A Fast-Slow Coincidence System Employing a Multichannel Time Display

Journal Article · Wed Jan 01 04:00:00 EST 1964 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/TNS.1964.4323383· OSTI ID:4014518

Tomlinson, R. B.; Brown, R. L.

A versatile, solid-sthte fast-slow coincidence system is described which is used with large NaI(Tl) scintfilators amd XP1040 photomultipliers. A multichannel time display is provided, which consists of a time-to-amplitude converter of the start-stop'' type and a standard 100channel kicksorter. The calibration of the time analyzer can be varied from 1 to 0.1 nsec per channel. In addition to showing the time spread, the display indicates the coincidence resolving time which is variable from 1 to 100 nsec by means of front panel helipots. The electronic time jitter of the system, as measured with a fast pulser is less than 0.2 nsec. A resolving time of 8 nsec gives 95% coincidence efficiency for coincidences between the annihilation radiation photopeaks from ²²Na.

• Research Organization: Atomic Energy of Canada Ltd., Chalk River, Ont.
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-020345
• OSTI ID: 4014518
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 2 Vol. 11; ISSN 0018-9499
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ANNIHILATION
COINCIDENCE METHODS
CRYSTAL COUNTERS
DIGITAL SYSTEMS
MEASURED VALUES
PHOTOELECTRIC EFFECT
PHOTOMULTIPLIERS
PULSE ANALYZERS
SCINTILLATION COUNTERS
SODIUM 22
SODIUM IODIDES
THALLIUM
TIME ANALYZERS