The MBS daq was not writing data since June 2. 22:39 (run_0035.lmd)

This means, no detector and target timing is available for this period.

The reason is that the rfio server was running on atppc025, which crashed at that time.

We resumed running MBS now at 10.06. ca. 10:35. (run_0036.lmd).

The current bottle of D2 was installed on friday 06.06. at around 12:00. I assume we started at 200 bar.

Right now we have 50 bar remaining in this bottle (16.06. at 8:00).

This is an average consumption of ~15 bar/day

 150 bar / 9.83 days

Check the status of the DAQ system, with Tom. All correct. See attachments:

1 Leackage currents

2 ADC data item stats

3 White rabbit time stamps

Note: At 9:36 we thing they are working on cooling the beam, there is no target and the detectors are fully out.

9:16 cooled beam, carlo is starting new run r21

Target dencity = 1.47E11 atom/cm2 (10:30 am)

Horizon Y09 from 9 mm to 8 mm, checking different beam position (10:55 am)

Right arm is fully in (11:02 am)

By moving in the detector we are reducing the intencity (11:04 am)

Right numatic out, right servo in, potentiiometer at 38.38 mm (11:05 am)

Losing every second shot, tuning the numatic to get better parameters, beam tuning  (11:13 am)

Leaving the detectors out while going for lunch, still beam (11:42 am)

12.23 Both detectors 37mm in ( DSSSD wafer edge c. 5cm from beam axis )

System Wide Checks Update - Run 21

Temperatures ok, leakage current ok

AIDA16 said that there was an FPGA timestamp error, collected again and now all passed - timestamps on merger statistics page all good when checked

Attatchment 4: Temperatures

Attatchment 5: Waveforms layout 7

Attatchment 6: Waveforms layout 8

Attatchment 7: Wavforms layout 2

Attatchment 8: Waveforms layout 1

Attatchment 9: Leakage current ok

16:11 Both detectors 37mm in ( DSSSD wafer edge c. 5cm from beam axis ), target off, beam being tuned, what ever, still run 21

System Wide Checks Update - Run 21

Temperatures ok, leakage current ok

18:00 Run 21 contd. We have spent the afternoon trying to confirm whether we observe an overlap between the target and the beam. We varied the horizontal beam position and used the top left detector around 19-20 MeV region as a gauge for the count rate.

          This should be reasonably safe as the beam halo in this detector is primarily at low energies. We took the count rate over 10 shots into the ring as our gauge. Attached is a plot of the results of varying the beam position. Target density and gas pressure was apporximately constant throughout.

          We estimate -7 mm is the correct horiziontal beam position. We also had a call off Zoran while at this setting as he observed a decrease in the beam lifetime which was observed in HKR. See attached plot of the scan (attachment 10)

08:57 Doing morning check. Checked the leakage currents, all ok. Attachment 1

Tempritures of, attchment 2

System wide check, all correct.

Statistics ok, aida 4 was a little high, carlo oked it attachment 3 and 4 (hist)

Spectrum brozer, ok, attachment 5 and 6

Waveforem atachment 7 and 8

Checked merger, spinner spinning...

Attached screenshot of merger  9

11:15 Beam current is around 2.5E7 and the target dencity is 5.3E11 cm2, there was small isntability (dips) from the beam, reason unknown, all detectors stable.

Check leakage current, is stable,  attachment 1

Tempreture ok, attachment 2

System wide check, all pass

Statistics checked, attachment 3, aida 4 is still high, histograms attachment 4

Spectrum browser ok, attachment 5 and 6

Waveforms attachment 7 and 8

Checked merger, ok, spinner is spinning,

Attachment 9 is the merger info

12:21 Targer intencity started dropping quite dramatically. The beam position X value was adjusted to -11000, we got back above 4E11 /cm2

13:08 Beam current is around 2.5E7 pretty stable, target is working, 61E11 /cm2, stable

Checked leakage current, stable, attachment 1

Temp. stable, atatchment 2

System wide chack, all pass

Statistics checked, attachemnt 3, aida 4 should be checked, histogram of rates 4 attached

Spectrum browser, attached 5 and 6

Waveform attached 7 and 8

Merger ok, spinner is pinning,

Attached 9 merger info

23:53

Temperatures OK

System checks OK - white rabbit fail diff ~ 80

Pressures stable

Cryo temp = 129.2 K setpoint

Data rate ~1.2 MB/s

Leakage current ~ 3.47 uA

00:53

YR10 avg = 1.29E-10 mbar

YR09 avg = 8.7E-10 mbar

YR04 avg = 1.13E-11 mbar

YR07 avg = 1.76E-10 mbar

YR08 avg = 2.18E-9 mbar

Data rate ~ 1.1 Mb/s

Temperatures OK

system checks OK - white rabbit fail diff ~ 80

Pressure stable, cryostat temp setpoint = 129.2k

Leakage current = 3.47 uA

Beam intensity reads ~ 2.6-3E7

07:30
Some signals on the beam monitor, seems they are optimising it.

System Check OK
Temps OK
White Rabbit fail diff: 24
Leakage Current: 3.48uA
Pressures OK
Data rate ~1Mb/s

08:00
Beam seems to be back
Intensity ~7.8e7

Pressures OK
System check OK
White rabbit fail diff: 24
Write speed: ~1.3Mb/s
Leakage current 3.49uA
Cryostat Setpoint: 121.5K

9:14
Beam intensity around ~7.5e7

Pressures OK
System check OK
White rabbit fail diff: 24
Write speed: ~1.8Mb/s
Leakage current 3.49uA
Cryostat Setpoint: 121.5K

10:58
Started new run: 77

Nozzle clogged more when trying warming again.
Warming up, venting top and bottom to clean nozzle.
 

14:50

Temperature, Statistics fine (see screenshots).

System wide checks fine (see below).

All FEEs pass clock check.

All FEEs pass White Rabbit check.

ADC Calibration check:

FEE64 module aida02 failed
FEE64 module aida16 failed
Calibration test result: Passed 14, Failed 2

If any modules fail calibration , check the clock status and open the FADC Align and Control browser page to rerun calibration for that module

FPGA timestamp error check:

         Base         Current         Difference
aida09 fault      0x1 :      0xa :      9  
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

16:00 Slow comp thresh lowered to 100 keV in preparation for detector moving. Will have to test systematically what is the highest threshold we can accept

17:00 Temps fine. No overnight run.

Run 52 started at 17:53. Everything is running again. We started at 3E12 at/cm2

D+ beam deuterium target. D+ beam energy is now 0.3 MeV/u. (beam calc calculation is 0.3067 MeV/u).

All four detectors positioned fully out and stationary and also detector #4 is running again.

Left potentiometer = -3.03mm (corresponds to x = 0, which is the more trustworthy value)

Right potentiometer = 1.82 mm (corresponds to y = -1000, which is the more trustworthy value)

Ring cycle time is 5 seconds.

Cooler set value = 177.9 V, 4 mA. Read value = 177.65 V, 3.53 mA

All leakage currents look good.

Beam position. Vertical =0.0mm , Horizontal=1.0 mm

Data rate ~ 947kB/s

18:09: System check - everything perfect!

Leakage current attachment 1

Rates attachment 2

19:50: System check - everything marvelous!

22:05: System check - everything excellent!

22:50: System check - everything fabulous!

current spectra attachment 3

02:05

Temperatures OK

System wide checks OK

Statistics OK

Merger OK

Leakage current OK

Ring vacuum OK

04:52

Temps OK

System wide checks OK

Stats OK - attached

Merger OK - attached

Leakage OK - attached

Histos look good - attached

07:10

Temps OK

System wide checks OK

Stats OK - attached

Merger OK - attached

Leakage OK - attached

Histos look good - attached

11:31

All checks OK

13:54

All checks OK

Rates attached

16:30

Run 40 started.

D+ beam deuterium target. D+ beam energy is 0.75 MeV/u. (beam calc calculation is 0.7619 MeV/u)

Beam calc - Attachment 1

Target density is about 1e12 at/cm2

All four detectors positioned fully out and stationary.

Left potentiometer = 18.86 mm

Right potentiometer = 19.8 mm

Ring cycle time is 30 seconds. 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 = 439 V, 15 mA. Read value = 439.81 V, 12.88 mA

All leakage currents look good

Beam position. Vertical =0.0mm , Horizontal=-1.5 mm

Beam intensity ~1e8 on bunched beam, 1e7 on coasting. This is less intensity than higher energies, may require an increase in the morning. 

Data rate ~ 403kB/s

Lowered slow comparator threshold to 0x24 (360 keV) since we decreased beam energy.

18:36

Temps OK - attached

Rates OK - attached

Merger OK - attached.

Spectra appear to have a flat background to the right of Rutherford that was not there at higher energies.

The xy plot also does not seem to be as centered.

21:17

Tems OK

Stats OK

Merger OK

Leakage current stable

Run continues OK

Ring vacuum 2E-10 mbar, likely getting less target.

02:00

Temps OK

Stats OK

Merger OK

Leakage current OK

Run continues - attached

Ring vacuum as before

04:20

Temps OK

Stats OK

Merger OK

L. current stable

Run continues

Ring vacuum as before

07:00

All checks OK

Leakage currents remain stable.

We have accumulated good statistics. 3He peak does seem a bit off. Cooling could be slightly off. Problem is not so bad looking at Ey compared to Ex. Online code uses pulser calibration only so may be a bit off depending on Ey/Ex.

Target density has been stable in the 1e12-2e12 at/cm2 range overnight. A bit more would be good.

Will ask on call operator to check cooling and try to increase intensity.

Run stopped gas target off.

07:30

Note during the tuning process we observed the same structure at 2.5 MeV in DSSD 1 as we did overnight that may overlap with the 3He peak. Perhaps it can be removed offline. See final attachment

Run 47 started. Target cooling down after water cooler failure, beam only background

D+ beam deuterium target. D+ beam energy is 0.5 MeV/u. (beam calc calculation is 0.5143 MeV/u). See previous entry for beamcalc.

All four detectors positioned fully out and stationary.

Left potentiometer = 18.86 mm

Right potentiometer = 19.8 mm

Ring cycle time is 10 seconds.

Cooler set value = 297.2 V, 8 mA. Read value = 296.477 V, 6.97 mA

All leakage currents look good (except dssd4, currently stable at V=40)

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

Data rate ~ 25kB/s

13:00

Run stopped to allow tuning of parameters for 0.35 MeV/u

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. 

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

As run 66, optimisation of beam completed

DSSD4 now working and thresholds to 0x30 (480keV), switched to LEC

Tape service at 1.7MB/s

Did NOT reset the root histograms!!

11:30 All checks OK

13:48 All checks OK

15:15, fULL CHECK, STATUS - Okay. Target density ~2E12

16:15 All Checks OK. Target 2.9e12

17:30, Full check! status - okay. target 2.3e12

18:30 All Checks Ok

19:30 All Checks OK

21:30: All System Checks OK but targte density started dropping around 8:20. Tried to move the nozel but any x direction made it drop alot and y did nothing. Values hovering steadily between 1.1e12 to 1.4e12. Will try and move nozel again in 1 hour.

22:40: Full check, Status -okay! thickness 1.4E12. For more details look at the attchments

00:55: Full check. All looks okay!

03:55: Full check. All looks good!

06:28 Checks OK. Target density has dropped and is ~9e11 at/cm2. It will require some attention this afternoon

07:00 Run stopped. Final histogram attached. Number of counts somewhat obscured by background level.

11:30

Run 50 started.

D+ beam deuterium target. D+ beam energy is 0.35 MeV/u. (beam calc calculation is 0.3577 MeV/u)

Target density is about 4e12 at/cm2

All four detectors positioned fully out and stationary.

Left potentiometer = 18.86 mm

Right potentiometer = 19.8 mm

Ring cycle time is 10 seconds.

Target T1=30.1K, T2=31.8K.

Nozzle position unchanged since end of run 48

YR09-Etarget pressure = 2.05e-10 mbar.

Cooler  Read value = 207.1 V, 4.39 mA

All leakage currents look good (except dssd4, currently stable at V=60)

Beam position. Vertical =0.0mm , Horizontal=0.5 mm

Data rate ~ 172kB/s

Slow comparator threshold to 0x14 (200 keV) since we decreased beam energy.

13:00

All checks OK

We were seeing some rubbish obscuring the 3He peak. JM remembered setting the EYEX cut very high (3 MeV) on the online plot, Now it is reduced to 500 keV

See attachments of histograms before restarting code.
 

16:32 all checks okay
18:19 all checks okay
20:20 all checks okay
21:45 all checks okay

01:00 all checks okay

04:00 all checks okay

7:00

Run stopped - cave to be opened. Beam looks on when run was stopped.

Temps OK - attach

Leakage current stable - attach

Rates OK - attach

Merger OK - attach

Final spectra attached

09:30

Gas target shutter valve closed to save ring vacuum.

All checks OK

Stats at htis threshold with no beam attached.

Biased DSSD4 in steps of 5V from 60V since it has been stable since yesterday,

Was able to bias to 100V with no issues.

Experimented with slow comparator thresholds as we go down to lower beam energies

Checked deadlayer loses with SRIM, expected ruthford energies are as follows:

150keV/u -> 230keV

100keV/u -> 120keV

80keV/u -> 76keV

New thresholds:

aida1-4 0xc (120keV)

aida5-8 0x8 (80keV)

aida9-12 0x5 (50keV)

aida13-16 0x64(1MeV) set to MEC channel

Statistics and data rate with beam on but no target

Deleted April 24,25 and G22-86 from GSI, backup in Edinburgh