Wire chamber radiation detector with discharge control

Patent · Sun Jan 01 00:00:00 EST 1984

OSTI ID:865132

Perez-Mendez, Victor ^[1]; Mulera, Terrence A ^[1]

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1. Berkeley, CA

A wire chamber radiation detector (11) has spaced apart parallel electrodes (16) and grids (17, 18, 19) defining an ignition region (21) in which charged particles (12) or other ionizing radiations initiate brief localized avalanche discharges (93) and defining an adjacent memory region (22) in which sustained glow discharges (94) are initiated by the primary discharges (93). Conductors (29, 32) of the grids (18, 19) at each side of the memory section (22) extend in orthogonal directions enabling readout of the X-Y coordinates of locations at which charged particles (12) were detected by sequentially transmitting pulses to the conductors (29) of one grid (18) while detecting transmissions of the pulses to the orthogonal conductors (36) of the other grid (19) through glow discharges (94). One of the grids (19) bounding the memory region (22) is defined by an array of conductive elements (32) each of which is connected to the associated readout conductor (36) through a separate resistance (37). The wire chamber (11) avoids ambiguities and imprecisions in the readout of coordinates when large numbers of simultaneous or near simultaneous charged particles (12) have been detected. Down time between detection periods and the generation of radio frequency noise are also reduced.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4465933
• OSTI ID: 865132
• Country of Publication: United States
• Language: English

Related Subjects

wire
chamber
radiation
detector
discharge
control
11
spaced
apart
parallel
electrodes
16
grids
17
18
19
defining
ignition
region
21
charged
particles
12
ionizing
radiations
initiate
brief
localized
avalanche
discharges
93
adjacent
memory
22
sustained
glow
94
initiated
primary
conductors
29
32
section
extend
orthogonal
directions
enabling
readout
x-y
coordinates
locations
detected
sequentially
transmitting
pulses
grid
detecting
transmissions
36
bounding
defined
array
conductive
elements
connected
associated
conductor
separate
resistance
37
avoids
ambiguities
imprecisions
simultaneous
near
time
detection
periods
generation
radio
frequency
noise
reduced
wire chamber
radio frequency
charged particles
spaced apart
glow discharge
charged particle
radiation detector
ionizing radiation
orthogonal directions
parallel electrodes
frequency noise
conductive elements
ignition region
avalanche discharge
chamber radiation
orthogonal direction
parallel electrode
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