  -5mm

Beam intensity 7.5e+7 particles.

Target density ~6.2e11 at/cm2

Target temperature is 38.5 K. Values of E1 is 820 Hz, 2.6A, 1.85e-1 mbar

00:15

System and detector check is OK. E1 pressure is increasing slowly. target 4e+11/cm2

02:15

System and detector check is OK. E1 pressure is increasing slowly. P=2,2e-1 mbar Pump frequency is 807 Hz, 2.7A. Target 5e+11/cm2

03:15

System and detector check is OK. E1 pressure reaches 2,3e-1 mbar, thus flow is decrease a bit. Pump frequency is 800 Hz, 2.8A. Target 6e+11/cm2

04:15

System and detector check is OK. E1 pressure is stabilized. New values: 2.07e-1 mbar, 810 Hz, 2.8 A. Target 5e+11/cm2. Resonance peak not so visible- see attachment 1.

05:43

System and detector check is OK. E1 pressure is slowly increasing. New values: 2.13e-1 mbar, 807 Hz, 2.8 A. Target 5e+11/cm2. Beam intensity stable at 7e+7 particles.

Same settings as run 75.

Detector 4 is biased at 100V and switched from MEC to LEC.

The root histos have not been reset, i.e. they show combined statistics of run 75 and 76.

14:30

New run 75 - beam on target with definite target overlap [coasting]

Cooler voltage setpoint 247.2 V.

FC20 read value 246.65 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm (new beam target overlap)

vertical beam position  -5mm

Beam intensity 8.5e+7 particles.

Target density ~6e11 at/cm2

Target temperature is 36.6 K. Values of E1 is 820 Hz, 2.6A, 1.4e-1 mbar

16:00

Beam intensity 8.5e+7 particles.

Target density ~4e11 at/cm2

Target temperature is 36.6 K. Values of E1 is 820 Hz, 2.6A, 1.68e-1 mbar

DSSSD bias & leakage current OK - attachment 1

FEE64 temperatures OK - attachment 2

ADC data item stats OK - attachment 3

16:58

Pressure on E1 has risen to 1.74e-1 mbar. Target density ~4.5e11 at/cm2.

Turbo is decreased to 818-819 Hz. We will increase temperature sligtly to see if this helps.

17:11

Increase in noise on top left DSSD. Correlates with spike in the source seen on lassie. Moved servo motor out then in. Problem resolved. 

System checks OK

18:35

Tempature has been increase in small steps to 38.4 K. E1 appears to have stabalised at 1.71e-1 mbar. Turbo speed 818-819 Hz. 

Target density ~5.5e11 at/cm2. We will wait to see how it evolves over time.

18:47

Increase in noise on top left DSSD. Correlates with spike in the source seen on lassie. Moved servo motor out then in. Problem resolved. 

20:55

All checks OK

Tempature has been increase in small steps to 38.4 K. E1  1.81e-1 mbar. Turbo speed 818-819 Hz. 

21:48

System checks OK

22:14

Run stopped

90 keV/u beam on target, Target overlap confirmed with lifetime measurement using bunched beam - @ -12.5mm

We do not expect to see see Rutherford due to energy loss in the dead layer, using other particle detector for normalsiation.

Moved detectors in with servos only. Both arms are IN and stationary.

Left potentiometer = 36.54 mm

Right potentiometer = 37.96 mm

Horizontal beam position = -12.5 mm

Thresholds increased for all to 0x28 (400keV)

data rate is ~0.7 MB/sec

Electron cooler read values; Cooler voltage = 50V (dodgy accuracy need to ask about fc20 on monday), cooler current=0.26 mA.

15:50 All Checks ok. Overlap on beam found. Target at 4e12. Bottle at 90 bars.

7:00

Cooler voltage setpoint 247.4 V.

7:44

E1 Turbo at 808 Hz, 2.75 A

DSSSD bias & leakage current OK 

FEE64 temperatures OK 

ADC data item stats OK 

per FEE64 Rate spectra OK 

Beam intensity 7.5e+7 particles

Target density ~3E10 atoms/cm2

8:30

E1 pressure was too high (2.13E-1 mbar) and turbo frequency too low (807 Hz).

We increased T1 in steps of 0.2 K to 39.6 K, which improved in E1 (2E-1 mbar) and turbo freq. (813 Hz).

T1 was decreased again to 39.4 K.

After speaking to Nikos we slightly decreased the gas flow (~15 bar) as desribed in elog entry 631.

Values now: turbo (817 Hz), E1 pressure (1.78E-1 mbar) -> both improved

10:06

The gas flow was decreased in three steps, there is now change visible on the gauge (still ~15 bar).

The turbo frequency ist stable at 819 Hz and pressure at E1 is 1.45E-1 mbar.

The temperature is currently at 39.0 K and we will start decreasing it to try and bring the target density up.

DSSSD bias & leakage current

OK FEE64 temperatures OK

ADC data item stats OK

per FEE64 Rate spectra OK

Beam intensity 7.5e+7 particles

Target density ~2E10 atoms/cm2

11:50

All system checks OK

Target density is ~3e11 at/cm2.

Temoerature of the nozzle is curretnly 37.5K with E1=1.6e-1 mbar. Turbo running at 820 Hz

14:29

Run stopped

16:34

Like Run 73, but particle detector in YR10 now active, and recorded in MBS.

Clear effect of target on beam lifetime. Target off -> nearly no counts.

Attachment 22 - IPM (no target)

Attachment 23 - IPM (target)

Attachment 24 - YR10 particle detector (gap in events corresponds to target off period)

16.42 DSSSD bias & leakage current - attachments 1-2

DSSSD #4 currently conditioning at -20V

FEE64 temperatures OK - attachment 3

ADC, DISC, PAUSE & RESUME data item stats - attachments 4-7

System wide checks OK *except* WR deocder status aida04 - attachment 8

WR timestamps OK - attachment 9

per FEE64 Rate spectra - attachments 10-12

per FEE64 1.8.L spectra - attachments 13-14

per FEE64 1.8.W spectra - 20us FSR - attachments 15-16

pulser peak width aida06 69 ch FWHM, aida08 67 ch FWHM

Merger, TapeServer OK - attachments 17-18

ASIC settings 2025Apr08-13.45.30

 aida01-aida04 slow comparator 0xc

aida05-aida12 slow comparator 0x8

aida13-aida16 slow comparator 0x64, LEC/MEC 0x1

17.23 CRYRING vacuum and temperature - attachments 19-21

17.34 routine checks OK

target density c. 5e+12, beam 3e+6

18.40 changed target x,y position to check correlation between target density and detector counts. New position: x:-1500, y:2400.

checks OK.

target density c. 3.7e+12, beam 3.1e+6

20.00 online analysis - per DSSSD energy spectra - attachment 25

 t, h and p energy peaks clearly observed DSSSD #1 and #2 - p energy peak less clear in DSSSD #3

20.30 checks ok

target density increased to c. 5e+12 for some minutes then back at c. 3.7e+12, beam 3.1e+6.

21.47 checks ok

target density increased to c. 5.7e+12 around 21.35, then back at c. 3.7e+12. beam 3.1e+6.

22.30 online analysis - per DSSSD energy spectra - attachment 26

22.35 Analysis of data file G22-205/R74_29 - attachment 27

no timewarps, all deadtimes << 1%

22.45 DSSSD#4 bias -20V -> -40V, leakage current -2.7uA -> -4.09uA

23.14 DSSS\D#4 leakage current c. -9uA, return to bias -20V

23.21 target density slightly unstable in the last hour, changed nozzle position to x=-2000, y=2500.

00:04

Temps OK

System wide checks OK

Rates OK

Merger OK (1400 kb/s)

Target oscillating, but looks usable. Need to have another look at temperatures tomorrow morning.

01:57

Temps OK

Rates OK

Merger OK

Target getting thicker.

05:00

Temps OK

Rates OK

Merger OK

Target fluctuating

7:20 All sysytem checks ok. Target lost density @ 6;55 from 4.6e12 to 2.6e12 - will try moving. Update 7:30 after moving density back up to 4.4e12.

8:45 All Checks ok but target is fluctuating - really wants to be around 2e12. Had it up to 5e12 about 25 mins ago. Naughty target tbh.

9:25 All checks ok, gone to no storage as now tuning next beam energy.

10:30 All system checks OK, still tuning.

11:38 All system checks ok, still tuning. Frank entered cave to adjust magnetic field as the beam was not cooling at 90 keV/A

12:36 All checks okay, cave still open

13:40 All checks okay, tuning beam currently

14:50 All Checks OK. Target beam overlap currently happening - scanning range not showing anything. Target back on but not hitting - thickness 1.2e12.

Beam is back.New run started.

Cooler voltage setpoint 247.3 V.

23:18

DSSSD bias & leakage current OK 

FEE64 temperatures OK 

ADC data item stats OK 

per FEE64 Rate spectra OK 

Beam intensity 6e+7 particles

Target density ~4E10 atoms/cm2

01:01

DSSSD bias & leakage current OK - attachment 1 & 5

FEE64 temperatures OK - attachment 2

ADC data item stats OK - attachment 3

per FEE64 Rate spectra OK - attachment 4

Beam intensity 7e+7 particles

Target density ~5E11 atoms/cm2

03:03

DSSSD bias & leakage current OK - attachment 6 & 7

FEE64 temperatures OK - attachment 8

ADC data item stats OK - attachment 9

per FEE64 Rate spectra OK - attachment 10

Beam intensity 7e+7 particles

Target density ~4E11 atoms/cm2

05:00

DSSSD bias & leakage current OK - attachment 11 & 15

FEE64 temperatures OK - attachment 12

ADC data item stats OK - attachment 13

per FEE64 Rate spectra OK - attachment 14

Beam intensity 7.4e+7 particles

Target density ~5E11 atoms/cm2

05:15

Turbo frequency went below 810 Hz. Set temperature increased from 38.8 K to 39.0 K.

06:50

DSSSD bias & leakage current OK - attachment 16 & 17

FEE64 temperatures OK - attachment 18

ADC data item stats OK - attachment 19

per FEE64 Rate spectra OK - attachment 20

Beam intensity 7.5e+7 particles

Target density ~2.3E11 atoms/cm2

15:00

Cave closed, waiting for beam to come back.

Reset all ASIC settings to those in elog 737

DSSD4 remains OFF and is set to the MEC channel.

ADC data items and data writing to disk - Attachments 1+2

While the cave has been closed we warmed the target up to 80K and have now cooled back to 30.5K to increase the density which was dropping into the 10^11 range. We have now recovered densities in the mid 10^12 at/cm2 range.

Detector leakage current plot - Attachment 3,4

All system checks OK

Started at 16:20

EM and JG trying to get scintillator signals in MBS

Configuration completed?

Stopped 16:32

Pulser walkthrough conducted while the cave was open.

Pulser amplitudes 90000, 80000, 70000, 60000, 50000, 40000, 30000, 20000, 10000

DSSD4 was set to MEC and bias off as the detector had previously tripped.

All thresholds set to 0x64 for the pulser walkthrough

15:45

New run 71 - beam on target with definite target overlap [coasting]

Cooler voltage setpoint 247.3 V.

FC20 read value 246.75 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm18:00

FakeMotion script running

horizontal beam position 1.0 mm (new beam target overlap)

vertical beam position  -5mm

Beam intensity 7.0e+7 particles.

Target density ~4e11 at/cm2

Target temperature is 36.6 K. Values of E1 is 820 Hz, 2.6A, 1.4e-1 mbar

16:36

No difference observed between bunched and coasting

See attached screenshots to compare to previous run

Saw an increase in the data rate to disk ~ 2000 kB/s. On spectrum browser we saw aida15 had HEC reading hot. ASIC check on aida 15 resolved issue

18:00

Beam intensity 6e+7 particles.

Target density ~6e11 at/cm2

Target temperature is 36.6 K. Values of E1 is  820 Hz, 2.7 A, 1.5e-1 mbar

Aida03 detector temperature is 66 degree.

20:00

Beam intensity 6e+7 particles.

Target density ~6e11 at/cm2

Target temperature is 36.6 K. Values of E1 is  820 Hz, 2.7 A, 1.6e-1 mbar

Aida03 detector temperature is 63 degree. Screenshot is attached.

21:00

arget densityis dropped drastically. A temperature is ncreased signifiantly.

Beam intensity 6e+7 particles.

Target density ~2.7e9 at/cm2

Target temperature is 9 K. Values of E1 is  820 Hz, 2.7 A, 4.2e-2mbar

Aida03 detector temperature is 63 degree. Screenshot is attached.