ELOG AIDA

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

AIDA

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Entry time:	Sat Mar 29 11:35:32 2025
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BNC PB-4 - see attachment 1 Amplitude 35,000 Attenuators all OUT Risetime 50ns Decay time 1ms Tail pulse Polarity + Frequency 2Hz (min) Delay min DSO ch#1 DC/1M - y: 5mV/div x: 100ns, 200ns, 1us, 2us & 10us/div - attachments 2-6 BNC PB-5 - see attachment 7-9 Amplitude 1.0V Attenuation x1 Decay time 1ms Tail pulse Polarity + Frequency 2Hz (min) Delay 250ns (min) DSO ch#1 DC/1M - y: 5mV/div x: 100ns, 200ns, 1us, 2us & 10us/div - attachments 10-14 BNC PB-5 - see attachment 15-16 Amplitude 10.0V Attenuation x10 Decay time 1ms Tail pulse Polarity + Frequency 2Hz (min) Delay 250ns (min) DSO ch#1 DC/1M - y: 5mV/div x: 100ns, 200ns, 1us, 2us & 10us/div - attachments 17-21 Conclusion BNC PB-5 significantly noisier than BNC PB-4. Results consistent with GSI tests https://elog.ph.ed.ac.uk/AIDA/886 , i.e. AIDA BNC PB-5 pulser at GSI not faulty. BNC PB-5 operation with 10.0V/10x ( cf. 1.0V/x1 ) shows lower level of noise but still worse than BNC PB-4. 5mV transient at test input ( C_t = 0.7pF ) = 3.5fC = 80keV Si equivalent ( check 1V x 0.7pF = 0.7pC = 16MeV OK ). Encoding: HTML ELCode plain Suppress Email notification

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