The design and operation of scintillation detectors are shifting to Silicon Photomultiplier (SiPM) detectors from the traditional Photomultiplier Tube (PMT) due to the inherent advantages of compactness (average height reduction for a detector about 4”), ruggedness, low voltage (run at 5V in, and use less than 150mW) and magnetic field insensitivity.
SiPMs require much less power than PMTs, typically by a factor of 20x – 30x lower operating voltage. SiPMs have a higher photon detection efficiency than PMTs for scintillation light. This creates larger signals with less stochastic and Poisson noise. PMTs are greatly affected by magnetic fields whereas SiPMs are insensitive to magnetic fields. The SiPM is a highly attractive alternative, providing all the benefits of a solid-state sensor while still achieving the low-light detection capabilities of the PMT.
An underappreciated advantage of SiPMs is that they are discrete and separable, unlike monolithic PMTs. This allows for the usage of fewer SiPMs strategically placed on the crystal surface, striking a balance between system performance and cost. We can optimize this balance with their experience with scintillation optics and the ability to tailor the detector assembly to match the SiPM configuration.
We have developed unique integrated solutions to truly leverage the value of SiPMs and designed for maximum flexibility with multiple options to meet your needs.
Products range from upgraded versions of basic detectors with PMTs and integrated analog electronics to fully integrated, plug and play detectors with MCAs and a digital readout. Options include:
- Functionality ranging from basic counters to analog and digital spectroscopy
- Modular construction to add capability to meet connectivity and environmental requirements
- Wide range of performance levels (power, resolution, etc.)
- Scalable for a range of sensor sizes and applications
Fully Optimized Total Sensor Solution:
Depending on the application, we are able to adapt and optimize SiPM quantity and layout on the crystal in order to achieve optimum design and performance tradeoffs.
Using our expertise with detector processing and packaging and optical analysis, we have developed cost-effective solutions to provide excellent performance, including optimization of:
- Number and location of SiPMs for the required performance
- Detector packaging to match SiPM configuration
- Offer SiPM solutions on almost any geometry of scintillator
- Analog output options: Charge Sensitive, I-toV, TTL
- Gain compensation over a wide temperature range
- Option for watertight package and connectors
- Wide range of performance levels (power, resolution, etc.)
Ruggedness:
An acknowledged leader in building long-lasting, rugged radiation detectors, has leveraged our expertise to develop industry-leading SiPM integrated solutions. Features include:
- Designed for and evaluated under ANSI N42.34, 2006
- Option for watertight package and connectors
- Long-lasting hermetic sealing technology
| Scintillator size 2" x 2" | Length saved | Volume gained |
|---|---|---|
| Nal(TI) or NaIL | 2.73” (69.3 mm) | 12.2 cu inch (200 ccm) |
| CLLB, LaBr3 or Enhanced LaBr3 | 2.47” (62.8 mm) | 11.3 cu inch (185 ccm) |
| Scintillator size 2" x 4" x 4" | ||
| Nal(TI) or NaIL | 4.423" (112.344 mm) | 45 cu inch (737ccm) |
- NaI(Tl) Detector with SiPM
- NaIL Detector with SiPM
- LaBr and Enhanced LaBr Detector with SiPM
- Interpreting Model Numbers
| Model |
Scintillator Dimensions |
Electronics |
PHR Specifications |
Part Number |
|---|---|---|---|---|
| Si38.1NI38.1D80 | 1.5" diameter x 1.5" | I to V Positive | ≤ 8% | 690-1113 |
| Si38.1NI38.1B80 | 1.5" diameter x 1.5" | Charge Sensitive Positive | ≤ 8% | 690-1119 |
| Si50.8NI50.8D75 | 2" diameter x 2" | I to V Positive | ≤ 7.5% | 690-1100-16-00 |
| Si50.8NI50.8B75 | 2" diameter x 2" | Charge Sensitive Positive | ≤ 7.5% | 690-1065-16-00 |
| Si76.2NI76.2D85 | 3" diameter x 3" | I to V Positive | ≤ 8.5% | 690-1105 |
| Si76.2NI76.2B85 | 3" diameter x 3" | Charge Sensitive Positive | ≤ 8.5% | 690-1096 |
| USB OUTPUT ADAPTER, SiPM ANALOG | 690-1071 | |||
| Model |
Scintillator Dimensions |
Electronics |
PHR Specifications |
Sales Drawing |
|---|---|---|---|---|
| Si50.8NL50.8D75 | 2" diameter x 2" | I to V Positive | ≤ 7.5% | 690-1081-16-00 |
| Si50.8NL101.6D80 | 2" diameter x 2" | I to V Positive | ≤ 8% | 690-1109 |
| Si76.2NL76.2D85 | 3" diameter x 3" | I to V Positive | ≤ 8.5% | 690-1102 |
| Si50.8X101.6NL101.6D85 | 2" X 4" X 4" | I to V Positive | ≤ 8.5% | TBD |
| USB OUTPUT ADAPTER, SiPM ANALOG | 690-1071 | |||
| Scintillator | Model |
Scintillator Dimensions |
Electronics |
PHR Specifications |
Sales Drawing |
|---|---|---|---|---|---|
| LaBr3 | Si38.1BL38.1D40 | 1.5" diameter x 1.5" | I to V Positive | ≤ 4% | 690-1118 |
| Enhanced LaBr | Si38.1BE38.1D35 | 1.5" diameter x 1.5" | I to V Positive | ≤ 3.5% | 690-1142 |
| Example Model |
SiPM based |
Diameter or Length (mm) | Width (mm) | Scintillator | Height (mm) | Elec. | Special | Specified Max PHR | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Si50.8x101.6NL101.6D85 |
Si |
50.8 | 101.6 | NaIL | 101.6 | D | None | 85 | ||||
| Si50.8NI50.8BW85 | Si | 50.8 |
absence indicates cylindrical geometry |
NaI(Tl) | 50.8 | B | W | 85 | ||||
|
Si50.8NI50.8B75 |
Si | 50.8 | NaI(Tl) | 50.8 | B | None | 75 | |||||
| Code | Code | Code | Resolution of Cs-137 | |||||||||
|
|
NI | NaI(Tl) | B | Analog, CS, P | W | Well |
85 |
≤8.5% | ||||
| NL | NaIL | D | Analog, I-V, P |
X | Other | 75 | ≤7.5% | |||||
| CB | CLLB | - | None | |||||||||
| BE | Enhanced LaBr | |||||||||||
| BL | LaBr3 | |||||||||||
