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Optical Engineering

Man - Machine Collaboration in the Analysis of Bubble Chamber Photography for High - Energy Physics
Author(s): Paul V. C. Hough
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Paper Abstract

A high-resolution, high-precision mechanical flying spot digitizer (FSD) operating on-line to an IBM 7094 computer makes available to the computer some 20,000-50,000 coordinate pairs describing a bubble chamber picture in a time of a few seconds. The computer is guided by humans in its selection of relevant data -- normally by a few rough coordinates recorded in punched cards during a pre-scan, but also by a manual over-ride at the 7094 console in the event of failure in recognition at the time of precision measurement. The system is capable of transition to purely machine recognition as computer programs acquire sufficient subtlety and reliability. The Mark II FSD at Brook-haven is capable of 10 micron resolution and 1-2 micron accuracy over a 2" x 6" area of the photographic negative. Completed systems at Brookhaven and at the University of California in Berkeley are each processing strange-particle events at about the rate of 10 conventional measuring machines, with a further expansion in rate by about an order of magnitude envisioned. Similar systems are under construction at eight other laboratories in the United States and Eurone.

Paper Details

Date Published: 1 March 1964
PDF: 4 pages
Opt. Eng. 2(3) 020379 doi: 10.1117/12.7971269
Published in: Optical Engineering Volume 2, Issue 3
Show Author Affiliations
Paul V. C. Hough, Brookhaven National Laboratory (United States)

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