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Single Point Extended Area Radiation Detector

These detectors are available off-the-shelf.

Description

The eV PRODUCTS SPEAR (Single Point Extended Area Radiation) detector is a complete probe, comprising a 5x5x5mm3 CdZnTe detector crystal and low noise hybrid preamplifier in a housing measuring only 13mm diameter x 84mm in length. The probe is supplied complete with a 2 meter long connecting input/output cable, allowing the unit to be used immediately upon receipt.

Applications:

Gamma-ray Spectroscopy
Health Physics
Medical Diagnostics
Site Monitoring
X-ray Fluorescence
Position Sensing
X-ray Diffraction
Dosimeters
Industrial Gauging
Astronomy

Advantages:

Small Size
Excellent Energy Resolution
High Charge Collection Efficiency
High Photo Peak Efficiency
Low tailing and high peak-to-valley ratios
Room-temperature operation
High Speed Detection
Robust
Non Hygroscopic

Specifications

CdZnTe Detector Dimensions
5x5x5mm» with CAPture® contacts

Measurement Capabilities
Energy Range: 10 to 670keV
Energy Resolution: < 4% FWHM @ 122 KeV @ 25º C
(contact eV for exact value depending on the application specifics)

Operating Temperature
Range: - 30º to 50º C Standard

SPEAR Dimensions
12mm diameter x 89mm length

Housing Finish
Anodized Gold comes standard. (A wide range
available. Contact eV for information)

SPEAR Detector Input Requirements
9 PIN Sub D connector: +12VDC, ground
SHV connector: HV bias (typically +500 to +1000VDC)

Signal Output
BNC connector
As assembled, all Input/Output connectors will interface directly
with any standard spectroscopy or counting system.

SPEAR Performance
+ 7 to 12 VDC Operation
Input Capacitance: 6.6pF
Risetime @ C source: 1pF- 35nS
Falltime @ C source: 1 pF - 725uS
Noise @ C source: 0pF - ~160 e¯ (Si)
Sensitivity: 3.2 mV/fCoul
Power dissipation : 130 mW
(+ 12 VDC supply)