US4179608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Right/left assignment in drift chambers and proportional multiwire chambers (PWC's) using induced signals
Assignee: United States Department of Energy
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Filing: 1978-05-10
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Granted: 1979-12-18
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Expires: 1998-05-10
Abstract
Abstract Improved multiwire chamber having means for resolving the left/right ambiguity in the location of an ionizing event. The chamber includes a plurality of spaced parallel anode wires positioned between spaced planar cathodes. Associated with each of the anode wires are a pair of localizing wires, one positioned on either side of the anode wire. The localizing wires are connected to a differential amplifier whose output polarity is determined by whether the ionizing event occurs to the right or left of the anode wire.
Inventors
- 👤 Albert H. Walenta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/06; H01J47/062
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
An improved multiwire chamber for the detection and localization of ionizing radiation and having a plurality of anode wires wherein the improvement comprises: (a) a pair of localizing wires spaced from substantially parallel to and coextensive with one of said anode wires, one wire of said pair being positioned on either side of said anode wire; and, (b) means for determining the difference in signal between the wires of said pair caused by an ionizing event, whereby the ambiguity as to whether said event occurred to the right or left of said anode wire may be resolved.
Claim 2
Dependent Claim
97 words
An improved multiwire chamber for the detection and localization of ionizing radiation and having a plurality of anode wires wherein the improvement comprises: (a) a pair of localizing wires spaced from substantially parallel to and coextensive with one of said anode wires, one wire of said pair being positioned on either side of said anode wire; and, (b) means for determining the difference in signal between the wires of said pair caused by an ionizing event, whereby the ambiguity as to whether said event occurred to the right or left of said anode wire may be resolved.
Claim 3
Dependent Claim
36 words
A multiwire chamber as described in claim 1 wherein said chamber is a drift chamber having field shaping electrodes and wherein a pair of said field shaping electrodes also function as said pair of localizing wires.
Claim 4
Dependent Claim
32 words
A multiwire chamber is described in claim 1 wherein a plurality of said localizing wires divides said chamber into a plurality of congruent cells, each centered on one of said anode wires.
Claim 5
Dependent Claim
29 words
A multiwire chamber as described in claim 3 wherein said chamber is a drift chamber having potential wires and wherein said potential wires also function as said localizing wires.
Claim 6
Dependent Claim
32 words
A multiwire chamber as described in claim 3 wherein said chamber is a multiwire proportional chamber having relatively closely spaced anode wires and wherein said anode wires function as said localizing wires.
Claim 7
Dependent Claim
29 words
A multiwire chamber as described in claim 3 wherein said chamber is a drift chamber having only anode wires and wherein said anode wires function as said localizing wires.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |