Bild: ORTEC
Interchangeable HPGe detector module for measurement systems
Self-contained building block for high-resolution gamma spectrometry: a mechanically cooled HPGe detector of standardised crystal dimensions and all spectrometry electronics in a rugged, low-power package. The modules are interchangeable and are intended for integration in larger measurement systems, for example waste assay, aerial survey and continuous air monitoring. Controlled from ORTEC software such as MAESTRO and GammaVision, or from third-party software via ORTEC toolkits.
Download product sheet (PDF)All values with references – for tender documents
Specifications checked against the manufacturer’s documents on 2026-10-17
The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.
| Detector type | P-type coaxial HPGe detector1 |
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| Relative efficiency | >50% typical (ANSI/IEEE 325-1996)1 |
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| Energy resolution at 122 keV | ≤1400 eV FWHM (warranted at optimum settings)1 |
| Energy resolution at 1.33 MeV | ≤2.3 keV FWHM at 1,332 keV (warranted at optimum settings)1 |
| Peak shape FW.1M/FWHM | 1.9 typical (FWTM/FWHM)1 |
| Integral nonlinearity | <±0.025% over the top 99.5% of the spectrum1 |
| Maximum throughput | >100,000 cps with LFR off; with LFR on it may be restricted in software (>34,000 cps); depends on shaping parameters1 |
| Dose-rate range | <0.05 to >10,000 µSv/h; below ~20 µSv/h from the Ge detector spectrum, above that with the internal compensated GM tube1 |
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| Spectrum channels | 512–16,384, software controlled1 |
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| Gain | 0.45–321 |
| Digital filter rise time | 0.8–23 µs in 0.2 µs steps; flat top 0.3–2.4 µs in 0.1 µs steps1 |
| Cooling | Stirling cooler, design life >5 years continuous running, <30 W at operating temperature; all-metal-sealed cryostat without molecular sieve; cool-down typically <15 hours1 |
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| Communication | USB 2.01 |
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| Batteries | Internal rechargeable Li-ion battery pack, 14.4 V nominal; optional external batteries extend operating time1 |
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| Battery life | Approx. 2.5 hours at 25 °C; charging time under 4 hours1 |
| Power supply | 10–17 V DC from battery or DC supply (universal mains supply included); 100 W nominal, 72 W while charging, nominally 30 W cold with fully charged battery1 |
| Detector dimensions | Nominally Ø85 × 30 mm1 |
|---|---|
| Endcap | Aluminium, 0.5 mm1 |
| Dimensions | Max. 41.3 × 34 × 21.2 cm (L × W × H) including Ge detector endcap1 |
| Weight | 17.7 kg (39 lb)1 |
| Operating temperature | −10 to +50 °C (without external enclosure)1 |
|---|---|
| Humidity | 95%, non-condensing1 |
| Maximum shock tolerance | 20 g; an internal accelerometer records the maximum shock1 |
| Included software | MAESTRO1 |
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The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.
The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.
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We help you choose the right configuration, detector and accessories for your measurement task.
ORTEC (AMETEK)