ORTEC (AMETEK)
ORTEC
Safeguards planar HPGe-detektor
Planar HPGe gamma detector
- Detector type
- Planar HPGe
- Energy resolution at 122 keV
- Warranted FWHM for SGD-16550P4: 550 eV at 1 kcps, 6 μs; 615 eV at 50 kcps, 1 μs
7 models
Bild: ORTEC
GEM HPGe-detektorer
HPGe detectors for gamma spectroscopy
P-type coaxial germanium detectors for laboratory measurements from approximately 40 keV and above. Select a configuration for the sample geometry and measurement task.
- Energy range
- Approximately 40 keV and above1
- Relative efficiency
- 10–150% across the model series; higher on request2
- Energy resolution at 122 keV
- FWHM maximum limits 0.80–1.30 keV for GEM10–GEM150; model-dependent2
Download product sheet (PDF)All values with references – for tender documents
Specifications checked against the manufacturer’s documents on 2026-10-16
Overview
Key features
- Relative efficiency up to 150%, higher on request.
- PopTop, Streamline and mechanical cooling configurations.
- SMART-1 bias and carbon fibre endcaps are available as options.
Specifications
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
| Detector type | P-type coaxial HPGe1 |
|---|
Performance
| Relative efficiency | 10–150% across the model series; higher on request2 |
|---|---|
| Energy resolution at 122 keV | FWHM maximum limits 0.80–1.30 keV for GEM10–GEM150; model-dependent2 |
| Energy resolution at 1.33 MeV | FWHM maximum limits 1.7–2.3 keV for GEM10–GEM150; model-dependent2 |
| Resolution measurement conditions | Total system resolution measured at the factory per ANSI/IEEE Std 325-1996, at optimal shaping time with an ORTEC DSPEC-50A2 |
Measuring range
| Energy range | Approximately 40 keV and above1 |
|---|
Electronics & signal
| Preamplifier | Optional PLUS for high count rates1 |
|---|
Cooling
| Cooling | LN₂ or compatible mechanical cooling, by configuration1 |
|---|
Mechanical
| Endcap | Low-background carbon fibre option1 |
|---|
Ordering & accessories
| Cryostat configurations | PopTop or Streamline1 |
|---|---|
| Bias control | SMART-1 (-SMP), optional1 |
| Cooling and accessories | Cryostat and dewar or other cooling device required for operation and not included with the detector; a cryostat must be ordered with a Streamline detector2 |
The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.
Models
17 models in the series. Filter or scroll the table to compare.
17 / 17
| Model | Relative efficiency2 | Energy resolution at 122 keV2 | Energy resolution at 1.33 MeV2 | Peak-to-Compton ratio2 | Peak shape FW.1M/FWHM2 | Peak shape FW.02M/FWHM2 | Endcap diameter2 | Ordering configurations2 |
|---|---|---|---|---|---|---|---|---|
| GEM10 | 10 % (minimum) | ≤ 0.80 keV FWHM | ≤ 1.7 keV FWHM | ≥ 41:1 | 1.9 (maximum) | 2.6 (typical) | 70 mm (nominal) | GEM10P4-70 (PopTop) / GEM10-70 (Streamline) |
| GEM15 | 15 % (minimum) | ≤ 0.82 keV FWHM | ≤ 1.8 keV FWHM | ≥ 46:1 | 1.9 (maximum) | 2.6 (typical) | 70 mm (nominal) | GEM15P4-70 (PopTop) / GEM15-70 (Streamline) |
| GEM20 | 20 % (minimum) | ≤ 0.82 keV FWHM | ≤ 1.8 keV FWHM | ≥ 52:1 | 1.9 (maximum) | 2.6 (typical) | 70 mm (nominal) | GEM20P4-70 (PopTop) / GEM20-70 (Streamline) |
| GEM25 | 25 % (minimum) | ≤ 0.82 keV FWHM | ≤ 1.8 keV FWHM | ≥ 56:1 | 1.9 (maximum) | 2.6 (typical) | 76 mm (nominal) | GEM25P4-76 (PopTop) / GEM25-76 (Streamline) |
| GEM30 | 30 % (minimum) | ≤ 0.85 keV FWHM | ≤ 1.8 keV FWHM | ≥ 60:1 | 1.9 (maximum) | 2.6 (typical) | 76 mm (nominal) | GEM30P4-76 (PopTop) / GEM30-76 (Streamline) |
| GEM40 | 40 % (minimum) | ≤ 0.87 keV FWHM | ≤ 1.8 keV FWHM | ≥ 64:1 | 1.9 (maximum) | 2.6 (typical) | 76 mm (nominal) | GEM40P4-76 (PopTop) / GEM40-76 (Streamline) |
| GEM50 | 50 % (minimum) | ≤ 0.90 keV FWHM | ≤ 1.9 keV FWHM | ≥ 66:1 | 1.9 (maximum) | 2.6 (typical) | 83 mm (nominal) | GEM50P4-83 (PopTop) / GEM50-83 (Streamline) |
| GEM60 | 60 % (minimum) | ≤ 1.00 keV FWHM | ≤ 1.9 keV FWHM | ≥ 70:1 | 1.9 (maximum) | 3.0 (typical) | 95 mm (nominal) | GEM60P4-95 (PopTop) / GEM60-95 (Streamline) |
| GEM70 | 70 % (minimum) | ≤ 1.00 keV FWHM | ≤ 2.0 keV FWHM | ≥ 75:1 | 2.0 (maximum) | 3.0 (typical) | 95 mm (nominal) | GEM70P4-95 (PopTop) / GEM70-95 (Streamline) |
| GEM80 | 80 % (minimum) | ≤ 1.10 keV FWHM | ≤ 2.0 keV FWHM | ≥ 77:1 | 2.0 (maximum) | 3.0 (typical) | 95 mm (nominal) | GEM80P4-95 (PopTop) / GEM80-95 (Streamline) |
| GEM90 | 90 % (minimum) | ≤ 1.20 keV FWHM | ≤ 2.0 keV FWHM | ≥ 80:1 | 2.0 (maximum) | 3.0 (typical) | 95 mm (nominal) | GEM90P4-95 (PopTop) / GEM90-95 (Streamline) |
| GEM100 | 100 % (minimum) | ≤ 1.20 keV FWHM | ≤ 2.1 keV FWHM | ≥ 83:1 | 2.0 (maximum) | 3.0 (typical) | 95 mm (nominal) | GEM100P4-95 (PopTop) / GEM100-95 (Streamline) |
| GEM110 | 110 % (minimum) | ≤ 1.30 keV FWHM | ≤ 2.1 keV FWHM | ≥ 85:1 | 2.0 (maximum) | 3.0 (typical) | 95 mm (nominal) | GEM110P4-95 (PopTop) / GEM110-95 (Streamline) |
| GEM120 | 120 % (minimum) | ≤ 1.30 keV FWHM | ≤ 2.1 keV FWHM | ≥ 86:1 | 2.0 (maximum) | 3.1 (typical) | 108 mm (nominal) | GEM120P4-108 (PopTop) / GEM120-108 (Streamline) |
| GEM130 | 130 % (minimum) | ≤ 1.30 keV FWHM | ≤ 2.1 keV FWHM | ≥ 90:1 | 2.0 (maximum) | 3.1 (typical) | 108 mm (nominal) | GEM130P4-108 (PopTop) / GEM130-108 (Streamline) |
| GEM140 | 140 % (minimum) | ≤ 1.30 keV FWHM | ≤ 2.2 keV FWHM | ≥ 90:1 | 2.0 (maximum) | 3.1 (typical) | 108 mm (nominal) | GEM140P4-108 (PopTop) / GEM140-108 (Streamline) |
| GEM150 | 150 % (minimum) | ≤ 1.30 keV FWHM | ≤ 2.3 keV FWHM | ≥ 90:1 | 2.0 (maximum) | 3.1 (typical) | 108 mm (nominal) | GEM150P4-108 (PopTop) / GEM150-108 (Streamline) |
Documents
Sources
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.
- 1
- 2
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Oscar ÅgerstamFounder & CEO