AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
BRIKEN
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Entry time:
Mon Mar 31 13:22:09 2025
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We investigate the effect on the noise in ORNL tubes of using a differential PA. We connect the tubes in current PA10 (126-140) to one of the new diff PA and connect the output to converter card #4 which is connected to ADC3 (and ADC4). First a short run with 252Cf for setting the right parameters and the calibration file: 161007_1743_252Cf_ORNL_diffPreamp.root Then we make a background run file: 161007_1743_bck_ORNL_diffPreamp.root As can be seen in the figure the effect of the differential preamp is to compress the noise down to 100keV, becoming more similar to the situation of the RIKEN tubes. Thus it will be beneficial to use Diff PA. However as we can only setup one because we have only one spare Diff-Unip converter card, we decided not to use it as the impact will be very low and implies a lot of changes. However one must remember that since we are always going to require coincidence with betas during the measurement this noise should have no effet.
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