Electronics for Silicon Photomultipliers

Read Out Systems

Electronics for Silicon Photomultipliers

Silicon Photomultipliers (SiPMs), detectors that constitute the most modern type of solid-state photodetectors, operate using a matrix of avalanche photodiodes known as pixels. Operating in Geiger-Muller regime and connected in parallel on a common Silicon substrate, SiPMs efficiently convert incoming photons into electrical signals.

In high-energy physics applications, CAEN’s electronic solutions address the dual requirements of a reliable power source and an efficient readout mechanism for SiPMs. Offering options covering both power supply and readout functionalities, our solutions are crafted to provide precision and adaptability for your research endeavors.

Electronics for Silicon Photomultipliers Models

A1423B

A1423B

  • Bandwidth: ~ 1.5 GHz (-3 dB)

  • Positive or negative input signals

  • Gain range: from +18 dB to +54 dB

  • Output voltage: ± 1V

  • Input and output impedance 50 Ω, SWR<1.5:1

  • Noise Figure: 7 dB @ 1 GHz

  • Up to 750 V (positive or negative) detector bias voltage
A1539

A1539

  • 12 / 24 / 32 independently controllable High Voltage channels

  • Output Voltage: 100 V

  • Output current: 10 mA

  • Available with Negative / Positive / Mixed Polarity

  • SHV / DB25 connectors

  • Floating Type: Common Floating Return

  • Low ripple

  • Under/over-voltage alert, overcurrent and max. voltage protection

  • Interlock logic for unit enable

  • Software Tool for easy channel management
A1540

A1540

  • 12 / 24 / 32 independently controllable High Voltage channels

  • Output Voltage: 100 V

  • Output current: 1 mA

  • Available with Negative / Positive / Mixed Polarity

  • SHV / DB25 connectors

  • Floating Type: Common Floating Return

  • Low ripple

  • Under/over-voltage alert, overcurrent and max. voltage protection

  • Interlock logic for unit enable

  • Software Tool for easy channel management
A1540H

A1540H

  • 12 / 24 / 32 independently controllable High Voltage channels

  • Output Voltage: 100 V

  • Dual range current:

    • High Power: 1 mA (1 nA monitor resolution)

    • High resolution: 0.1 mA (0.1 nA monitor resolution)

  • Available with Negative / Positive / Mixed Polarity

  • SHV / DB25  connectors

  • Floating Type: Common Floating Return

  • Low ripple

  • Under/over-voltage alert, overcurrent and max. voltage protection

  • Interlock logic for unit enable

  • Software Tool for easy channel management
A1702
Discontinued

A1702

  • Readout board for SiPM, tailored for Cosmic Rays Veto systems in Neutrino experiments.

  • Based on 32-channels WeeROC CITIROC ASIC

  • Coincidence of signals from each pair of adjacent even-odd channels

  • Provides bias voltage in the range of 20-90 V, individually adjustable for each of 32 SiPMs

  • Amplification and shaping of the SiPMs output pulse on each of 32 channels

  • Discrimination of shaped signal at configurable level from 0 to 50 SiPMs photo-electrons

  • Timing resolution down to 1 ns with stable external reference signals

  • Readout via 100 Mbps Ethernet, double ports for multiboard daisy-chain

  • ROOT-based readout software
A5202

A5202

  • 64-ch frontend unit for SiPM readout applications housing two Weeroc Citiroc-1A ASICs

  • Part of FERS-5200, the CAEN platform for the readout of large arrays of detectors (SiPM, MA-PMTs, Gas Tubes, Si detectors, …)

  • Onboard A7585D SiPM power supply for sensors biasing

  • Acquisition modes: Spectroscopy (PHA), Counting, Timing with ToT

  • Scalability and easy-synch: up to 128 cards (8192 channels) can be managed and synchronized by a single DT5215 Concentrator Board, thanks to the optical TDlink

  • Janus 5202 open source software available for board and DAQ control

  • Flexibility: a full range of adapters and cables for different kind of SiPMs and sensors remotization

  • Boxed FERS unit (DT5202) for desktop use or bare (A5202) for customizable mechanical frame
A7040

A7040

  • 48 independently controllable High Voltage channels

  • Output Voltage: 100 V

  • Output current: 1 mA

  • Available with Negative / Positive Polarity

  • DB37 connectors

  • Floating Type: Common Floating Return

  • Low ripple

  • Under/over-voltage alert, overcurrent and max. voltage protection

  • Interlock logic for unit enable

  • Software Tool for easy channel management
A7585D/DU

A7585D/DU

  • Single channel PCB mount High Voltage Power Supply

    • A7585D: SMD version

    • A7585DU: Through-Hole version

  • 20÷85 V (10 mA) output range

  • Suitable for large SiPM matrix

  • Analog and Digital Control (UART and I2C)

  • Very low ripple (<0.1 mVpp typical)

  • High resolution on voltage and current monitor

  • Programmable temperature compensation

  • Open-source C library for I2C interfacing of multiple devices available on GitHub repository

  • ZEUS Control Software for easy management of the module

  • Python Library available on GitHub repository

  • USB interface (A7585DU Only)
DT5202

DT5202

  • 64-ch frontend unit for SiPM readout housing two Weeroc Citiroc-1A ASICs

  • Part of FERS-5200, the CAEN platform for the readout of large arrays of detectors (SiPM, MA-PMTs, Gas Tubes, Si detectors, …)

  • Onboard A7585D SiPM power supply

  • Acquisition modes: Spectroscopy (PHA), Counting, Timing with ToT

  • Scalability and easy-sync: from a single standalone FERS unit for prototyping to many thousands of channels, with simple tree network structure. Up to 128 DT5202 units can be managed by a single DT5215 Concentrator Board, i.e. up to 8192 SiPM pixels

  • Flexibility: a full range of accessories for sensors remotization

  • Modularity: multiple FERS units can be distributed on large detector volume and managed by a DT5215 Concentrator board

  • Compactness: front-end cards with high channel density ASICs and effective connection to the detector backplane

  • Janus 5202 open source software available for board and DAQ control

  • Boxed FERS unit (DT5202) for desktop use or naked (A5202) for customizable mechanical frames
DT5215
New

DT5215

  • Concentrator board for multiboard management in FERS-5200, the CAEN platform for the readout of large arrays of detectors (SiPM, MA-PMTs, Gas Tubes, Si detectors, …).

  • Scalability: from a single standalone FERS unit for prototyping to many thousands of channels, with simple tree network structure.

  • Modularity: multiple FERS units can be distributed on large detector volume and managed by a single Concentrator board.

  • 8x TDlink for event data building, processing and formatting.

  • Easy-synch: one single optical link (TDlink) for data readout, slow control and boards synchronization.

  • Available also in single TDlink version (DT5216): supports up to 8 FERS units in daisy chain.
DT5550AFES
New

DT5550AFES

  • Multichannel Analog Frontend Board for SiPM biasing, signal preamplification and shaping

  • 20-85 V SiPM biasing

  • 400 ns shaping

  • Great input dynamic range (up to 6000 photoelectrons)

  • 64-channel Readout System kit available:

    • DT5550AFES Analog Frontend

    • 2 x DT5550 Readout System

    • Extension micro-coaxial cable with input connector for SiPM with simple pinout

    • SCI-Compiler license

  • Complete system for waveform digitization, imaging and spectroscopy

  • SiPM input and bias lines on a single connector with simple pinout to adapt to readout any kind of SiPM

  • Ideal for high-resolution spectroscopy and calorimetry

  • Radiation Tolerant system

  • Demo software provided for free with the 64-ch Readout System kit

  • Optional ready-to-use detector kit:

    • PCB equipped with 64-ch Hamamatsu SiPM matrix S13615-1050, directly compatible with DT5550AFES input connector

    • Dark box for SiPM board testing
DT5550W

DT5550W

  • 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
DT5702
Discontinued

DT5702

  • Readout board for SiPM, tailored for Cosmic Rays Veto systems in Neutrino experiments.

  • Based on 32-channels WeeROC CITIROC ASIC

  • Coincidence of signals from each pair of adjacent even-odd channels

  • Provides bias voltage in the range of 20-90 V, individually adjustable for each of 32 SiPMs

  • Amplification and shaping of the SiPMs output pulse on each of 32 channels

  • Discrimination of shaped signal at configurable level from 0 to 50 SiPMs photo-electrons

  • Timing resolution down to 1 ns with stable external reference signals

  • Readout via 100 Mbps Ethernet, double ports for multiboard daisy-chain

  • ROOT-based readout software
DT8031

DT8031

  • 8 independent channels in a Desktop case (110/220V AC Powered)

  • 100 V / 10 mA output range

  • Channels with either positive or negative polarity

  • BNC coaxial output connectors

  • Temperature probe input

  • Low Ripple

  • Under/over-voltage alert, overcurrent and max. voltage protection

  • Interlock logic for board enable and Individual channel kill

  • 50 nA Current monitor resolution (with x10 Imon-Zoom: 5 nA)

  • 2.8″ color touch screen display

  • Local and Remote control (USB2.0/Ethernet)

  • Software Tools for easy channel management
I-SPECTOR

I-SPECTOR

  • All-in-one detector and preamplification electronics for Gamma Spectroscopy

  • Based on a SiPM area up to  nearly 1.5 inch2

  • 20-80 V Integrated High Voltage for SiPM biasing

  • i-Spector PLUS (Coming Soon) version with embedded timing unit for coincidence and ToF measurements among multiple devices

  • OEM electronics or detector assembly

  • Assembly with CsI scintillator:

    • 24x24x30 mm3 (approx. 1x1x1.2 inch3)

    • 30x30x30 mm3 (approx. 1.2×1.2x 1.2 inch3)

  • Other assembly option available on request: NaI, BGO, LYSO, LaBr3 or any other compatible scintillator

  • Demountable mechanics to easily change crystal

  • Ethernet connection to PC

  • Web-based configuration and monitor interface

  • Compact form factor

    • Ø 60 mm, h 90 mm (OEM)

    • Ø 60 mm, h 135 mm (ASSEMBLY)
I-SPECTOR DIGITAL

I-SPECTOR DIGITAL

  • All-in-one detector, electronics and MCA for Gamma Spectroscopy

  • Web-based interface with spectrum analysis tools

  • Based on a SiPM area up to nearly 1.5 inch2

  • 20-80 V Integrated High Voltage for SiPM biasing

  • OEM electronics or detector assembly

  • Compact form factor:

    • Ø 60 mm, h 90 mm (OEM)

    • Ø 60 mm, h 135 mm (ASSEMBLY)

  • Assembly with CsI scintillator:

    • 24x24x30 mm3 (approx. 1x1x1.2 inch3)

    • 30x30x30 mm3 (approx. 1.2×1.2x 1.2 inch3)

  • Other assembly option available on request: NaI, BGO, LYSO, LaBr3 or any other compatible scintillator

  • Demountable mechanics to easily change crystal

  • Ethernet connectivity

  • C# and Python open-source libraries available
N8031

N8031

  • 8 independent channels in a 2U NIM module

  • 100 V / 10mA output range

  • Channels with either positive or negative polarity

  • BNC coaxial output connectors

  • Temperature probe input

  • Low Ripple

  • Under/over-voltage alert, overcurrent and max. voltage protection

  • Interlock logic for board enable and Individual channel kill

  • 50 nA Current monitor resolution (with x10 Imon-Zoom: 5 nA)

  • 2.8″ color touch screen display

  • Local and Remote control (USB2.0/Ethernet)

  • Software Tools for easy channel management
R8031

R8031

  • 8 or 16 independent channels in a 19″ rack unit (110/220V AC Powered)

  • 100 V / 10 mA output range

  • Channels with either positive or negative polarity

  • BNC coaxial output connectors

  • Temperature probe input

  • Low Ripple

  • Under/over-voltage alert, overcurrent and max. voltage protection

  • Interlock logic for board enable and Individual channel kill

  • 50 nA current monitor resolution (with x10 Imon-Zoom: 5 nA)

  • 2.8″ color touch screen display

  • Local and Remote control (USB2.0/Ethernet)

  • Software Tools for easy channel management
SP5600E

SP5600E

  • Photon detection: light distribution and single photon detection

  • Advanced Statistics

  • State-of-art sensor to explore the quantum world

  • A complete LabVIEW based software suite for remote control of the system and for data analysis

Easy-Scalable Readout System and Bias

Discover the seamless integration of bias and readout functionality with CAEN’s FERS systems for Silicon Photomultipliers (SiPMs). Designed to streamline your experimental setup, these systems offer a comprehensive solution, incorporating both bias voltage control and advanced readout chip technologies. Furthermore, the FERS systems stand as scalable platforms with the DT5215 Concentrator Board, enabling simultaneous control and synchronization of up to 128 boards through the TDLink protocol, providing unparalleled scalability to meet evolving research demands. Moreover, the FERS design facilitates user customization through the incorporation of a custom flange, ensuring compatibility with various matrices and accommodating individual user preferences.

  • 64 Ch FERS unit with Citiroc for a flexible SiPM readout, naked (A5202) or boxed (DT5202) units available
  • 64 Ch FERS unit with Radioroc and CERN picoTDC for high resolution timing, naked (A5204) or boxed (DT5204) units available

Advanced Development with Open FPGA: Exploring R&D Capabilities for SiPMs

The CAEN DT5550W stands as a versatile development and data acquisition (DAQ) platform, featuring a programmable FPGA tailored for reading WeeROC ASICs. This platform serves dual purposes, functioning both as an evaluation system for WeeROC ASICs and as a full-featured Acquisition System supporting a broad spectrum of SiPM detectors. Primarily designed as a development platform, the characteristics of the DT5550W make it particularly suitable for research and development (R&D), prototyping, and feasibility studies. This versatile module empowers users to explore and refine custom readout logic, ensuring seamless integration and efficient performance for a variety of applications. For enhanced flexibility, the DT5550W is compatible with the SCI-Compiler, a graphical tool for Windows capable to empowers users to create custom readout logic for available ASICs by generating VHDL firmware code using graphical blocks interconnected within the GUI. This approach significantly reduces development time, even for individuals who are not expert firmware designers

Compare SiPM Readout

A5202

A5204

DT5550W CIT

DT5550W PET

Channels

64

64

128/64

128/64/32

Scalability

DT5215 Concentrator board to manage and synchronize up to 128 boards

DT5215 Concentrator board to manage and synchronize up to 128 boards

Multiboard sync

Multiboard sync

Pulse Processing Functions

Spectroscopy mode Preamp + Shaper + Peak Sensing ADC Common trigger up to 100 kpcs Energy spectra and PHA list

Timing/Counting Preamp +Fast Shaper + Discr + TDC Independent trigger ToA/ToT list and histograms MCS mode

Spectroscopy mode Preamp + Shaper + Peak Sensing ADC Common trigger up to 100 kpcs Energy spectra and PHA list

Timing/Counting Preamp +Fast Shaper + Discr + TDC Independent trigger ToA/ToT list and histograms MCS mode

Spectroscopy mode Preamp + Shaper + Peak Sensing ADC Common trigger up to 30 kpcs Energy spectra and PHA list

Counting Preamp +Fast Shaper + Discr + TDC Independent trigger MCS mode

Spectroscopy mode Preamp + Shaper + Peak Sensing ADC Common trigger up to 30 kpcs Energy spectra and PHA list with timestamps

Spectroscopy

Dynamic range (@ SiPM gain 106)

1 to 2500 p.e.

1 to 2000 p.e.

1 to 2500 p.e.

1 to 3000 p.e.

Shaping time

12.5 to 87.5 ns

20 to 1200 ns

12.5 to 87.5 ns

25 to 100 ns

Timing resolution

0.5 ns LSB

3.125 ps LSB*

0.5 ns LSB

37 ps LSB

Counting

20 Mcps/ch

200 Mcps/ch

20 Mcps/ch

Bias

20 to 85 V @ 10 mA

20 to 85 V @ 10 mA

20 to 85 V @ 10 mA

20 to 85 V @ 10 mA

Readout Interface

TDlink + DT5215: USB 3.0, 1/10 GbE Direct: USB 2.0, 10/100 MbE

TDlink + DT5215: USB 3.0, 1/10 GbE Direct: USB 2.0, 10/100 MbE

USB3.0

USB3.0

Included software

Janus 5202

Janus 5204

DT5550W Readout SW

DT5550W Readout SW

SiPM Compatibility**

Single pixel

A5250/A5253 adapter A5260/A5261 remotization cables

A5250/A5253 adapter A5260/A5261 remotization cables

2.54mm header adapter

2.54mm header adapter

Hamamatsu S13361-3050AE-08

A5251 adapter A5260 remotization cable

A5251 adapter A5260 remotization cable

2x Onboard sockets Remotization kit available

2x Onboard sockets Remotization kit available

OnSemi ARRAYJ-60035-64P-PCB

A5254 adapter A5260 remotization cable

A5254 adapter A5260 remotization cable

X

X

OnSemi ARRAYC-60035-64P-PCB

A5254 adapter A5260 remotization cable

A5254 adapter A5260 remotization cable

X

X

(*) picoTDC intrinsic resolution is 3.125 ps. Radioroc resolution on output signal is 55 ps FWHM on a single p.e.

(**) for SiPM models not listed in the table, the user has to build his own custom PCB adapter

Front-End Asics & Test Boards

Discover the capabilities of CAEN’s Weeroc Readout chip line, a specialized series designed exclusively for SiPM signal processing. These high-performance readout chips offer a tailored solution to ensure precise and reliable data acquisition from SiPMs. Accompanying each Weeroc Readout chip, CAEN provides dedicated testboards, designed to facilitate seamless integration and testing.

Bias

CAEN provides tailored solutions for optimizing your SiPM bias requirements. Understanding the pivotal role of bias voltage in SiPM operation, our offerings aim to enhance sensitivity and precision in high-energy physics experiments. In this section, CAEN’s solutions for SiPM bias are shown, available in various formats to meet the diverse needs of our customers.

Single Channel – PCB Mount/Desktop

The modules A7585D/A7585DU and DT5485P are a compact desktop solution to provide stable and noiseless power supply for single and array/matrix SiPM detectors. These modules can be digitally controlled by UART, I2C or USB. Output voltage could be also controlled proportionally to an analog input, they can provide up to 10 mA and the output voltage could be regulated between 20V and 85V with a resolution of 1mV.
Single Channel Family​

Single Channel – PCB Mount/Desktop

The modules A7585D/A7585DU and DT5485P are a compact desktop solution to provide stable and noiseless power supply for single and array/matrix SiPM detectors. These modules can be digitally controlled by UART, I2C or USB. Output voltage could be also controlled proportionally to an analog input, they can provide up to 10 mA and the output voltage could be regulated between 20V and 85V with a resolution of 1mV.
Single Channel Family​

Up 16 Channel – Desktop/Rack Mount/NIM

The X8031 Power Supply modules offer adaptability in design, with options for Desktop, Rack Mount, or NIM configurations. Each channel in these modules is designed to deliver up to ±100V /10 mA, and is further enhanced with the inclusion of a temperature probe input, adding a layer of precision and control to their functionality.
• DT8031 – 8 Channel Desktop Programmable Power Supply
• R8031 – 8 or 16 Channel Rack Programmable Power Supply
• N8031 – 8 Channel NIM Programmable Power Supply

Learn How to Readout SiPMs

CAEN Educational SiPM Kits are designed for those seeking to master Silicon Photomultipliers. This comprehensive educational package provides hands-on experience in understanding SiPM operation, biasing, readout, and data analysis. The kit includes user-friendly materials, practical exercises, and step-by-step guides, making it an ideal resource for students, educators, and researchers eager to explore the potential of SiPM technology. Unlock the educational benefits of this kit as we empower the next generation of researchers in the fascinating world of high-energy physics.
SP5600E Educational Kit

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