Customized Detector
Custom Scintillation Detector Assemblies for Radiation Measurement
Customized Detector assemblies combine scintillation materials, optical coupling, PMTs or other sensors, hermetic housings and optional electronics into application-specific radiation detection modules. They are used when a standard detector size, sensor configuration or mechanical package does not match the instrument requirement.
ATR Crystal can review detector assemblies based on NaI(Tl), LaBr3(Ce), CsI(Na), BGO and plastic scintillators. Material selection depends on energy resolution, detection efficiency, timing, count rate, gamma energy range, operating environment, cost target and mechanical constraints.
Custom design options include scintillator size, PMT diameter, optical window, housing material, flange, connector, cable, collimator, shielding interface, electronics support and calibration requirement. Standard detector models are also available as references for faster specification.
Applications of Scintillation Detector Assemblies
Gamma-ray spectroscopy and isotope identification
Radioimmunoassay and laboratory counting systems
Aerial survey and environmental radiation monitoring
Whole-body counting and contamination monitoring
Security portal monitoring and alarm instruments
Nuclear medicine, high-energy physics and research detectors
Advantages of Custom Detector Assemblies
- Application-matched materialNaI(Tl), LaBr3(Ce), CsI(Na), BGO and plastic scintillators can be selected according to resolution, efficiency, timing and cost.
- Matched sensor readoutCrystal size and emission wavelength can be matched with PMTs, SiPMs or photodiodes where appropriate.
- Custom mechanical packageHousing material, flange, connector, window, mounting and cable options can be reviewed by drawing.
- Hermetic encapsulation supportHygroscopic scintillators such as NaI(Tl), LaBr3(Ce) and CsI(Na) can be sealed in suitable detector housings.
- Standard models availableExisting NaI(Tl), LaBr3(Ce), BGO and CsI(Na) detector formats can be used as starting points for custom orders.
- Prototype to production reviewPrototype detector requirements and recurring production specifications can be reviewed separately.
Standard Scintillation Detector Assemblies
The following models are original standard detector references. Final performance depends on scintillator grade, PMT model, electronics and acceptance test conditions.
| Model | Scintillator | Photomultiplier Tube | PHR at Cs-137 |
|---|---|---|---|
| NAI1/1P1.5 | Dia. 1 in x 1 in NaI(Tl) | Dia. 1.5 in | <=8.5% at 662 keV |
| NAI1.5/1P2 | Dia. 1.5 in x 1 in NaI(Tl) | Dia. 2 in | <=8.5% at 662 keV |
| NAI2/2P2 | Dia. 2 in x 2 in NaI(Tl) | Dia. 2 in, 8-stage | <=7.5% at 662 keV |
| NAI2.5/2.5P3 | Dia. 2.5 in x 2.5 in NaI(Tl) | Dia. 3 in | <=7.5% at 662 keV |
| NAI3/3P3 | Dia. 3 in x 3 in NaI(Tl) | Dia. 3 in, 10-stage | <=7.5% at 662 keV |
| NAI4/4P5 | Dia. 4 in x 4 in NaI(Tl) | Dia. 5 in | <=8.5% at 662 keV |
| LB1.5/1.5P2 | Dia. 1.5 in x 1.5 in LaBr3(Ce) | Dia. 2 in, 8-stage | <3.5% or <3.0% at 662 keV |
| LB2/2P3 | Dia. 2 in x 2 in LaBr3(Ce) | Dia. 3 in, 8-stage | <3.5% or <3.0% at 662 keV |
| LB3/3P3.5 | Dia. 3 in x 3 in LaBr3(Ce) | Dia. 3.5 in, 8-stage | <3.5% or <3.0% at 662 keV |
| BGO1/1P1.5 | Dia. 1 in x 1 in BGO | Dia. 1.5 in | <15% at 662 keV |
| BGO1.5/1.5P2 | Dia. 1.5 in x 1.5 in BGO | Dia. 2 in | <15% at 662 keV |
| BGO2/2P2 | Dia. 2 in x 2 in BGO | Dia. 2 in | <15% at 662 keV |
| CsI1/1P1.5 | Dia. 1 in x 1 in CsI(Na) | Dia. 1.5 in | <=7.5% at 662 keV |
| CsI2/2P2 | Dia. 2 in x 2 in CsI(Na) | Dia. 2 in | <=7.5% at 662 keV |
| CsI3/3P3 | Dia. 3 in x 3 in CsI(Na) | Dia. 3 in | <=7.5% at 662 keV |
Detector Material Selection Guide
| Material | Main Advantage | Common Fit | Design Notes |
|---|---|---|---|
| NaI(Tl) | High light output and mature gamma spectroscopy use | Survey meters, spectroscopy, counting systems | Hygroscopic; requires reliable encapsulation. |
| LaBr3(Ce) | Better energy resolution and faster timing than NaI(Tl) | Isotope identification and high-count-rate gamma systems | Hygroscopic and has intrinsic background from La-138. |
| BGO | High density and strong stopping power | Compact high-energy gamma detection | Lower light output and poorer energy resolution than NaI(Tl). |
| CsI(Na) | Good PMT match and high light yield | Gamma detection and customized detector modules | Hygroscopic; encapsulation should be reviewed. |
| Plastic scintillator | Large-area, fast and lightweight detection | Portal monitoring, beta detection and area counters | Lower gamma stopping power than dense crystals. |
Custom Detector RFQ Checklist
| RFQ Item | Information to Provide |
|---|---|
| Application | Spectroscopy, survey, portal monitoring, whole-body counting, nuclear medicine, research or custom instrument. |
| Radiation target | Gamma energy range, expected count rate, resolution target and isotope/source information. |
| Scintillator | Material, size, geometry, resolution requirement and encapsulation requirement. |
| Readout | PMT, SiPM, photodiode, high voltage, connector, cable and electronics interface. |
| Mechanical | Housing material, window, flange, mounting, shielding interface and drawing. |
| Order information | Prototype quantity, batch quantity, inspection report and delivery schedule. |
