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GAMMA-ONLY NEEDLE NEEDI COULEX PLUNGER GENERAL
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  HIL099-134Sm, Page 12 of 15  ELOG logo
ID Date Author Type test Categorydown Subject
  Draft   Sun Apr 12 15:20:15 2026 OSTRuns General 

 

Quote:

RUN CONTROL = 41

Data =/onlineNEDA_00/xData/hil099/run_0041_06-03-2023_00h58m13s/needleRU_i41_0041_0050.caendat

RU =   8.13 MB/s

LF =   4.21 MB/s

Plunger ;

Plunger run = 98

Supposed Dist= 242.7 um

Micrometer =  245.8 um

Position =   9.7  um

Actual distance = 242.4 um

Voltage =  3.821  V

Beam dumb =  2 nA

Collimeter = 2  nA

 

  Draft   Mon Apr 13 10:08:23 2026 OSTRuns General 

 

Quote:

run control = 50

run data = /onlineNEDA_00/xData/hil099/run_0050_09-03-2023_00h50m28s/needleRU_i50_0050_0070.caendat

RU =  6.89 MB/s

LF =   3.42 MB/s

plunger:

plunger run = 847

actual distance =  532.2 um

supposed distance = 532.7 um

micrometer =   533.6 um

position =  299.5 um

voltage =  1.659 V

 

Beam dump: 1 nA

Colimator :  0.5 enA

 

  Draft   Fri Apr 17 18:27:19 2026 MKRuns General 

run control = 51

run data =  /onlineNEDA_00/xData/hil099/run_0051_09-03-2023_16h25m16s/needleRU_i51_0051_0002.caendat

RU =  6.43MB/s

LF =   3.49 MB/s

plunger:

plunger run = 896

actual distance =  532.1 um

supposed distance = 532.7 um

micrometer =   532.9 um

position =  299.4 um

voltage =  1.659 V

 

Beam dump: 1 nA

Colimator :  0.6 enA

  Draft   Sat Apr 18 14:47:12 2026 A.T.Runs GeneralRun 34 started

 

Quote:

Run 34 Started (33 was stopped due to acquisition problems)

Plunger Run : 105

Supposed Distance = 10 um

position of the target = 10 um

micrometer = 12.7 um

Voltage = 7.9 V

Plunger off set 60 um

Which means we are running 60 um + 10 um (read from position window of plunger) = 70 um.

at the first 10 min det # 5 was switched off

Ge det #            1         2        3          4         5        6          7          8          9           10           11          12           13         14         15

old scalers:         5        2.5      8          5         8.5     3          5         1.5        5           8.5          8.5          7.5         2.7        2.7         5      kHz

new (Grzes)        1.7     1         3.2       1.8      3.6     0.9       1.7       0.45    1.7          3.5         3.2          3.1         1.           1.          1.7    kHz

 

beam dump current 3nA

det # 5 scaler  7.7   kHz

stoppped 00:02 because beam current was reduced byu a factor of 2 (see note on the next run)

 

  63   Fri Mar 3 20:50:31 2023 IK, MP, GJOther Data analysisGe spectra

Ge rates increasing, similar to what it was 24h before. Asking to decrease beam intensity by a factor of 2.

Attached Ge spectra before decreasing.
 

Before decreas beam current was 1.75enA, afterwards 1.1enA.

Attachment 1: ge_rings101_117_143_Screenshot_2023-03-03_20-44-07.png
ge_rings101_117_143_Screenshot_2023-03-03_20-44-07.png
Attachment 2: Ge_rates_too_high.png
Ge_rates_too_high.png
  9   Wed Mar 1 00:14:28 2023 MPOther Beambeam energy
Beam energy measured:  148.2 MeV
Mind that this may be an overestimate (by ~1-2 MeV)
  11   Wed Mar 1 12:51:33 2023 MPRuns Beambeam on the target
Beam on the target:

target+stopper+beam dump: 25 enA   (1.7 pnA)    not stable
5 mm collimator:  0.8 enA 

data taking continued with run 0023
  100   Mon Mar 6 05:15:43 2023 JD, DWProblems BeamNo beam 05:10:00

No beam 05:10:00

  101   Mon Mar 6 05:16:46 2023 JD, DWProblem Fixed Beam 

Beam back on 05:15

  107   Mon Mar 6 09:53:06 2023 OSTProblems BeamBeam dump decreased 2.5 nA to 1.5 nA- stopped run 41

9:20 to 9:50 am beam current stayed 2.5 nA . After 9:50 am decrease 1.5 nA

  113   Mon Mar 6 17:19:24 2023 OSTProblems Beambeam unstable and a little high

16:30 beam increased 5 mb/s to 9 mb/s and stayed 1 hour 9 mb/s

17:10 beam fixed. stable

  127   Tue Mar 7 09:18:01 2023 OSTProblems Beamrun number 44 crashed and local filter turned red-but data saved

9:08 local filter turned red. Both .caendat and   LF .adf files still incrementing. Stopped run 44, started run 45, looks OK.

 

 

Attachment 1: run_control_7mar2023_0910.png
run_control_7mar2023_0910.png
  128   Tue Mar 7 09:20:53 2023 OSTProblem Fixed Beamrun 45 start-local filter turn green

I started run 45, and local filter turn green everything is ok.

  144   Tue Mar 7 20:42:03 2023 IPProblems Beambeam unstable

There was a problem with the beam from 20:19 to 20:30.

Now it is fine.

  153   Wed Mar 8 02:45:53 2023 KS, KSzOther Beamincrease in Counting Rates

Since 2:32 increased counting rate observed:

Sinde 3:45 decrease to 1.5 kHz ch4.

run control = 48

/onlineNEDA_00/xData/hil099/run_0048_08-03-2023_01h08m57s/needleRU_i48_0048_0007.caendat
run data =

RU =  8.69 MB/s

LF =   3.79 MB/s

Eagle Rated ch4: around 2.3 kHz

plunger: (2:48)

plunger run = 514

actual distance =  382.7 um

supposed distance = 382.7 um

micrometer =   383.5 um

position =  149.8 um

voltage =  2.144 V

 

Beam dump =  1.5 nA

Collimater=  0.5 nA

  156   Wed Mar 8 07:30:15 2023 KS, KSzProblems Beambeam unstable

The beam was unstable from 7:18 to 7:25.

  157   Wed Mar 8 07:57:05 2023 IKProblems Beambeam unstable

The beam was unstable from 7:55. Stabilized around 8:03.

Counting rates are higher, EAGLE det4 went to ~2.5kHZ from ~2kHz (attached).

According to the operator, a bit of a tuning was done, current is 1nA.

 

run control = 48

run data =  /onlineNEDA_00/xData/hil099/run_0048_08-03-2023_01h08m57s/needleRU_i48_0048_0041.caendat

RU =  10.4 MB/s

LF =   4.3 MB/s

 

 

 

 

Attachment 1: Screenshot_2023-03-08_08-17-41.png
Screenshot_2023-03-08_08-17-41.png
  165   Wed Mar 8 14:47:34 2023 AMRuns Beambeam unstable

two drops in beam intesitivity at 14:33, 14:37 and 14:51

  185   Thu Mar 9 13:22:37 2023 OSTOther Beambeam stopped 13:21-13:24 for control
  186   Thu Mar 9 13:37:33 2023 OSTOther BeamBeam stopped 13:37-13:49 for control again.
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