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Digital Pulse Processing for Charge Integration and Pulse Shape Discrimination

DPP-PSD

Home Firmware & SoftwareFirmwareDigital Pulse Processing (DPP) DPP-PSD

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

2745

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)

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


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)

    • 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


Ordering Options

Code Description
WFWDPPNGAA20

DPP-PSD – Digital Pulse Processing for Pulse Shape Discrimination (8ch x 720)

 

(In production)

WFWDPPNGAA25

DPP-PSD – Digital Pulse Processing for Pulse Shape Discrimination (16ch x 725)

 

(In production)

WFWDPPNGAA30

DPP-PSD – Digital Pulse Processing for Pulse Shape Discrimination (16ch x 730)

 

(In production)

WFWDPPNGAA51

DPP-PSD – Digital Pulse Processing for Pulse Shape Discrimination (8ch x 751)

 

(In production)

WFWDPPNGAD20

DPP-PSD – Digital Pulse Processing for Pulse Shape Discrimination (4/2ch x 720)

 

(In production)

WFWDPPNGAD25

DPP-PSD – Digital Pulse Processing for Pulse Shape Discrimination (8ch x 725)

 

(In production)

WFWDPPNGAD30

DPP-PSD – Digital Pulse Processing for Pulse Shape Discrimination (8ch x 730)

 

(In production)

WFWDPPNGAD51

DPP-PSD – Digital Pulse Processing for Pulse Shape Discrimination (4ch x 751)

 

(In production)

Manual Download Compare

DPP-PSD: Manuals

Name
Revision
Format
File Size
Last Update
UM4380 725-730 DPP-PSD Registers and Data Format
7
pdf
1.99 Mb
03/04/2023
UM4855 720 DPP-PSD Registers and Data Format
1
pdf
1.4 Mb
04/05/2024
UM5110 751 DPP-PSD Registers and Data Format
3
pdf
12.36 Mb
21/12/2023
UM5416 DT5790 DPP-PSD Registers and Data Format
1
pdf
1.3 Mb
06/05/2020
UM5960 CoMPASS User Manual
26
pdf
15.02 Mb
16/12/2025

DPP-PSD: Download

Guides

Name
Revision
Format
File Size
Last Update
GD2827 - How to make coincidences with CAEN digitizers
4
pdf
2.54 Mb
09/10/2025
GD6300 CoMPASS QuickStart Guide
26
pdf
14.9 Mb
16/12/2025
x751 Family DPP-PSD Firmware Compatibility
0
pdf
0.2 Mb
05/12/2018

White Papers

Name
Revision
Format
File Size
Last Update
WP2081 Digital Pulse Processing in Nuclear Physics
4
pdf
6.16 Mb
13/06/2017

Application Notes

Name
Revision
Format
File Size
Last Update
AN3250 - Pulse Shape Discrimination with different CAEN digitizers running DPP-PSD firmware
0
pdf
1.21 Mb
14/07/2014
AN5157 - A Readout System with CAEN Digitizer for Clover Detectors with Anti-Compton Shield
2
pdf
2.32 Mb
27/01/2017
AN2506 - Digital Gamma Neutron discrimination with Liquid Scintillators
3
pdf
1.37 Mb
19/11/2011
AN5995 - Dead Time characterization of the x725-x730 Digitizer Family with DPP-PSD
0
pdf
0.8 Mb
15/03/2017
AN6308 - Downsampling measurements with CAEN Digitizer 720/724/740/751 families
0
pdf
1.07 Mb
03/10/2017
AN6872 - Energy and Timing characterization of two CeBr3 detectors with a DT5730 digitizer and CoMPASS
0
pdf
1.24 Mb
12/02/2019
AN7661 - Positron Annihilation Lifetimeme Spectroscopy measurement with CAEN digitizers
0
pdf
0.95 Mb
22/09/2020

Articles

Name
Revision
Format
File Size
Last Update
AR2548 - An integrated mobile system for port security
0
pdf
0.46 Mb
07/06/2011
AR2610 - Special Nuclear Material Detection Studies With The SMANDRA Mobile System
0
pdf
0.13 Mb
21/07/2011
AR2611 - High Rate Read-Out Of LaBr(Ce) Scintillator With The CAEN V1720 FADC
0
pdf
0.1 Mb
19/07/2011
AR2613 - Special nuclear material detection with a mobile multi-detector system
0
pdf
0.67 Mb
01/09/2011
AR8178 - A New Low-energy Plastic Scintillation Neutron Detector For Real-time Pulse Shape Discrimination
0
pdf
17.89 Mb
11/09/2016
AR8184 - A novel self-sustained digital acquisition system employing multi-frequency digitizers for the BARC Clover + LaBr3 array
0
pdf
0.16 Mb
03/06/2016
Name
Revision
Format
File Size
Last Update
x730 - DPP-PSD Firmware
4
cfa
3.1 Mb
04/09/2025
x725 - DPP-PSD Firmware
4
cfa
3.1 Mb
04/09/2025
x720 DPP-PSD Firmware
4
cfa
1.78 Mb
29/08/2024
DT5790 DPP-PSD Firmware
4
cfa
1.78 Mb
29/08/2024
x751 - DPP-PSD Firmware Legacy
4
cfa
0.96 Mb
05/05/2021
x751 - DPP-PSD Firmware
4
cfa
1.04 Mb
31/01/2025
x730S - DPP-PSD Firmware
4
cfa
6.43 Mb
04/09/2025
x725S - DPP-PSD Firmware
4
cfa
6.46 Mb
04/09/2025
2740 DPP-PSD Firmware - 1G
2025052200
cup
16.09 Mb
10/06/2025
2745 DPP-PSD Firmware - 1G
2025052200
cup
16.09 Mb
10/06/2025
2730 DPP-PSD Firmware - 1G
2025052203
cup
14.17 Mb
10/06/2025

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