Started after beam current was reduced by a factor of 2

plunger run # 116

Earlier:   CUP#6  100 enA

Now: CUP#6   50eNA

Beam dump 1.8 enA

Collimator  0.8 enA

The operator is asked to keep the beam dump current not larger than the present value.

Supposed Distance = 10 um

position of the target = 10 um

micrometer = 11.7 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.

Observed that detectors at theta 143 degrees count most.  Is this because they see beam dump?

plunger run # 126

Earlier:   CUP#6  100 enA

Now: CUP#6   50eNA

Beam dump 2.3 enA

Collimator  1.0 enA

RU : 5.44 MB/s

LF : 8.40 MB/s

Supposed Distance = 10 um

position of the target = 10.9 um

micrometer = 10.3 um

Voltage = 7.896 V

Plunger off set 60 um

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

plunger run # 137

Beam dump 2.5 enA

Collimator  1.0 enA

02:21 /onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0010.caendat

RU : 4.70 MB/s

LF : 7.92 MB/s

Supposed Distance = 10 um

position of the target = 10.7 um

micrometer = 9.8 um

Voltage = 7.89 V

Plunger off set 60 um

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

Data from current run - 35, with limited beam current and rates - see a recent post by Güray.
BU level, so what we see in Greware (both online & nearline).
Attached is the fold of Germaniums.
It seems way too large to me.
We are summing up the events and then, not surprisingly, having rubbish gamma-gamma matrices.
The gate is 1500 ns, while Ge are not so far away from each other.

Any fixed time differences should be corrected with LF configuration.
Having all Ge, ACS, and Neda TS-aligned at LF level, BU will do a good job with a reasonable short gate.

We need channel-by-channel TS differences.

The data we took and we are taking now can be recovered in terms of this correction later on.

Marcin can build the events correctly from LF level.
Let's try to do so with as short gates as possible and see again the gamma-gamma matrix and neutron-gated g-g 
matrix.

plunger run # 147

Beam dump 2.5 enA

Collimator  0.9 enA

Run Data = /onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0014.caendat

RU : 4.90 MB/s

LF : 8.07 MB/s

Supposed Distance = 10 um

position of the target = 10.5 um

micrometer = 9.2 um

Voltage = 7.93 V

Plunger off set 60 um

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

plunger run # 157

Beam dump 2.5 enA

Collimator  1.0 enA

Run Data = /onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0018.caendat

RU : 4.79 MB/s

LF : 7.69 MB/s

Supposed Distance = 10 um

position of the target = 10.2 um

micrometer = 8.9 um

Voltage = 7.94 V

Plunger off set 60 um

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

plunger run # 167

Beam dump 2.5 enA

Collimator  1.0 enA

Run Data =/onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0022.caendat

RU : 4.90 MB/s

LF : 8.01 MB/s

Supposed Distance = 10 um

position of the target = 10.2 um

micrometer = 8.8 um

Voltage = 7.941 V

nothing has changed. the situation is stable.

plunger run # 178

Beam dump 2.5 enA

Collimator  0.9 enA

Run Data =/onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0027.caendat

RU : 4.65 MB/s

LF : 7.52 MB/s

Supposed Distance = 10 um

position of the target = 10.1 um

micrometer = 8.7 um

Voltage = 7.97 V

nothing has changed. the situation is stable.

plunger run # 188

Beam dump 2.5 enA

Collimator  0.8 enA

Run Data = /onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0030.caendat

RU : 4.15 MB/s

LF : 7.69 MB/s

Supposed Distance = 10 um

position of the target = 10.2 um

micrometer = 9 um

Voltage = 8.964 V

Readout data decreased 5 mb/s to 4 mb/s during 6:30 to 7:30 am. slowly returning to normal value

plunger run # 196

Beam dump 1 enA (given by operators) * 7 (following entry ID#39) = 7 enA

Collimator   0.75  enA

Run Data =/onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0033.caendat

RU : 4.10 MB/s

LF : 7.48 MB/s

Supposed Distance = 10 um

position of the target = 10.2 um

micrometer = 9 um

Voltage = 7.94 V

plunger run # 208

Beam dump 0.75 enA (given by operators) * 7 (following entry ID#39) = 5.25 enA

Collimator   0.75  enA

Run Data =/onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0037.caendat

RU : 3.85 MB/s

LF : 7,29 MB/s

Supposed Distance = 10 um

position of the target = 10.2 um

micrometer = 9.3 um

Voltage = 7.93 V

// we noticed yesterday that GE at 143 degrees counts more than those placed at 117 and 101. The 511 keV line (+ background) is much more pronounced for Ge at 143 degrees. To investigate this issue we decreased the beam intensity to 0.3 enA ( value given by operators at the beam dump ). 

Conclusion - decrease of the beam intensity does not explain above observations (se attached figs)

plunger run # 216

Beam dump 0.3 enA (given by operators) * 7 (following entry ID#39) = 2.1 enA

Collimator     enA

Run Data =/onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0040.caendat

RU : 2.15 MB/s

LF : 5.60 MB/s

Supposed Distance = 10 um

position of the target = 10.6 um

micrometer = 8.8 um

Voltage = 7.8 V

we increased beam intensity to 1.25 enA (readout at the beam dump)

plunger run # 230

Beam dump 1.2  enA (given by operators) * 7 (following entry ID#39) = 8.4 enA

Collimator   0.6  enA

Run Data =/onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0047.caendat

RU : 5.88 MB/s

LF : 8.35 MB/s

Supposed Distance = 10 um

position of the target = 10.2 um

micrometer = 8.8 um

Voltage = 7.94 V

The beam is gone.

the beam comes back.

The counting rate in 511 keV line for sum of the Ge detectors placed at 101, 117 and 143 degrees (with approved ACS). The largest intensity is visible for Ge at 143 degrees, lowest for 101 deg.

=============================== RING 101

Integration in spectrum user_ge_ring101_acceptedACS_clone.spc

RESULT : 3895

=============================== RING 117

Integration in spectrum user_ge_ring117_acceptedACS.spc

RESULT : 9392

=============================== RING 143

Integration in spectrum user_ge_ring143_acceptedACS.spc

RESULT : 15767

The Coulex of 197Au (279.5 keV ) line is visible in all rings with a comparable intensity:

=============================== RING 101

Integration in spectrum user_ge_ring101_acceptedACS_clone.spc

RESULT : 12491

=============================== RING 117

Integration in spectrum user_ge_ring117_acceptedACS.spc

RESULT : 11443

===============================RING 143

Integration in spectrum user_ge_ring143_acceptedACS.spc

RESULT : 10460

beam stop due to the beam energy measurement

The beam energy: ~145 MeV

the beam comes back. The run 35 is still going.

plunger run # 257

Beam dump .... enA (given by operators) * 7 (following entry ID#39) = ... enA

Collimator  ....   enA

Run Data = /onlineNEDA_00/xData/hil099/run_0035_03-03-2023_00h04m26s/needleRU_i35_0035_0059.caendat

RU : 6.18 MB/s

LF : 8.44 MB/s

Supposed Distance = 10 um

position of the target = 10.2 um

micrometer = 8.8 um

Voltage = 7.94 V

Run 35 stopped. An attempt to check if we can get 5 MeV  higher beam energy.