A TRANSISTORIZED FAST-SLOW COINCIDENCE AND PULSE AMPLITUDE SELECTING SYSTEM. PART II

Journal Article · Thu Sep 01 04:00:00 EDT 1960 · Nuclear Instr. & Methods

DOI:https://doi.org/10.1016/S0029-554X(60)80025-0· OSTI ID:4133327

Goulding, F S; McNaught, R A

A system developed for fast-slow coincidence experiments in nuclear physics is described, and the design of functional units including a low-level discriminator, single or dual-channel analyzer. coincidence circuit, and linear gate is discussed. The system:s designed to use plus or minus 4 volt double- delay-line shaped pulses produced by a transistorized double-delay-line linear amplifier or equivalent pulses from other amplifiers. Operation with single- phase pulses of similar amplitude is also possible but with reduced performance. Uncertainty of the discriminator threshold and the spurious pedestal and disturbances introduced by the linear gate are <10 mv under all normal operating conditions. Functional units of the system are constructed on printed circuit boards which plug into a base unit where interconcections are made between them through a programming plug. This arrangement allows the experimenter to change irterconnections quickly and makes the whole system extremely versatile. The system also takes advantage of the timing accuracy of the zero crossover of double-delay-line pulses to give a coincidence resolving time of 40 ns while using no fast ampliflers or coincidence circuits. A technique of compensating for baseline shift at high counting rates of single-phase pulses is also described. (auth)

• Research Organization: Atomic Energy of Canada Ltd., Chalk River, Ont.
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-001562
• OSTI ID: 4133327
• Journal Information: Nuclear Instr. & Methods, Journal Name: Nuclear Instr. & Methods Vol. Vol: 8
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AMPLIFIERS
CIRCUITS
COINCIDENCE METHODS
ELECTRONIC EQUIPMENT
ELECTRONICS
ENGINEERING AND EQUIPMENT
PULSE ANALYZERS
PULSES
TRANSISTORS