ELOG BRIKEN

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

BRIKEN

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Entry time:

Tue Mar 28 06:56:15 2017

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Calibration of new F11 plastic
(see photo)

The new plastic is 1mm thick instead of 0.2mm used last year.
Dimensions:120mm x 100mm x 1mm
HV applied: -1800V
Anode signal connected to Ortec 474 TFA
Gain: 20 x minimum; Int: 200ns; Diff: 100ns; Invert
60 Co source

THIS WAS WRONG! POLARITY OF SIGNALS WAS REVERSED.
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*File: 170328_1507_F11PL_60Co.root
*See attached wrong picture 170328_1507_F11_PL_RandL.pdf (R:Red, L:Black)
*
*Calibration (Gain=20):
*V1C7C3_EFIR (R): Peak(<E>=1.25MeV):2077.1 -> a1=0.0006028 MeV/u
*V1C7C4_EFIR (R): Peak(<E>=1.25MeV):1924.0 -> a1=0.0006507 MeV/u
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CORRECT SPECTRUM:
File: 170328_1838_F11PLCal.root
Picture: 170328_1838_F11PLCal.pdf

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Stopping power calculation (SRIM):
50 MeV/A 40Mg: S=102*1.184=120.8 MeV/mm 
100 MeV/A 40Mg: S=102*0.7129= 72.7 MeV/mm 
(Later: according LISE simulations energy loss of 40Mg  is 88MeV)

What is the energy loss of the "light" particles?

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