Nanogate- a nanosecond gated image intensifier with high gain and high resolution

Conference · Wed Feb 01 04:00:00 EST 1984 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:7100222

Pfeiffer, W; Wittmar, D

The investigation of luminous phenomena with two-dimensional resolution in space and resolution in time requires electro-optical devices which can be gated for very short time intervals. Image intensifiers are presently mainly used for this purpose. They are available either as image intensifiers with microchannel plates or as image intensifier diodes. Due to secondary electron multiplication, microchannel plate intensifiers have high gain; if image intensifier diodes are used, up to three diodes must be cascaded to attain a comparably high gain. This paper presents an image intensifier cascade consisting of three image intensifier diodes which are coupled by fiber optics. The first image intensifier is used as an electro-optical high-speed shutter. Since the entire supply voltage of 9 KeV has to be pulsed, a diode with an electrode spacing of only 1.5 mm is used; the gain for this voltage is about 50. The two cascaded image intensifiers have an electrode spacing of 2.5 mm and a supply voltage of 15 KeV each and are used for the light amplification of the output of the first intensifier. This amplification is about 3,500. The third intensifier has a quartz glass input window which provides useful sensitivity in a spectral range of about 180 to 900 nm. A transistorized high voltage pulse generator, developed according to the Marx cascade and coupled to the intensifier, is described. The advantages and disadvantages of such a cascade compared to a microchannel plate intensifier are discussed.

• Research Organization: Technische Hochschule Darmstadt, Schlossgraben I, D-6100 Darmstadt
• OSTI ID: 7100222
• Report Number(s): CONF-831015-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: 31:1
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AMPLIFICATION
CHALCOGENIDES
COMPARATIVE EVALUATIONS
ELECTRIC DISCHARGES
ELECTRO-OPTICAL EFFECTS
ELECTRODES
ELECTRON MULTIPLIERS
ELECTRON TUBES
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ENERGY RANGE
EQUIPMENT
FIBERS
FUNCTION GENERATORS
GAIN
GATING CIRCUITS
IMAGE INTENSIFIERS
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
MICROCHANNEL ELECTRON MULTIPLIERS
MINERALS
OPTICAL FIBERS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PULSE GENERATORS
QUARTZ
RESOLUTION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SILICON COMPOUNDS
SILICON OXIDES
SPATIAL RESOLUTION
TIME RESOLUTION
TIMING PROPERTIES
TRANSISTORS