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DPP-PSD

Digital Pulse Processing for Charge Integration and Pulse Shape Discrimination

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Features

  • Digital solution equivalent to Dual Gate QDC + Discriminator + Gate Generator
  • Implemented in the digitizer families:
    • 720 (12-bit @ 250 MS/s)
    • 725 (14-bit @ 250 MS/s)
    • 730 (14-bit @ 500 MS/s)
    • 751 (10-bit @ 1 GS/s)
    • 2740 (16-bit @ 125 MS/s)
    • 2745 (16 bit @ 125 MS/s with VGA)
    • 2730 (14 bit @ 500 MS/s with VGA)
    • DT5790 Digital Pulse Analyzer (12 bit @ 250 MS/s)
  • Fully supported by the CoMPASS software
  • NSCLDAQ Supported
  • Double charge integration for Pulse Shape Discrimination
    • Programmable width and position of the two gates
  • Single gate integration for energy spectra calculation
  • Self-Gating (no discriminator) with digital noise filtering
    • No delay line is needed to fit the position of the pulse inside the gate
  • Automatic baseline subtraction (pedestal)
  • Digital Constant Fraction Discrimination for fine time stamp interpolation (pico-second intrinsic resolution)
    • Timing information (pulse time-stamps)
  • No conversion time to reduce the dead-time of the acquisition
  • On-line coincidences/anti-coincidences acquisition mode among channels
  • Free downloadable firmware trial version
More info
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Overview

Free downloadable DPP-PSD Trial version for 720, 725, 730, 751, 2740, 2745 and 2730 series.

  • The user can download and install DPP-PSD firmware without any license key and use it with time frame limitation: every 30 min the user have to restart (Power off/power on) the board
  • To get time-unlimited operating DPP-PSD the user should purchase a License
  • x790 Digital Pulse Analyzers are factory provided with time-unlimited operating DPP-PSD firmware and don’t require licensing

DPP-PSD (Digital Pulse Processing for Charge Integration and Pulse Shape Discrimination) firmware is fully controlled by CoMPASS, the CAEN multiparametric spectroscopy software for Physics applications.

A digitizer running the DPP-PSD firmware becomes a multichannel data acquisition system for nuclear physics or other applications requiring radiation detectors. The digitizer accepts signals directly from the detector and implements a digital replacement of Dual Gate QDC, Discriminator and Gate Generator. All these functions are performed inside the board FPGA without any use of external cables, nor additional boards or delay lines. Therefore, a single compact system takes care of the acquisition, replacing the traditional analog boards.

It is also possible to realize multi-board systems: the front panel clock, the trigger and the general-purpose LVDS I/Os connectors (VME only) make possible the synchronization of multiple boards.

 

Software Firmware Features 720 (1) 725 730 751 2740 (2) 2745 (2) 2730 (2)
Compass DPP-PSD ICH (Independent channels) ✔ ✔ ✔ ✔ ✔ ✔ ✔
WV (Waveforms) ✔ ✔ ✔ ✔ ✔ ✔ ✔
TS (Timestamp) ✔ ✔ ✔ ✔ ✔ ✔ ✔
TDC (Time to Digital Converter) ✔ ✔ ✔ ✔ ✔ ✔
QDC (Charge to Digital Converter) ✔ ✔ ✔ ✔ ✔ ✔ ✔
CFD (Constant Fraction Discriminator) ✔ ✔ ✔ ✔ ✔ ✔
PSD (Pulse Shape Discrimination) ✔ ✔ ✔ ✔ ✔ ✔ ✔

(1) ONLY versions: E/F/G (VME) – E/F (Desktop) – E/F (VME64X) – B/C/D/E (NIM)

(2)For comprehensive information on available firmware for the ‘Digitizer 2.0’ family and the organization of programming files (.CUP), please consult the FAQ CUP files for Digitzer 2.0

Applications
  • Spectroscopy with scintillation organic/inorganic detectors
  • SiPM readout systems
  • Neutron physics with liquid scintillation detectors
  • Acquisition from phoswich detectors
  • Time-dependent spectroscopy
  • Precise timing for Time of Flight measurements
  • Homeland security
  • Neutron imagine
  • PET
  • Tagged neutron for inspection systems

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Ordering Options

Code Description
WFWDPPNGAA20 DPP-PSD - Digital Pulse Processing for Pulse Shape Discrimination (8ch x 720)  
WFWDPPNGAA30 DPP-PSD - Digital Pulse Processing for Pulse Shape Discrimination (16ch x 730)  
WFWDPPNGAA51 DPP-PSD - Digital Pulse Processing for Pulse Shape Discrimination (8ch x 751)  
WFWDPPNGAA25 DPP-PSD - Digital Pulse Processing for Pulse Shape Discrimination (16ch x 725)  
WFWDPPNGAD20 DPP-PSD - Digital Pulse Processing for Pulse Shape Discrimination (4/2ch x 720)  
WFWDPPNGAD25 DPP-PSD - Digital Pulse Processing for Pulse Shape Discrimination (8ch x 725)  
WFWDPPNGAD30 DPP-PSD - Digital Pulse Processing for Pulse Shape Discrimination (8ch x 730)  
WFWDPPNGAD51 DPP-PSD - Digital Pulse Processing for Pulse Shape Discrimination (4ch x 751)  

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