Introduced March 2018, Topaz-HR is a compact stand-alone MCA for high-resolution detectors such as Hyper Pure Germanium Detectors (HP-Ge).
Topaz-HR is a compact, stand-alone digital Multi-Channel Analyzer (MCA), which is able to perform a Pulse Height Analysis (PHA) of the signal produced by high resolution gamma-ray semiconductor detectors, such as Hyper-Pure Germanium Detectors (HPGe). These detectors are commonly used in high-resolution gamma-ray spectrometry, an analysis method extensively used by advanced radio-analytical laboratories as part of comprehensive nuclear analytical methods. The Topaz-HR MCA can also be used with detectors with lesser energy resolution, such as scintillators like NaI (Tl), LaBr3, CeBr3, etc.
The Topaz-HR is supplied with a basic software package that allows the user to control the device, and to acquire and visualize the energy spectrum. The software incorporates an advanced and easy-to-use “discovery” function that can be used to detect automatically all BrightSpec-built MCAs that are physically connected to the PC or in the immediate network neighborhood. Alternatively, the MCA is offered with our full-featured, advanced Gamma-ray spectrometry software package - bGamma. This software allows the user to perform data acquisition and spectrum analysis within the same software framework, including all necessary calibrations, and radioactivity quantization per radionuclide in the sample.
A set of programming libraries is also available, which makes the incorporation of the Topaz-HR into existing radiation systems or setups very easy. The programming libraries are available for MS Windows, Linux and Mac operating systems.
Download the full specification sheet
The Topaz-HR is an advanced, fully digital, compact Multi-Channel Analyzer. This device is used to process the electronic pulses typically produced by high-resolution semiconductor detectors such as Hyper-Pure germanium detectors (HPGe). However, the MCA can also be connected to other types of detectors, including scintillators (e.g. NaI(Tl), CeBr3 or LaBr3, etc.), which makes it a valuable and multi-purpose device, a “must have” in your lab.
The MCA implements several advanced modes of data acquisition: Pulse Height Analysis (PHA), Multi-channel scaling (MCS), LIST and Timestamped-LIST mode (TLIST). For the latter, each recorded pulse is stored with the arrival time stamp in addition to the pulse height information (energy). In TLIST mode the event time resolution is better than 30 nano-seconds. The Topaz-HR design incorporates the latest advances in digital electronics, the core of the MCA is its 14-bit high-quality fast flash ADC running at 50 Ms/s, a 100 MHz DSP processor and a 200 MHz CPU. The device has a spectral memory of up to 16 384 (16K) channels of 32-bit depth available for any acquisition mode.
The device includes a low-noise High Voltage bias supply which is able to generate an output from 0 to 6000 Volts, as well as a low voltage supply (±24 and ±12 Volts) intended to power the most commonly found pre-amplifiers via a standard DB9 connector.
The Topaz-HR transfers acquired data via a high speed USB connection to the PC with data transfer rates of 480 Mbit/sec. The MCA is powered using an external low-noise AC/DC power supply, which is included in the delivered package. The MCA is encased into a rugged aluminum box with all the necessary connectors for the detector and auxiliary signals, plus one USB (mini-B) for the PC. In the front panel several LEDs signalize the status of the device and data acquisition.
The device can be controlled with a basic acquisition software (bMCA software), which is freely downloaded from the BrightSpec Website. Alternatively, the MCA control is incorporated into our fully-featured Gamma-ray spectrometry analysis software— bGamma. An attractive package price can be obtained when ordering the MCA together with bGamma software. The programming libraries for Windows®, Linux™ and macOS are available as well.
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