16:10

We start a new run after doing some test with the motor. Injection time is now a 6s, moving of the motors is working fine.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

No target

16:15

In the previous run while working on the target it was discovered that the valve was closed! Probaly this happened around 10 am, we are not sure.

The gas target inlet valve is open again, working on the target.

Beam energy = 3 MeV

Horizontal beam position = 7.0 mm, vertical beam position = 0.0 mm.

Beam intensity at inj ~ 2.5e7

Detectors are positioned IN pneumatic only. Left arm = 62.71, right arm =  64.60 mm

Histograms and stats zero'd, monitoring code restarted.

Beam in the ring ~ 7 minutes.

Pressure in YR09 E target ~ 4.5e-11 mbar.

18:03 ( Attchments 1 -4)

Still no target!

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

20:23

We have the target back. S1( grafana) 4.8e-8. The target thickness read by the system 5E11 atoms/cm2 but apparently the formula is wrong and the value should be almost e12 atoms/cm2.

. We have now proper beam and target and we

Beam energy = 3 MeV

Horizontal beam position = 7.0 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

22:52 (Attachments 1 -3)

Beam is very unstable

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

00:47

Beam is still very unstable.

We checked for beam-target overlap position and found a clear increase in counts at beam position 4.0 mm. We have left the beam at horizontal = 4.0 mm, vertical = 0.0

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

16.40 CB/ML install fibre optic cable from patch panel beneath dipole downstream of YR09/CARME chamber to VETAR2 front panel fibre connector - see attachments 1 & 2.

VETAR2 LCD display changes from magenta to cyan.

DAQ stop. DAQ reset. DAQ setup.

All system wide checks OK.

WR timestamp control - attachment 3 is timed 16.43.11 UTC+1

WR timestamp 0x17B101E7 7FCD1ACD -> 1707147827543349965ns -> 1707147827s -> Monday, February 5, 2024 3:43:47 PM UTC ( https://www.epochconverter.com/ )

DAQ server crashed around 24:00

Rebooted server but could not could not rescue remotely - could not contact raspberry pi in control of FEE bias.

Entered cave, rebooted raspberry pi. Would not accept remote connections.

Had to manually start DHCP service on carme-gsi using

systemctl start dhcpd

Raspi could then be connected.

Started DAQ, TapeServer and Merger as per usual. Tapeserver refuses writing to disk.

Checked merged - very odd timestamp situation. See attached. Timestamp look OK in the GSI WR tab. See attached.

Power cycled server and FEES

Timestamp issue solved. All are now reading 0x16 etc.

However tapeserver still does not write to disk. Reasons unclear. Possibly Merger is not merging and not passing data on?

Have to stop data collection until solved.

NEG power
SIP power
UHV1400 operating instructions

Cryostat set to 115K

15.51 1.8.W spectra 20ms, 2ms, 200us, 20us FSR - attachments 1-8

15.55 Lost control of motors - moving DSSSDs out

15.56 new run number 79

      ignore run number 80

17:58 new run number 81
      CB sets motion cycle from 20.28mm to 64.36mm

      Observe a second, higher energy peak during the part of the cycle where the DSSSD is moved out - see attachments 9-10

      Peak appears only when moving out. Does not appear when moving in/out manually on beam storage plateau. Does not appear when moving in synched with ring, waiting less than the storage time, and moving out.
      All seems to indicate it is due to beam injection and not moving out fast enough. Very weak halo piling up? Should be clear in the data depending on rate / strips affected.



18.45 new run number 82
      DSSSD position fixed 34.89mm

22.10 system wide checks OK *except* WR decoder status

	 Base 		Current 	Difference
aida01 fault 	 0xab60 : 	 0xab8c : 	 44  
aida02 fault 	 0x88d3 : 	 0x88fe : 	 43  
aida03 fault 	 0x23aa : 	 0x23d6 : 	 44  
aida04 fault 	 0x15d7 : 	 0x1603 : 	 44  
aida05 fault 	 0x2f03 : 	 0x2f0f : 	 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

      FEE64 temperatures OK - attachment 11

      ADC data item stats OK - attachment 12 

      merger, tape server and console OK - no merger error messages since startup - attachments 13-15


DSSSD bias -100V leakage current-3.2360uA

     run82 - integrated x & y strip energy spectra - attachments 16-17

1. Check Proxy server is correct

localhost : 8080

incoming connections 7070

Establish port

ssh -L 8080:proxy.gsi.de:8080 carme@atppc025

2. Check a password for remote access has been set up

3. Close anydesk and check it is *really* closed using

ps -o pid= -C anydesk

kill -9 any process (as root)

4 Restart AnyDesk

systemctl restart anydesk (as npg)

17.43 setup signals from detector movement controller.

See attachment 1
                                                         NIM               TTL                 TTL             +12V
Signal from CRYRING ------> CAEN N89 ------> LF4000 -------> CAEN N89 -------> LeCroy 222 -------> PCB amp -------> start move in
( active high )         TTL              NIM  FIFO  -------> CAEN N89 -------> LeCroy 222 -------> PCB amp -------> start move out
                                                    not(NIM)               TTL                 TTL    ^        +12V
                                                                                                      |
                                                                                                      |
CAEN N89 mode switch to OUT                                                                                                  PSU +12V 

Widths of signals from LeCroy 222
 move in = 75ms
 move out = 25ms

Note - the outputs of EG&G/ESN LF4000 FIFO could be connected directly to the LeCroy 222 as the inputs accept NIM and TTL

22:30 Shift handed over. DAQ OK. Target OK. Beam OK.

00:22 Temperatures OK

Stats OK

Good events OK

Scalers OK

System wide checks as usual - WR fails by 68 ns

Leakage current OK

Target OK

Motors OK

Pressure in ring 5E-10 mbar OK

Beam OK

02:26 - All OK as above

WR now fails by 80

Data rate ~800 KB/s

03:40 All OK as above

Data rate back to ~ 1900 KB/s

04:20 All OK as above

Started compressing files in WS3, monitor 1

Noticed bias is not as stable as it has been so far, but no reason for concern. See attach.

04:30 Saw a spike in counts similar to beam halo. See attachment. Did not see it before. No effects on leakage current. To be checked offline.

06:00 Could not see any more spikes

All other checks OK as before.

Data rate back to ~1000 Kb/s

06:32 Requested beam off for end of beamtime.

Left DAQ on - run R88

Turning off jet target as per Nikos instructions

Final cleanup + pulse walkthrough to be done by JM and OH later today.

Target nozzle removed - pressure in S1 now 1.93E-8 mbar

Valves closed

Entering cave to switch compressor off and change N backing pressure to 10 bar.

05:36

Run started.

Conditions as before, except left servo now really in.

06:24

Run continues OK, file R60_9

Temps OK. Stats OK. Merger OK. Write to disk OK.

System wide checks as usual.

07:30


      DSSSD bias & leakage current OK - attachment 4

      FEE64 temperatures OK - attachment 5

      ADC data item stats - attachment 6

      per FEE64 Rate spectra - attachment 7
      
      Beam intensity - ~ 4.8E7 pps

      Target density - 7.25E11 atoms/cm2
      

9:20


      DSSSD bias & leakage current OK - attachment 8

      FEE64 temperatures OK - attachment 9

      ADC data item stats - attachment 10

      per FEE64 Rate spectra - attachment 11
      
      Beam intensity - ~ 4E7 pps

      Target density - 7E11 atoms/cm2
      

DSSD off

FEEs off

Motors out, pin inserted, compressed air closed, power removed from motors box.

Motors and temperature logs are in carme-gsi:logs/G22-200

Next experiment will install new setup attached to gas target. Some baking and vacuum operations required. Everything should stay off for safety until they are done.

10:30

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

10.48 FEE64 temperatures OK - attachment 1

WR timestamps OK - attachment 2

ADC data item stats - attachment 3

per FEE64 Rate spectra - attachment 4

 why do we observe HEC data in aida15 asic #1?

per FEE64 1.8.L spectra - attachments 5-6

 ADC to 20MeV FSR - not clear when these spwectra were last zero;d

 currently 750keV/u D + no target ?

10.53 All histograms & stats zero'd

Merger, Taper Server etc - attachments 7-8

  bind error 98 for NewMerger server - not clear when these messahes were generated - added some returns to monitor whether these, or other, messages are repeated

DSSSD bias & leakage current OK - attachment 9

11:30

We noticed some odd peak structure in the rate energy histograms for the right hand side detectors. We took away the beam but this structure persisted. 

This was not observed in the total energy histograms, the reason for this is the applied multiplicity cut to the total histograms. Removing this cut the peaks are clearly visible (attachment 10). Putting the cut back in we see the peaks removed (attachment 11). These events correspond to some noisy strips on the detectors on the right hand side (see attachment 12). Notice the much larger rate on the RHS. Current ADC data items statistics show FEE modules for the RHS also much larger (attachment 13). We did not observe this with no beam (https://elog.ph.ed.ac.uk/CARME/554) but did with beam last night (https://elog.ph.ed.ac.uk/CARME/558) so there nust be some effect of having beam in the ring increasing the number of events on the RHS. Note the detectors are fully out and the events are localised in these strips. 

Note we have moved the detectorsand removed beam from the ring in this time period to investigate these peaks.

12:50

Run 10 continues. Temps OK. System checks OK. Merger OK, Tape server OK.

Leakage current OK.

Notice the 'beam peak' at 1.5 MeV is larger in the left hand side (attachment 14)

14:26

We have started the new_optimeren.py on pi@gas-stepper to try and align the gas target. Valves to the interaction chamber are closed.

Setting the nozzle X=-13000, Y=1000 we observe an increase in E4 from 4E-10 mbar to 2E-9 mbar. Moving either side we observe a drop in E4. We take this as the gas target being aligned.

Anton will now open the valves to the gas target.

Run 10 stopped.         

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.

09:38

As Run 65, no changes, CRYRING operators attempting to improve beam intensity.

We should be able to keep running while they do, but there is a chance of some missed injections or other oddities.

Checks OK

Root histograms NOT zeroed.

10:20

Checks OK

The turbo pump E1 is continuing to draw too much current and the rotation frequency has steadily decreased from 817 Hz at the beginning of the night shift to 800 Hz now. The frequency recovered after the temperature was increased.

Both of the valves (inlet and dump) have been closed to improve the vacuum in the ring.

Repaired Neg wires for D2000 with Oemer's help.

Cable #2 is fine. 

In Cable #4, wires 1 and 2 are swapped but it's impossible this happened when the connector came apart. The pins are crimped and secured with a screw. Most likely it was sold like this and there's no difference between wire 1 and 2 (same voltage).

Edit: SAES confirmed 1&2 are interchangeable.

10:21 June 17

New energy: 1.125 MeV/u

Target in. Run 98 started.

Run 99 overlap check.

Run 100 back to acquisition as run 98.

New run R84

Attempting to sync pneumatic movement with ring. Still see something on t out -> p out

Command to move out was being given relative to the wrong time.

Fixed it. Still see one-two events every time we move out around 4-6 MeV. Attempted to greatly increase time before next injection - no difference. Microphonics from moving the detectors? It's just one-two counts on entire detector, acceptable.

New run R85

Now moving in/out

Potentiometer: 23.10 mm to 67.19 mm