 Thu Jun 20 11:26:14 2024, Shahab, Ragan, Runs, NTCAP started
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NTCAP started with 2 MS BW. |
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Thu Jun 6 10:09:27 2024, Jan, General, NECTAR ELOG @ LP2i
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The main elog for this experiment is on the LP2i webpage:
https://www.lp2ib.in2p3.fr/elog/NECTAR/
Use this GSI-elog only in case of trouble with the LP2i server |
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Wed Jun 12 12:28:07 2024, Jan, DAQ, TPAT and TRIGGER mapping
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The trigger pattern (TPAT) of the TRLO module assigns different TPATs for each combination of logically linked incoming triggers.
Our list of incoming triggers on the ECL & LEMO inputs of the TRLO is the following:
ECL_IN(1): Telescope
ECL_IN(2): Fission
ECL_IN(3): HeavyResidual
ECL_IN(4): SolarCells
ECL_IN(5): Xray-90
ECL_IN(6): Xray-145
LEMO_IN(1): jet-ON
LEMO_IN(2): jet-OFF
The current logic in the E028.trlo config in MBS folder creates the following TPATs:
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TPAT | Detector
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0 | Tel AND jet-ON
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1 | Fis AND jet-ON
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2 | HRes AND jet-ON
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3 | Cell AND jet-ON
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4 | (Xray-90 OR Xray-145) AND jet-ON
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5 | Tel AND jet-OFF
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6 | Fis AND jet-OFF
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7 | HRes AND jet-OFF
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8 | Cell AND jet-OFF
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9 | (Xray-90 OR Xray-145) AND jet-OFF
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The TPATs start counting at 0 here, be aware that the LogicalMatrixUnit (LMU) in TRLO config does start counting at 1. E.g. TPAT 0 is defined by [trig_lmu_out(1)= tel AND jetON].
For each event several TPATs can be active at the same time, i.e. coincidences like [Tel & HRes], which do not have an individual TPAT assigned for their coincident occurance, we would see TPATs 0 and 2, in case the jet-ON signal is present. To get an individual number for each of those coincidence channels, the expanded TPAT (EPAT) is used. It is created by adding up 2^TPAT for each active TPAT:
EPAT = Sum_i( 2^TPAT_i )
As an example EPAT 27 is the sum of TPATs 0, 1, 3, 4 and a coincidence between Tel/Fis/Cell/Xray.
27 = 2^0 + 2^1 + 2^3 + 2^4
A table for the first 5 TPATs is given below, i.e. for all jetON events.
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EPAT | TPAT combination | Detectors
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1 | 0 | Tel
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2 | 1 | Fis
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3 | 0 + 1 | Tel + Fis
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4 | 2 | HRes
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5 | 2 + 0 | Tel + HRes
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6 | 2 + 1 | Fis + HRes
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7 | 2 + 1 + 0 | Tel + Fis + HRes
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8 | 3 | Cells
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9 | 3 + 0 | Tel + Cells
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10 | 3 + 1 | Fis + Cells
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11 | 3 + 1 + 0 | Tel + Fis + Cells
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12 | 3 + 2 | HRes + Cells
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13 | 3 + 2 + 0 | Tel + HRes + Cells
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14 | 3 + 2 + 1 | Fis + HRes + Cells
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15 | 3 + 2 + 1 + 0 | Tel + Fis + HRes + Cells
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16 | 4 | XrayOR
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17 | 4 + 0 | Tel + XrayOR
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18 | 4 + 1 | Fis + XrayOR
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19 | 4 + 1 + 0 | Tel + Fis + XrayOR
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20 | 4 + 2 | HRes + XrayOR
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21 | 4 + 2 + 0 | Tel + HRes + XrayOR
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22 | 3 + 2 + 1 | Fis + HRes + XrayOR
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23 | 3 + 2 + 1 + 0 | Tel + Fis + HRes + XrayOR
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24 | 4 + 3 | Cell + XrayOR
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25 | 4 + 3 + 0 | Tel + Cell + XrayOR
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26 | 4 + 3 + 1 | Fis + Cell + XrayOR
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27 | 4 + 3 + 1 + 0 | Tel + Fis + Cell + XrayOR
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28 | 4 + 3 + 2 | HRes + Cell + XrayOR
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29 | 4 + 3 + 2 + 0 | Tel + HRes + Cell + XrayOR
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30 | 4 + 3 + 2 + 1 | Fis + HRes + Cell + XrayOR
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31 | 4 + 3 + 2 + 1 + 0 | Tel + Fis + HRes + Cell + XrayOR
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Many of the combinations here can only be created by random coincidences and are not relevant for the experiment.
The table can continued for jetOFF events with TPATs > 4 and EPATs > 31, but this is omitted here. |
Fri Jun 28 15:44:36 2024, Jan, Accelerator, ESR pattern 
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Attached is the ESR pattern of the experiment.
SC2: one shot injection
SC5: ramp to 40 MeV/u
SC8: ramp to 17 MeV/u
SC10: target ON/ det. IN
SC12: Measurement
SC13: target OFF/ det. OUT
The cycle took about 1.5 minutes without SC12 |
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Tue Jun 25 04:24:55 2024, Bertram, Mathias, Runs, Run 215
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| We use this elog as a substitute as the one from LP2iB is temporarily down.
Run 215 started at 4:28
Peak target density: 3.78e13
Num of injected ions: 1.2e8
Num of cooled & decelerated ions: 5.4e7
Telescope:
HV DE 90 V
Current DE 185 nA
HV E 300 V
Current E 3.645 uA
Peak rate before DT (tpat 0) 3
Peak rate after DT (tpat 0) 3
Fission trigger:
Peak rate before DT (tpat 1) 388
Peak rate after DT (tpat 1) 321
Delay of trig accepted 150ns
Dowscaling y/n? n
Fission bottom:
HV 100 V
Current 1.06 nA
Fission side:
Distance to beam axis 10 mm
HV 150 V
Current 23.77 uA
Fission top:
HV 100 V
Current 1.30 uA
Heavy residue:
Distance to beam axis 15 mm
HV 99.9 V
Current 6.48 uA
Peak rate before DT (tpat 2) 219
Peak rate after DT (tpat 2) 192
Downscaling y/n n
Germanium:
Peak rate before DT (tpat 4) 5732
Peak rate after DT (tpat 4) 4809
Downscaling y/n y (x16) |
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