Topaz-SiPM

The miniature MCA designed specifically for SiPM detectors

The Topaz-SiPM is a miniature MCA designed specifically for SiPM detectors. With a size of only 7 x 4.5 x 2.6cm, the Topaz-SiPM is the smallest of the Topaz MCA series and very likely the smallest full-featured MCA on the market today.

Introduction

TOPAZ-SiPM is a compact, stand-alone digital Multi-Channel Analyser (MCA), that is able to perform Pulse Height Analysis (PHA) of the signal produced by scintillation detectors which incorporates Si devices as photomultipliers (SiPMs). These type of scintillators can use standard crystals such as NaI(Tl), CsI(Tl), BGO, LaBr3 (Ce), LaCl3(Ce), etc.

The device is useful for obtaining the energy spectrum from the photon radiation detected by the scintillator detector and can be easily interfaced to a typical PC or notebook via a standard USB port for further data transfer and analysis.

A  “free-to-download”  basic software is provided with the device, but this spectroscopy device is compatible  with our fully featured gamma-ray spectrum analysis software— bGAMMA.

A set of programming libraries is also offered, which makes the incorporation of the TOPAZ-SiPM into existing radiation systems or setups very easy. The programming libraries are available for both MS Windows and Linux operating systems.

The device is available either in a rugged, pocket-size aluminium box with input and output connectors, or it is available as a separate Printed-Circuit Board (PCB) for OEM distribution.

The new bGamma spectroscopy Software is an all-inclusive, modern software package for gamma-ray spectrum analysis, radionuclide identification and quantification. The software can analyse any recorded gamma-ray spectrum independently of the detector type, geometry or sample. 

  • Two modes of acquisition: Pulse Height Analysis (PHA) and Multi-Channel Scaling (MCS)
  • Up to 4096 channels
  • Analogue amplification factor from 1 to 16
  • Digital pulse processing using the traditional trapezoidal shaper
  • Built-in digital Baseline Restorer (BLR) and Pile-Up Rejector (PUR)
  • Advanced baseline noise reduction techniques to improve performance with noisy SiPMs
  • 5V low-ripple, low-noise supply for the SiPM preamplifier
  • Additional programmable External I/O can be used as an external counter input or SCA output
  • USB 2.0 communications interface
  • Powered from the PC via the USB cable
  • Size: 70 x 45 x 26mm, PCB alone is 63 x 39mm

The  TOPAZ-SiPM is an advanced,  fully digital, miniature, and compact Multi-Channel Analyser. This device is used to process the electronic pulses produced by a Si-device as photomultiplier which is coupled to a  scintillator detector.  Such detectors are commonly used in the detection of gamma-ray radiation due to their high detection efficiency, medium energy resolution and relatively low price.

The  MCA  implements two modes of data acquisition:  Pulse Height Analysis (PHA) and Multi-Channel Scaling (MCS). PHA mode is regularly used in nuclear spectrometry and radiometry, while  MCS  is used to follow photon detection in particular specific energy regions in the function of time.

MCS acquisition mode is useful in both laboratory and industrial applications which make use of radioactive sources or seek for radioactive materials.

The  TOPAZ-SiPM design makes use of the latest advances in digital electronics. Its footprint (both PCB and boxed version) are minimal sizes, yet it still provides a large range of selection of settings and device capabilities,   which warrants its exceptional spectroscopy performance independently from the scintillator being connected. The device automatically provides the necessary power for the SiPM to operate. The MCA has a spectral memory size of up to 4096 channels and can perform MCS in addition to PHA.

The MCA comes with a basic and free-to-download software package which allows the user to control and acquire the energy spectrum and perform a few basic visualisation and spectrum computations.

The TOPAZ-SiPM MCA is fully supported and compatible by our fully-featured gamma-ray spectrum analysis software bGAMMA.

The MCA is cased into a rugged miniature aluminium box with one input connector (detector signal) and output/control connector (USB mini type B). Additionally, the MCA has an extra connection for programmable input/output signals (GPIO). The functionality of the GPIO port can be conveniently set using the bMCA or bGamma software.

A set of programming libraries can be requested for interfacing this device into existing instruments or software. This SDK is available for Windows and Lin

The  TOPAZ-SiPM is an advanced,  fully digital,  miniature, and compact Multi-Channel Analyzer. This device is used to process the electronic pulses produced by a Si-device as photomultiplier which is coupled to a  scintillator detector.  Such detectors are commonly used in the detection of gamma-ray radiation due to their high detection efficiency, medium energy resolution and relatively low price.

Item Data
PHA acquisition mode Spectral memory size of 256, 512, 1024, 2048 and 4096 channels
Coarse gain with amplification factors of 1, 2, 4 and 8. Fine gain from 1 to 2 in steps of 1/4096
Upper and Lower Level Discriminator settings given in channels
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)
Preamp Power Supply Provision of necessary voltage supply to operate the SiPM preamplifier of the detector: 5V 200 mA
Data communication USB 2.0, cable (standardly 1.5 m length) included
Physical MCA box: length 70 mm, width 45 mm, height 26 mm
PCB only: 63 mm x 39 mm
Weight: less than 70 grams (including box)
Connectors : USB type mini B (to computer)
Lemo connector. Type ERN.03.302.CLL for both detector signal and SiPM power
Lemo connector Type ERN.00.250.CTL for GPIO
Indicators: Yellow LED for incoming count rate (ICR)
Green LED for power and communication status
Other Device is supplied with a basic software to control operation, data acquisition and visualization.
Full featured gamma-ray spectroscopy software—bGAMMA (optional)
Necessary programming libraries for Microsoft Windows and Linux (upon request)
Certifications The device is CE compliant
Document Version 1.01, Date: 11 2019

bGamma

Modern Gamma Spectroscopy Software

The new bGamma spectroscopy Software is an all-inclusive, modern software package for gamma-ray spectrum analysis, radionuclide identification and quantification. The software can analyse any recorded gamma-ray spectrum independently of the detector type, geometry or sample.

bGamma provides all the necessary tools and functionality for performing a detailed analysis of complex gamma-ray spectra and the corresponding radionuclide identification for the given sample.

“The new bGamma software is a comprehensive software package designed from the outset to bring gamma spectrum analysis up to modern requirements…”

further info->>>

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