FLINT — A Compact, Digital and Complete Gamma-Ray Detector
NaI (TI) , CsI (TI) , CeBr with SIPM and multichannel analyzer.
FLINT is a compact, digital and complete gamma-ray spectrometer. The device integrates a gamma-ray scintillator crystal, Si-arrays acting as photomultiplier (SiPMs), a temperature-stabilized bias power supply and a full-featured digital multichannel analyzer (MCA). All these components are arranged into a compact layout and thermically isolated case.
The FLINT spectrometer can be supplied with many scintillator crystals types, such as NaI(Tl), CsI(Tl), CeBr3,LaBr3 (Ce), LBC, SrI2, etc; and different crystal sizes as well. However, the standard device is an integrated round NaI(Tl) scintillator crystal of 2×2 (51 mm diameter by 51 mm height) or 3×3 (76 mm by 76 mm height) inches in size.
The device is provided with a basic software package that allows to control the device, and to acquire and visualize the energy spectrum. It can also be supplied with an advanced and full-featured gamma-ray spectrum analysis software: bGamma.
Overview
The FLINT device is a complete gamma-ray spectrometer. The device integrates in a single enclosure all the necessary components for detection and energy distribution of the emitting gamma-ray radiation.
The FLINT device can be ordered with different types of scintillator crystals and also different sizes. However, the standard models are using a NaI(Tl) scintillator of 2×2 or 3×3 inches crystal sizes.
The FLINT uses Si-arrays as photomultipliers (SiPM). The SiPMs are optimally positioned and warrant the best light collection and energy resolutions.
The power for the scintillation and SiPMs is internally generated by a temperature compensated power supply. The power supply compensation results into minimum spectrum peak shift and energy resolution deterioration.
The FLINT integrates a full-featured, advanced and digital MCA for processing the pulses from the scintillator. This integration minimizes any noise induction and provides high spectroscopy performance.
The FLINT MCA has up-to 4096 channels with a channel depth of 32-bits. It has a trapezoidal digital shaper that can be tuned to any application and/or setup conditions. Additionally it has digital base line (BLR) restorer and advanced pile up rejector (PUR). The MCA also has powerful algorithms for electronic noise rejection, filtering and noise threshold capabilities.
The MCA implements two modes of data acquisition: Pulse Height Analysis (PHA) and Multi-channel scaling (MCS)
The device is cased in an aluminum encapsulation of compact sizes with only one connector (USB mini type B) to the PC.
Specifications
Scintillator detectors
- Can be ordered with many scintillator materials such as: NaI(Tl), CsI(Tl), CeBr3, LaBr3 (Ce), LBC, and SrI2.
- Standard scintillator crystals will be round NaI(Tl) with 2×2-inch and 3×3-inch crystal sizes.
- Typical energy resolution @ 137Cs better than 7.6 %
- Low energy noise lower than 15 keV
PHA acquisition mode
- Spectral memory size of 256, 512, 1024, 2048, and 4096 channels, 32-bit depth per channel.
- Coarse gain with amplification factors of 1, 2, 4, and 8. Fine gain from 1 to 2 in steps of 1/4096.
- Acquisition preset on time (Live or Real), or count forever, or counts on ROI, or a combination of both.
MCS acquisition mode
- Spectral memory size of 256, 512, 1024, 2048 and 4096 channels.
- Dwell time from 0.1 sec to “count-forever”.
- Easy to setup from ROIs or nuclide information.
Digital Settings
- Rise Time: from 0.1 to 12 µsec in steps of 0.2 µsec.
- Flat Top: from 0.1 to 8.0 µsec in steps of 0.1 µsec
- Threshold: 1 to 255
- Digital Base Line Restorer (BLR)
- Pile-Up Rejector (PUR)
- Includes a digital oscilloscope
Bias Power Supply
- Internally generated. Typically +6 – 16 Volts. Voltage supply stabilized for temperature changes.
- Powered over 5 Volts from PC USB port
Bias Power Supply
- Internally generated. Typically +6 – 16 Volts. Voltage supply stabilized for temperature changes.
Data communication
- USB 2.0, cable of (standardly) 3 m long included
Physical
- Size:
- Model FLINT-NAI-2: 57 mm diameter and 96 mm height.
- Model FLINT-NAI-3: 82 mm diameter and 121 mm height.
- Connectors:
- USB type mini B (to computer)
- Indicators:
- Yellow LED for incoming count rate (ICR)
- Blue LED for power and communication status
Enviromental
- USB 2.0, cable of (standardly) 3 m long included
Other
- The device is supplied with basic software to control operation, data acquisition, and visualization. The software is MS Windows compatible.
- (upon request) necessary programming libraries for MS Windows and Linux®
Optional
- FLINT can be supplied with full-featured gamma-ray spectrum analysis and radioisotope quantification software bGamma.
Certifications
- Operational ambient temperature range: -10 °C to 60 °C
Technical Resources
Downloadable Resources
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