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Complete Readout System based on Weeroc ASIC

DT5550W

Home Modular Pulse Processing ElectronicsRead Out SystemsElectronics for Silicon Photomultipliers DT5550W

The CAEN Mod.DT5550W is a development and DAQ platform with programmable FPGA designed to read out Weeroc ASICs. The DT5550W can be used either as evaluation system for WeeROC ASICs, either as full featured Acquisition System supporting a wide range of SiPM detectors.

The full system is composed by two boards: a motherboard with an FPGA, USB 3.0 connectivity, power supply and ADCs, and a replaceable piggyback board that hosts 1,2 or 4 WeeROC ASICs, detector connectors and SiPM bias power supply.

A default firmware is provided for each supported piggyback board, allowing the user to read-out the ASICs and perform energy and time measurements with the supported detectors.

The DT5550W is compatible with SCI-Compiler, a graphic tool for Windows which allows the user to realize a custom readout logic for the available ASICs. This tool allows to generate the VHDL firmware code starting only from graphical blocks which can be connected together in the GUI, thus reducing the development time also for non-expert firmware designers.

The following piggyback boards are available:

Piggyback board

ASIC

Optimal detectors

Compatible detectors (not tested)

Channels No.

A55PET4

4 x PETIROC2A

SiPM, SiPM matrix

RPCs

128

A55PET2

2 x PETIROC2A

SiPM, SiPM matrix

RPCs

64

A55PET1

1 x PETIROC2A

SiPM

RPCs

32

A55CIT4

4 x CITIROC1A

SiPM, SiPM matrix

/

128

A55CIT2

2 x CITIROC1A

SiPM, SiPM matrix

/

64

Piggyback Board
CAEN piggyback boards offer to the user the possibility to read out up to 128 SiPM detectors or two 64-channels SiPM matrices. The piggyback is equipped with CAEN A7585D HV module to bias all connected SiPMs. Up to 2 Hamamatsu matrices (S13361-3050AE-08 64 channels model) can be connected directly on the piggyback board, with the possibility to use an external adapter for any kind of matrix or array interfacing.
Developed in collaboration with 


Features

  • Comprehensive Programmable Board based on Weeroc ASICs

  • Available with Petiroc and Citiroc ASICs for SiPM Readout

  • Single Desktop Unit available in 32, 64, and 128-channel configurations

  • On-board Power Supply for SiPM Bias (20-85 V)

  • Cross-board synchronization for System-building and readout of large SiPM Arrays

  • Ideally suited for energy calculation in SiPM-based imaging and spectroscopy applications

  • Petiroc version is the perfect solution for highly accurate SiPM time-of-flight applications (Intrinsic 37ps timing resolution)

  • Strip adapter (2.54mm pitch) included for easy connection to any type of SiPM matrix or array

  • Optional remotization kit for Hamamatsu S13361-3050AE-08 64-channel SiPM matrix, with 2-meters microcoaxial cable

  • Open-FPGA Capability via Sci-Compiler software, a graphical development platform for quick, user-friendly FPGA programming

  • Includes SCI-5550W Readout Software (open source) for DAQ Management and ASIC Configuration

  • 80MS/s, 14bit ADC

  • Clock-In/Clock-Out (LEMO Connectors) for multi-board sync

  • 8 General Purpose Programmable I/O (LEMO Connectors) for DAQ Control Signals (external trigger, busy, veto, etc…)

  • USB 3.0 supports fast data transfer


Ordering Options

Code Description
WDT5550WXAAA

DT5550W – Weeroc ASICS Evaluation System

 

(Assembled)

RoHS
WKREMOT5550W

Remotization kit with 2-meters cable for DT5550W

 

(In production)

RoHS
WW55CITI1AA2

A55CIT2 – Evaluation Board with 2 CITIROC chip

 

(In production)

RoHS
WW55CITI1AA4

A55CIT4 – Evaluation Board with 4 CITIROC chip

 

(In production)

RoHS
WW55PETI2AA1

A55PET1 – Evaluation Board with 1 PETIROC chip

 

(In production)

RoHS
WW55PETI2AA2

A55PET2 – Evaluation Board with 2 PETIROC chip

 

(In production)

RoHS
WW55PETI2AA4

A55PET4 – Evaluation Board with 4 PETIROC chip

 

(In production)

RoHS
Data Sheet Manual Download Compare

DT5550W: Data Sheets

Name
Revision
Format
File Size
Last Update
REMOT5550W - Remotization kit for DT5550W
0
pdf
1.75 Mb
08/06/2021

DT5550W: Manuals

Name
Revision
Format
File Size
Last Update
DT5550W - WeeROC ASICs Evaluation and Readout System
6
pdf
3.44 Mb
21/07/2025
A55PETx - Piggyback Board for DT5550W
5
pdf
4.44 Mb
02/03/2022
A55CITx - Piggyback Board for DT5550W
3
pdf
4.47 Mb
02/03/2022

DT5550W: Download

Catalogs

Name
Revision
Format
File Size
Last Update
DT5550W - WeeROC ASICs Evaluation and Readout System
6
pdf
3.44 Mb
21/07/2025
A55PETx - Piggyback Board for DT5550W
5
pdf
4.44 Mb
02/03/2022
A55CITx - Piggyback Board for DT5550W
3
pdf
4.47 Mb
02/03/2022

Guides

Name
Revision
Format
File Size
Last Update
Sci-Compiler Quick Start Guide
7
pdf
5.16 Mb
20/03/2025

Articles

Name
Revision
Format
File Size
Last Update
AR11512 - Enabling pulse shape discrimination with commercial ASICs
1
pdf
3.47 Mb
27/05/2024
AR86609 - Atmospheric ray tomography for low-Z materials: implementing new methods on a proof-of-concept tomograph
1
pdf
3.12 Mb
24/02/2021

Brochures / Flyers

Name
Revision
Format
File Size
Last Update
Sci-Compiler - User Firmware Generator & Compiler for CAEN Programmable Boards
1
pdf
1.6 Mb
10/04/2025

Applications SW

Name
Revision
Format
File Size
Last Update
OS
DT5550W Readout Software
2025.7.9
zip
148.18 Mb
10/07/2025
Windows
Open Hardware Firmware Upgrader
2025.6
exe
143.64 Mb
14/07/2025
Windows
Name
Revision
Format
File Size
Last Update
A55PETx firmware
2022
NIU
0.71 Mb
02/03/2022
A55CITx Firmware
2022
NIU
1.59 Mb
30/03/2022

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