Portable USB spectrometer for detection of radon

AbstraktAbstract

Portable USB spectrometer (Multichannel analyzer) used mainly for detection of alpha particles was developed. The device has three parts - i] digital (Digital Signal Processor with sampling ADC, RAM/ROM memories, 14 bits/20Msps ADC; 16 bits/160 MIPS DSP; 1 MB RAM), ii) analog module and iii) USB 2.0 controller. Analog module has following features: both bias polarities, both polarities of output signals, different shaping times, selectable energy ranges (amplification), fast and slow triggers, good FWHM (noise measured by Si detector for 0 pF = 4,5 keV, for 100 pF = 9,0 keV), bias for detector up to 500 V. Module was produced by smd technology, It is designed as a flexible multipurpose unit, which can be easily modified to meet specific requests of the experimental conditions (e.g. it works as simple digital osciloscope).

Portable USB spectrometer (Multichannel analyzer) used mainly for detection of alpha particles was developed. The device has three parts - i] digital (Digital Signal Processor with sampling ADC, RAM/ROM memories, 14 bits/20Msps ADC; 16 bits/160 MIPS DSP; 1 MB RAM), ii) analog module and iii) USB 2.0 controller. Analog module has following features: both bias polarities, both polarities of output signals, different shaping times, selectable energy ranges (amplification), fast and slow triggers, good FWHM (noise measured by Si detector for 0 pF = 4,5 keV, for 100 pF = 9,0 keV), bias for detector up to 500 V. Module was produced by smd technology, It is designed as a flexible multipurpose unit, which can be easily modified to meet specific requests of the experimental conditions (e.g. it works as simple digital osciloscope).