Check of calibrations and rates for neutron detectors with Conf File 161107Conf_BrikenFull.xlsx

Measurement 161122_2208_003.root has been used to check the calibrations and counting rates in the BRIKEN
detector. Condition of the measurement:
252Cf at 22.5cm from moderator, opposite sede from AIDA

RESULTS

Calibrations factors:
Calibrations of the neutron detectors are reasonable in the current conditions. A check detector by detector
(see attached file) shows that the full peak for most of the counters is around 764keV. Only 3 counters are
shifted more than 10keV:
He134	741.901
He135	750.312
He140	748.587	

The impact on the counting rates would not be serious.

Counting rates (n/pulser):
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Total neutron rate:	1516.28
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	BY RING:
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R1	359.057
R2	222.997
R3	386.299
R4	253.833
R5	143.434
R6	90.6357
R7	60.025

The total current counting rate is lower than rate obtained in Oct 12th (total 1550.91 n/pulser). The difference
is due mainly to a decrease in the counting rates for rings 1 to 4.