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AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
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AIDA |
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Message ID: 761
Entry time: Sat Nov 3 00:49:22 2018
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Author: |
TD |
Subject: |
Offline analysis R15 - beam background |
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Offline analysis of Oct18/R15_0 to 7
BNC PB-4 pulser OFF, LEC/MEC slow comparator 0x64 (~1MeV)
background (presumably high energy, low Z particles) from beam stopping in F11 E detector upstream
of AIDA and BRIKEN - ~10-15cm Pb shielding installed in BRIKEN to stop heavy opns reaching AIDA
*** ENTRY finish
*** data items: 2088704000 ( 42315.52 Hz)
*** ADC events: 1236420713 ( 25048.92 Hz)
*** time warps: 0 ( 0.00 Hz)
*** DSSSD # 1 count: 12557 old count: 12557 dt: 63395.57 s LEC rate: 0.20 Hz
*** DSSSD # 2 count: 10332 old count: 10332 dt: 63395.57 s LEC rate: 0.16 Hz
*** DSSSD # 3 count: 9644 old count: 9644 dt: 63395.57 s LEC rate: 0.15 Hz
*** DSSSD # 4 count: 10024 old count: 10024 dt: 63395.57 s LEC rate: 0.16 Hz
*** DSSSD # 5 count: 11035 old count: 11035 dt: 63395.57 s LEC rate: 0.17 Hz
*** DSSSD # 6 count: 11684 old count: 11684 dt: 63395.57 s LEC rate: 0.18 Hz
*** DSSSD # 1 count: 0 old count: 0 dt: 63395.57 s HEC rate: 0.00 Hz
*** DSSSD # 2 count: 0 old count: 0 dt: 63395.57 s HEC rate: 0.00 Hz
*** DSSSD # 3 count: 0 old count: 0 dt: 63395.57 s HEC rate: 0.00 Hz
*** DSSSD # 4 count: 0 old count: 0 dt: 63395.57 s HEC rate: 0.00 Hz
*** DSSSD # 5 count: 0 old count: 0 dt: 63395.57 s HEC rate: 0.00 Hz
*** DSSSD # 6 count: 0 old count: 0 dt: 63395.57 s HEC rate: 0.00 Hz
*** ENTRY finish ends
attachment 1 - per DSSSD m_p versus m_n
2 - per DSSSD x versus y
3 - per DSSSD E_p versus E_n
4 - DSSSD hit pattern (ASIC & DSSSD order) LEC & HEC events (note HEC events from ASIC check loads)
5 - DSSSD hit pattern (ASIC & DSSSD order) expanded view of LEC events
DSSSD configuration looks OK. With improved statistics (cf alpha background) some missing
strips identifiable. |
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