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US3603797A
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Two-dimensional position-sensitive radiation detector
Assignee: United States Atomic Energy Commission
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Filing: 1970-03-10
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Granted: 1971-09-07
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Expires: 1990-03-10
Abstract
Abstract A two-dimensional position-sensitive detector has been provided to measure the coordinates of the location and the energy loss of charged particles and ionizing radiation. The device comprises an ordered array of high resistance collector wires strung in parallel. Adjacent wires are interconnected at both ends by a series of resistors so as to form a four output terminal network. A comparison of the rise times of the output pulses from these four terminals gives the coordinates of an ionizing event within the sensitive area of the detector. The amplitude of the sum of the four output pulses gives the energy loss of the event in the detector gas.
Inventors
- 👤 Casimer J Borkowski Manfr Kopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:59
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
274 words
A two-dimensional position -sensitive radiation detector, comprising: an ionizable gas-filled counter envelope; a plurality of elongated high resistive collector wires disposed within said gas-filled envelop in an ordered array; a plurality of resistors connected respectively between both the adjacent ends of each of said collector wires, thereby forming four output terminals; a first summing network having an output equal to the sum of the inputs thereto having its inputs connected between first and second terminals of said four output terminals; a second summing network having an output equal to the sum of the inputs thereto having its inputs connected between said third and fourth terminals of said four output terminals; a first pulse detector means connected between said outputs of said first and second summing networks and responsive to the rise time of said output pulses from said first and second summing networks for providing a pulse which is indicative of the position of an ionizing event along said collector wires; a third summing network having an output equal to the sum of the inputs applied thereto having its inputs connected between said first and third output terminals of said four output terminals; a fourth summing network having an output equal to the sum of the inputs applied thereto having its inputs connected between said second and fourth terminals of said four outputs terminals; and a second pulse detector means connected between the outputs of said third and fourth summing netwOrks and responsive to the rise time of said output pulses from said third and fourth summing networks for providing a pulse which is indicative of the position of said event between said wires.
Claim 2
Dependent Claim
274 words
A two-dimensional position -sensitive radiation detector, comprising: an ionizable gas-filled counter envelope; a plurality of elongated high resistive collector wires disposed within said gas-filled envelop in an ordered array; a plurality of resistors connected respectively between both the adjacent ends of each of said collector wires, thereby forming four output terminals; a first summing network having an output equal to the sum of the inputs thereto having its inputs connected between first and second terminals of said four output terminals; a second summing network having an output equal to the sum of the inputs thereto having its inputs connected between said third and fourth terminals of said four output terminals; a first pulse detector means connected between said outputs of said first and second summing networks and responsive to the rise time of said output pulses from said first and second summing networks for providing a pulse which is indicative of the position of an ionizing event along said collector wires; a third summing network having an output equal to the sum of the inputs applied thereto having its inputs connected between said first and third output terminals of said four output terminals; a fourth summing network having an output equal to the sum of the inputs applied thereto having its inputs connected between said second and fourth terminals of said four outputs terminals; and a second pulse detector means connected between the outputs of said third and fourth summing netwOrks and responsive to the rise time of said output pulses from said third and fourth summing networks for providing a pulse which is indicative of the position of said event between said wires.
Claim 3
Dependent Claim
33 words
A two dimensional position-sensitive detector as set forth in claim 1 further including first, second, third and fourth pulse amplifiers connected in series with said first, second, third and fourth output terminals, respectively.
Claim 4
Dependent Claim
47 words
A two dimensional position-sensitive detector as set forth in claim 2 wherein said counter enclosure includes a pair of parallel spaced-apart electric field producing plates and said plurality of highly resistive collector wires are disposed in a parallel array intermediate the spacing between said parallel field plates.
Claim 5
Dependent Claim
125 words
A two dimensional position-sensitive detector as set forth in claim 3 wherein each of said first and second pulse detector means includes first and second timing channels connected to respective outputs of said summing networks, each of said timing channels providing an output pulse at a time dependent upon the rise time of the input pulse applied thereto from said summing networks, a variable delay line connected in series with the output of said second timing channel for orienting the outputs of said timing channels as to the position of an event detected by said counter, and a time-to-amplitude converter having a ''''start'''' input connected to the output of said first timing channel and a ''''stop'''' input connected to the output of said delay line.
Claim 6
Dependent Claim
93 words
A two dimensional position-sensitive detector as set forth in claim 4 wherein each of said timing channels includes a bipolar pulse shaper connected to the respective summing network output, said bipolar pulse shaper having an output pulse which crosses the zero-base voltage line at a time dependent upon the rise time of the pulse applied thereto, and a crossover detector connected to the output of said bipolar pulse shaper which produces an output pulse at a time coincident with the zero level crossover time of said bipolar pulse applied to the input thereof.
Claim 7
Dependent Claim
53 words
A two dimensional position-sensitive detector as set forth in claim 5 wherein said counter is of the gas flow-through type and said counter envelope includes a gas supply manifold for supplying said ionizable gas to said counter envelope and an exhaust port through which said gas is allowed to escape from said envelope.
Claim 8
Dependent Claim
26 words
A two dimensional position-sensitive detector as set forth in claim 6 wherein said field plates and said collector wires are disposed in a plane parallel array.
Claim 9
Dependent Claim
29 words
A two dimensional position-sensitive detector as set forth in claim 7 wherein said four output terminals are taken at the four corners of said plane parallel collector wire array.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |