AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40
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Message ID: 761     Entry time: Sat Nov 3 00:49:22 2018
Author: TD 
Subject: Offline analysis R15 - beam background 
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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