A Portable Scaler

Journal Article · Tue Mar 01 04:00:00 EST 1966 · Health Physics (England)

DOI:https://doi.org/10.1097/00004032-196603000-00012· OSTI ID:4563060

Thorngate, J. H.; Parks, J. E.

A versatile, battery-operated, transistorized scaler was built for measurements in the field. It has a count capacity of 10⁸-1 counts from three transistorized decades and a mechanical register. The scaler has a double pulse resolving time of 7 µsec but is limited to 3 x 10³ counts per second by the mechanical register. Positive and negative input pulses greater than 10 millivolts can be counted, and a test signal is available for checking the circuits. Pulses up to 25 volts can be tolerated without damaging the input circuits. Timed runs from 10 seconds to 10 minutes are possible using a built-in timer which is reproducible to better than 0.5%. A regulated high voltage supply is included which is variable from 200 to 1500 volts with sufficient current to operate a high resistance photo-multiplier tube dynode voltage divider. A special input is provided for use with halogen-quenched geiger tubes. The rechargeable battery will operate the scaler for 20 hrs between charges, and a charger is included. The unit is 6 in. high by 9 in. long by 5 in. deep and weighs 10 lbs.

• Research Organization: Oak Ridge National Lab., TN
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• Contributing Organization: Dept. of Physics, Berea College, Berea, KY
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-20-016846
• OSTI ID: 4563060
• Report Number(s): ORNL-P-1186; PubMed 5916799
• Journal Information: Health Physics (England), Journal Name: Health Physics (England) Journal Issue: 3 Vol. 12; ISSN HLTPAO; ISSN 0017-9078
• Country of Publication: United States
• Language: English

Related Subjects

CONFIGURATION
EFFICIENCY
INSTRUMENTATION
MOTION
PLANNING
Radiation Detection
SCALERS
TRANSISTORS
WEIGHT