Connected all FEEs.

The two top fees corresponding to the bottom right detector are connected to damaged flexi rigid PCBs. The top one is missing an pin that should not be connected to anything, while the bottom one has a slightly cracked connector and is missing the top left pin. Spares should be in Edinburgh.

Found that the flexi rigid PCB connected to the bottom most FEE of the bottom-left detector has a damaged ground lemo connector. Possibly pulled during mounting? The bias cables were off most of the time. Seems to bias fine using the other bias lemo, but not ideal.

Attached, a V-I plot of the four detectors being biased. Note bottom-left was only biased to 120V vs. 150 since it shows relatively high leakage current. Time is wrong - bias was given over ~2 minutes. Unclear why the x-axis is incorrect.

Leakage currents for all detectors, and especially bottom-left and bottom-right drop significantly waiting a sufficently long amount of time, e.g. down to ~5.5 uA after 15 minutes.

To create this plots in case it is needed.

ssh to CARMEbakingpi

cd Programs/caenlogger

python3 caenlogger.py

This will capture the data and pass it to the server (carme-gsi) in ~/caen_current.dat where they will be APPENDED. Delete / save / move the file from the CARME server if required. Backups are in Programs/caenlogger/bias_logs

THEN Bias on

THEN

ssh carme-gsi

cd Programs/caenlogger

gnuplot plot_current.gp

Found two leaks in the welding of the manifolds, marked them in tape. Manifold to be repaired on Monday. Remember to re-install missing hoses, which are  in a bucket in the cave.

See attached how it is supposed to look like.

Left hand hose (inlet) was too short and was cut to dismount the manifold. Davide will obtain a new tube of the same type and mount it for us. NOTE THAT THE INLET connector (BLUE manifold) was leaking. Unclear if this was the hose or poor plumbing.

Installed cable management system that was never used during the last beamtime. Started to thread cables through it. There should be sufficient space to re-install the manifolds with the cable tray in place. If this is difficult, the tray is installed with zip ties only so altering position should be relativly straightforward. The mounting points of the outlet manifold on the CARME chamber can also be rotated around to give a bit more space.

Cleaned up some boxes and moved heaters and some empty boxes to the CRYRING roof.

11:00

Changed slow comp threshold to 0x32 (500 keV). Checkloaded.

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

20:00

The beam is set at the correct energy, operators cross-checked it again. What we see  at 750 is due to the molecular beam.  The operotors are trying to optimize and get rid of this in the next 30min.

Temps and system checks OK

Leakage current OK

Merger and tape server OK

Potentiometer at 28.06 mm and 29.23 mm

20:30

Keep going with the beam tests. A new peak appears around 950 keV( See attached). Still try to understand what it is. The operators keep going

22:03

Before this run we checked quickly  beam with the target on but it does not make sense with the current status of the beam.

We removed target and starte Run14

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

17:30 File G22-88/R8

Pulser walkthrough

EGG Ortec 448 Pulser

Amplitide 90,000-10,000 @ 10,000 step
Normalise 5.0
Attenuators x5 IN
t_r 100ns
Tau_d 50us
Frequency Int Osc 50Hz
Polarity + ( - polarity via Cooknell SA1 Sum & Invert Amp )

18:10 Moved to new run R9

Pulser off. Overnight background.

Optimised motor motion during run R58

Moved 2 mm in (20.3 potentiometer)

29.47 potentiometer

36.5 potentiometer

(started moving pneumatic)

64.36 potentiometer

74.03 potentiomater (servo in by 10 mm)

Moved in, collected counts for 5 minutes, moved out, waited for re-injection.

20.3 - 400 counts on the Rutherford peak, bins 125-131 on lowEnergyExTotalDSSD0

20.47 - 646

36.5 - 827

64.36 - 3900

74.03 - 10040

Based on Rutherford rate ratio, estimated we are 40-50 mm away from interaction point, i.e. beam roughly 1-2 cm on outer half of ring which may be consistent with BPM measurement in YR08

Decided to use 74.03 mm for data collection.

Started data acquisition on R59 at 17:27

Beam 3E7 at injection, 600 second storage, 3 second between cycles

Target pressure 1.3E12 based on 8.21E18 x S1=1.6E-8

For 200keV the optimal horizontal position is -5mm.
For 250keV the optimal horizontal position is -2mm.

Both values are already given to the operators, so tomorrow we can just switch to 200keV and go on :)

Nonetheless, we now went to 250keV and start measuring.

23:00 DAQ restored and data now being written okay. Checks all okay, see screenshots below. Histograms reset. 40 bars in bottle @ 23:45 - should last 30 hours.

12:00 Checks all ok. No problems with aidas or writing to disk.

01:10 Checks all ok.

02:05 Checks all ok. See attatchment 6 for peak update after reset histograms 3 hours prior. Target okay, dropped a little to 6e12 but seems to be going up itself. Will monitor and then move position if needed.

03:10 During checks, noticed detector 4 had tripped so turned it off. Writing to disk increased alot, statistics increased to alost 250000. Put aida13-16 in low/medium energy. Started new run. (see attatchment 7-14 for before and afters)

RUN 91

03:15 Checks all ok after turning off detector 4. Moved target around and got abit more density but x is very sensitive and y did not seem to do much. Density 5.5e12.

04:30 Checks all ok. Target decreasing in density - monitoring it.

04:35 Target density back up to 1e13 after moving in y.

05:30 Checks all ok. Target density decreased slightly to 8e12

06:30 Checks all ok, target density stable for past hour

07:30 Checks all ok

08:30 Checks all ok, target density at 1e13 for past two hours

09:00 Run stopped

07:41

Switching to bunched beam to check D vs H content.

8:24

Attach 1&2

ONE spill

Detectors fully out

Switched to bunched beam

12 seconds pre-acceleration

100x cycles (600 seconds) -

Loss over 600 seconds 3.97E7 ions to 3.40E7 ions, i.e. negligible.

Attach 3&4

Coasting beam

12 seconds pre-acc

100x cycles

Attch 5&6

Coasting beam

12 seconds pre-acc

100x cycles

Detectors pneumatics IN

Attach 7& 8

Coasting beam

6 seconds pre-acc

100x cycles

Detector pneumatics IN

Attach 8&9

Coasting beam

12 seconds pre acc

200x cycles

Detector pneumatics IN

Running in this configuration for the rest of the shift

Target is barely 1E11 atoms/cm2 and keeps decreasing

09:47

12 seconds pre acc

200x cycles

Detector pneumatics IN, not moving

Running in this configuration for the rest of the shift

Target is barely 1E11 atoms/cm2 and keeps decreasing

Temps OK, checks OK, Stats OK

Writing to disk rate OK

11:22

Targets gets thinner and thinner <1E11 atoms/cm2

Temps OK System wide checks OK Merger OK

Rates OK

13:02

Temps OK. Target around 1E11 atoms/cm2

Merger OK

Rates OK

Morning shift

08:16 - as run 18, target off

9:00 Increased storage time to 5 minutes. Aquired data after initial beam loss. Attach 1 &2. Far less H2+ vs D.

Temps OK

Rates as before

10:00 beam being optimised to reduce 2H+ content

Rates in aida 13, 14 suddenly spike as during overnight. Checkloaded repeatedly. No effect. Increased thresholds in 13, 14 to 0x32 bringing them in line with 15,16.

12:50

We started test with beam

Test1 ( Attached 12-52-55)

Horiz. offset: 8mm

Max vuel on 1.5MeV =1480 counst

Test2

Horiz. offset: 7mm

Test3

Horiz. offset: 6mm

target density=2.4E11

Test4

Horiz. offset: 5mm

target density=from 1.7E11 to 2.5E11

Test5

Horiz. offset: 4mm

target density=from 5.6E11 to 1.1E11 several fluctuations

Test6

Horiz. offset: 3mm

target density=1.1E11 several fluctuations. Until now we do not see a clear  signel from the reaction!

Test7

Horiz. offset: 2mm

target density=1.1E11 several fluctuations.

Test8

 Beam back again. Coasting beam. Detectors IN

Horiz. offset: 8mm

xy and energy histograms - attachment 12 and 13.

Test9

Bunched beam Detectors IN

Horiz. offset: 8mm

xy and energy histograms - attachment 14 and 15.

Test10

Horiz. offset: 6mm

xy and energy histograms - attachment

target:1.6E11

xy and energy histograms - attachment 16 and 17.

Afternoon shift

From previous overlap tests we can see that moving the beam position does cause a change in the number of events observed in the detectors.

But the change in events appears to be due to beam halo hitting the detectors rather than elastic scattering. New approach required.

We have varied the beam position (horizontal) in 1mm steps from 0mm to 9mm (the maximum allowed). We do this with the target ON and then with the target OFF.

Integral of events ~1.5 MeV taken . Difference between the target and no target plotted to gauge overlap position.

Note we have moved left arm fully out as we were worried about beam hitting dssds on injection. Will check overlap with right dssds only as left dssds have very low rate at this position.

We have determined the overlap position is about 7.0mm horizontal

Attachment 18 shows initial scan.

Attachment 19 shows a second scan in the region we highlighted as possible overlap.

01.07 DAQ continues file G22-88/R1_46
      background alpha

      DSSSD bias OK - attachment 1
      FEE64 temps OK - attachment 2
      ADC data item stats - attachment 3
       aida15 asic #2 u/s - rate c. 266k 

      aida11 1*L spectra - attachment 4

      ADC data items/s Merger, Tape Server & Merger stats - attachments 5-7
       data rate to disk c. 2Mb/s dominated by aida15 asic 2


10.05 DAQ continues file G22-88/R1_79
      background alpha

      DSSSD bias OK - attachment 8
       ambient temperature 16.8 deg C
      FEE64 temps OK - attachment 9
      ADC data item stats - attachment 10
       aida15 asic #2 u/s - rate c. 266k 

      aida11 1*L spectra - attachment 11

      ADC data items/s Merger, Tape Server & Merger stats - attachments 12-14
       data rate to disk c. 2Mb/s dominated by aida15 asic 2

10.12 per FEE64 Stat spectra - attachment 15
      missing channels aida03, aida04, aida05 & aida15
      Check ASIC load aida03, aida04, aida05 & aida15

13:25 Overnight leakage current plot - att 16


13.38 DAQ continues file G22-88/R1_92
      background alpha

      DSSSD bias OK - attachment 17
       ambient temperature 16.8 deg C
      FEE64 temps OK - attachment 18
      ADC data item stats - attachment 19
       aida15 asic #2 u/s - rate c. 266k 

      aida11 1*L spectra - attachment 20
       ASIC check load at 10.12 should result in 1-2 hits per channel in the Stat spectra aida03, aida04, aida05 and aida15
       Channels which continue to show zero counts likely indicate a FEE64-adaptor PCB connection issue
       Channels which now show 1, or more, counts cf. attachment 15 likely correspond to channels now working following the check ASIC load

      ADC data items/s Merger, Tape Server & Merger stats - attachments 21-23
       data rate to disk c. 2Mb/s dominated by aida15 asic 2

13.48 Stopped DAQ file G22-88/R1_93

      DSSSD bias OFF
      FEE64 power OFF


16.00 Installed FEE64 power cable to aida16
      Replaced aida15 with new FEE64 MAC 41:f6:5a

      Update dhcpd.conf
      Update MIDAS config to include aida16

      FEE64 power ON
      
      All system wide checks OK

      DSSSD bias OK - attachment 24

      FEE64 temperatures OK - attachment 25

      ADC data item stats - attachment 26
       aida15 rate changes from c. 260k to c. 25k ( 2x 'hot' channels, 1x channel missing, all other channels OK )

      per FEE64 Rate spectra - attachment 27

      per FEE64 1.8.L spectra - attachments 28-29
       pulser peak width aida11 44 ch FWHM, aida14 57 ch FWHM

      per FEE64 1.8.W spectra - 20us FSR - attachments 30-31

      
     Update NewMerger startup script and Options for 16x FEE64s - see attachments 32-33


16.20 file G22-88/R2
      Pulser 50Hz

16.28 DAQ stop

      Pulser OFF

      All histograms zero'd

16.33 DAQ starts file G22-88/R3
      alpha background

      ADC data item stats OK - attachment 34

      NewMerger, TapeServer and Merger stats - attachments 35-38

16.50 Pulser peak width spreadsheet for file R2 - attachment 39

20.32 DAQ continues file G22-88/R3_9

      DSSSD bias OK - attachment 40

      FEE64 temperatures OK - attachment 41

      ADC data item stats - attachment 42
       aida15 rate c. 25k ( 2x 'hot' channels, 1x channel missing, all other channels OK )

      per FEE64 Stat spectra - attachment 43

      Merger, Merger stats and TapServer - attachments 44-46

      Disc data items - attachment 47
       aida15 disc rate c. 8k
      Disable aida15 disc ( fast comparator ) outputs for asic#3 - attachment 48 
      Disc data items- attachment 49
       all FEE64s rate << 1Hz
    
     Update NewMerger startup script and Options for 16x FEE64s - see attachments 32-33

09.30 DAQ continues file G22-88/R3_17

      DSSSD bias OK - attachment 1
      ambient temperature 16.8 deg C

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachment 3
       aida15 rate c. 25k ( 2x 'hot' channels, 1x channel missing, all other channels OK )
       aida01 rate c. 45k ( 2x 'hot' channels )

      per FEE64 Stat spectra - attachments 4-5

      per FEE64 1.8.L spectra - attachments 6-7

      per FEE64 1.8.W spectra - 20us FSR - attachments 8-9

      Merger and TapeServer - attachments 10-11

09.36 Check ASIC load
      No change to aida01 ADC data item rate

      Last access times of data files indicate that data rate changed c. 05.00 - 06.00 this am.
      No obvious vacuum/temperature transients in last six hours.

09.55 All system wide checks OK except
       FPGA timestamp errors - attachment 12
      WR timestamps OK - attachment 13

10:06 V-I plot overnight - attach 14.

13.35 DAQ continues file G22-88/R3_22

      DSSSD bias OK - attachment 15
      ambient temperature 16.8 deg C

      FEE64 temperatures OK - attachment 16

      ADC data item stats - attachment 17
       aida15 rate c. 35k ( 2x 'hot' channels, 1x channel missing, all other channels OK )
       aida01 rate c. 51k ( 2x 'hot' channels )

      per FEE64 Rate spectra - attachments 18

      per FEE64 Stat spectra - attachments 19-20

      Merger and TapeServer - attachments 21-22

06.40 DAQ continues file G22-88/R3_42

      DSSSD bias OK - attachment 1
      ambient temperature 16.8 deg C

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachments 3
       aida15 rate c. 34k ( 2x 'hot' channels, 1x channel missing, all other channels OK )
       aida01 rate c. 75k ( 2x 'hot' channels )

      per FEE64 Stat spectra - attachments 4-5

      Merger and TapeServer - attachments 6-7

      All system wide checks OK except
       aida02 & aida08 FPGA timestamp error - attachment 8

      WR timestamps OK - attachment 9

09.47 DAQ continues file G22-88/R3_46

      DSSSD bias OK - attachment 10
      ambient temperature 16.8 deg C

      FEE64 temperatures OK - attachment 11

      ADC data item stats - attachments 12
       aida15 rate c. 34k ( 2x 'hot' channels, 1x channel missing, all other channels OK )
       aida01 rate c. 75k ( 2x 'hot' channels )

      per FEE64 Stat spectra - attachments 13-14

      Merger and TapeServer - attachments 15-16

09.52 per FEE64 Rate spectra - attachments 17-18

      per FEE64 1.8.L spectra - attachments 19-20

      per FEE64 1.8.H spectra - attachments 21-22

      per p+n FEE64 1.8.W spectra - 20us, 200us, 2ms & 20ms FSR - attachments 23-26

      per n+n FEE64 1.8.W spectra - 20us, 200us, 2ms & 20ms FSR - attachments 27-30


10.11 Merger stats blocks 0-4, 14-16 - attachments 31-38

10.14 aida01-aida04, aida14-aida16 stats- attachments 39-45

10.21 Overnight V-I attach 46

10.23 Save current ASIC settings 2024Feb05-10.22.28
       changes to disc mask and LED waveform threshold for some FEE64s

10.32 Analysis of data file G22-88/R3_45 - attachments 47
       deadtime aida01 c. 0.5%, all other FEE64s deadtime c. 0%


13.07 DAQ stop file G22-88/R3_50
      Stop merger
      Stop tapeserver

Afternoon: Tested detector motion. Channels on p+n strips drop out with high threshold (1 MeV), but not with low threshold (100 keV). No issues on n+n strips. Reasons unclear.

13.41 DAQ start - file G22-88/R4

Pulser walkthrough

EGG Ortec 448 Pulser

Amplitide 90,000-10,000 @ 10,000 step
Normalise 5.0
Attenuators x5 IN
t_r 100ns
Tau_d 50us
Frequency Int Osc 50Hz
Polarity + ( - polarity via Cooknell SA1 Sum & Invert Amp )

File G22-88/R4

14.08 DAQ stop file G22-88/R4_8

Mounted both gate valves and support. Gate 
valves could not be installed one bolt 
rotated from 90 degrees as per drawings 
due to mechanical conflict with back foot.

Using rotating flanges some small rotation 
from 90 was achieved. This may be 
sufficient given the reason for the 
rotation was to avoid mechanical conflicts 
with ring parts that are no longer there.

Valve struts had to be modified as gate 
valve is much lower and close to Al frame 
than in Daresbury.

ML suggested that the reason for the 
change in height mentioned in previous 
entry is that the ring gate valve to YR10 
is not centered. Solutions will be 
considered when the other two setups in 
YR09 are mounted and the alignment 
situation is more clear


Noted a few blind flanges are bluish, 
which indicates SS 304 instead of 316. Did 
we get the wrong ones from ITL? Did we 
swap them in Daresbury by mistake? Is it 
just an odd colour?


Installed turbo pump on top gate valve, 
Pirani gauge provided by ABD (where is 
ours?) and pumped down.

Reached 10-1 mbar in 10 minutes. Turbo on.
Reached 10-5 mbar on IE514 in 17 more 
minutes (where is its manual?)

Will leave pumping overnight.

Pressure found in 10-7 mbar range.

Decided to leak test anyway for safety.

Closed top valve. Vented turbo and backing 
line. Installed additional valve and T 
piece.

Pumping down again. Will begin leak 
testing soon.

Leak tested CARME via He leak tester + He 
bottle. No leaks could be found. Some 
indication of potential leak close to 
blind flange on bottom valve - disappeared 
after closer checks.

Outgassing from cables? If so second turbo 
may be required for baking.


Removed leak tester. Scroll on, turbo on. 
Pumping down overnight.


Tested baking system. Missing:
- Monitor (not shipped from DL??)
- Monitor power cable
- Power cable for USB hub (not shipped??)

Could find the first two, but monitor is 
of poor quality.

USB to RS232 cable damaged in shipping 
(poorly secured). Still works, may be 
worth repairing but not trivial. Only 
works plugged in to top USB 3 port on Pi.

System tested and still working aside from 
these issues.


Connected webcam to pi facing IE514 
display. Will take pictures every hour on 
the hour as in DL.

Will stop pumping tomorrow pm due to 
imminent shutdown.

Pressure at 5E-6 mbar decreasing.

Continued to mount flanges as per previous ELOG entry.
Peter also remarked that the wires look a bit loose inside the holes, although this is how they were during
dirty tests in Edinburgh.

Attempted to pack the wires in two holes rather than 4 - too tight. Cannot close.
Packed the wires in 3 holes instead. Better, but still a bit loose. Wire harness feels quite robust and no
obvious strain is placed on the connectors.

#1 flange left with four strands for now.
Connectors were tested in this way in Edinburgh for motion tests. No broken cables after several thousand
repetitions.

Had troubles with second flange being mounted. Glove was caught under MACOR connector. Managed to free it
somehow with a cleaned screwdriver. Other half of the flange refused to go in due to bent pins, until NB was
able to repair it.
Mounted as #5.

Most other connector pins OK. Had to adjust a very small number. Cause of damage unclear - transportation? See
photos.

Took some pictures inside the chamber. Most connectors look OK, but

- One harness is touching the NEG wires (#2). This could be an issue. Will try to move it tomorrow
- Wires hanging from the top may be putting a lot of weight on the connectors. See pictures. Given number of
wires this may be acceptable.
- One harness is touching the NEG cage. Definitely an issue. Will fix tomorrow

Top/bottom flanges mounted with short harnesses. Side flanges mounted with long harnesses.

Two flanges left to mount.
Only #1 has been tightened. Other flanges left finger tight for Grossmontage to tighten properly tomorrow.

Outside motor to be fixed tomorrow.