Scintillation Detector of 4-m² Area and Transistorized Amplifier with Logarithmic Response

Journal Article · Wed Nov 01 04:00:00 EST 1961 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1717203· OSTI ID:4786566

Suga, Koichi; Clark, George; Escobar, Ismael

A scintillation detector with an area of 4 m² and a transistorized amplifier with a logarithmic height-totime converter are described. The detector employs tapered sheets of plastic scintillator and a single 16-in. phototmultiplier mounted in a pyramidal can, coated inside with a commercial 90% reflecting white paint. The response is uniform to within 5% over the entire sensitive surface. A traversal by one relativistic charged particle (energy loss ~ 10 Mev) generates approximately 20 photoelectrons in the photomultiplier. The amplifier and converter yield a rectangular pulse whose duration is accurately proportional to the logarithm of the input pulse amplitude over a range of four decades. The gain is constant to 1 db from 10 to 45 deg C, and the equivalent noise input is 200 mu v. (auth)

• Research Organization: Massachusetts Inst. of Tech., Cambridge
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-013338
• OSTI ID: 4786566
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 11 Vol. 32; ISSN 0034-6748; ISSN RSINAK
• Publisher: American Institute of Physics (AIP)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AMPLIFIERS
CHARGED PARTICLES
ENGINEERING AND EQUIPMENT
PHOTOMULTIPLIERS
SCINTILLATION COUNTERS
SENSITIVITY
SURFACES
TEMPERATURE
TRANSISTORS