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CAMBER M2R1_03, FEB13, channel 15 working with CAEN HV system SY2527. σ = 1.73. σ = 2.01. CAEN OFF HV cable plugged to the chamber. CAEN OFF, HV cable unplugged from the chamber. σ = 4.90. σ = 21.1. Enormous. Enormous. CAEN ON, HV off. CAEN ON, HV=0V,
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CAMBER M2R1_03, FEB13, channel 15 working with CAEN HV system SY2527 σ= 1.73 σ= 2.01 CAEN OFF HV cable plugged to the chamber CAEN OFF, HV cable unplugged from the chamber σ= 4.90 σ= 21.1 Enormous Enormous CAEN ON, HV off CAEN ON, HV=0V, No steel shielding on top of the CAEN
CAMBER M2R1_03, FEB13, channel 15 working with UF/PNPI HV system σ= 1.73 σ= 2.01 MATSUSADA OFF, HV cable unplugged from the chamber MATSUSADA OFF, HV cable plugged to the chamber σ= 2.01 σ= 2.01 MATSUSADA On, HV on, 0V MATSUSADA On, HV on, 2500V
CHAMBER M2R1_03, FEB13, channel 15 working with UF/PNPI HV system σ= 6.37 Enormous MATSUSADA On, HV on, 2500V In addition: CAEN power ON, Conclusion: CAEN SY2527 (if ON) is a source of strong magnetic field. This field penetrates inside chamber and pickup noise voltage on the wire strips which have rather high impedance (100k//Cstrip), especially in M2M3R1.