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DT5780

Dual Digital Multi Channel Analyzer (HV & Preamplifier PS) - Desktop

Features

  • Dual Independent 16k Digital MCA
  • Suited for high resolution digital nuclear Spectroscopy
  • Fully controlled by the MC2 Analyzer and CoMPASS Software
  • Selectable Input Dynamic Range and adjustable Digital Fine Gain
  • 2 HV power supply outputs available in 3 options: ±5 kV/300 μA, ±500 V/3 mA or ±4 kV 3 mA
  • 2 DB9 connectors for preamplifiers power supply (±12 V, ±24 V)
  • HV Inhibit input
  • Features DPP-PHA firmware for energy and time stamp calculation
  • Digital oscilloscope function for an easy setup and signal monitoring
  • Suited for high count rate applications
  • USB and Optical Link communication interfaces
  • Drivers, libraries and API for Windows and Linux 32/64-bit

Overview

The CAEN Mod.DT5780 is a compact desktop system integrating 2 Independent 16k Digital MCA and featuring HV/Preamp capabilities for digital nuclear Spectroscopy. It is ideally suited for high energy resolution detectors, such as HPGe, connected to a Charge Sensitive Preamplifier (CSP), but it can also properly work with PMT-based detectors like NaI, providing an exponential tail of at least few hundreds of ns.

DT5780SD version has been designed specifically for Diamond and Silicon detectors coupled with a CSP, while DT5780SC is suited for Scintillators. All version houses:

  • 2x 100 MS/s 14-bit waveform digitizer (based on 724 series) on single-ended inputs with BNC connectors, featuring 4-step software configurable input range and adjustable DC offset via a 16-bit DAC on each input in the full range.
  • 2x ±12 V 100 mA and ±24 V 50 mA bias outputs for preamplifiers power supply through DB9 connectors.
  • 2 x HV bias outputs on SHV connectors. Output inhibit configuration logic selectable through dedicated external switches. NEGATIVE, POSITIVE or MIXED HV polarity selectable by ordering options. Available the following versions:
    • DT5780: ±5 kV 300 μA
    • DT5780SD: ±500 V 3 mA
    • DT5780SC: ±4 kV 3 mA (4W limited)

DT5780, DT5780SD and DT5780SC are equipped with a DPP-PHA Firmware, that is a Digital Pulse Processing algorithm making the board a spectroscopy acquisition system providing energy (i.e. pulse height) and timing information as well as portions of the waveform and other traces for the fine tuning of the PHA settings.

Thanks to its two independent inputs of simultaneous acquisition, the module is able to manage coincidences and anticoincidence between a pair of detectors, allowing the user, for example, to easily take advantage of background rejection or anti-Compton techniques.
Multiple Dual Digital MCA boards can be synchronized to a common external clock working as a scalable multi-input, multi-board acquisition system.

The module houses USB 2.0 and Optical Link interfaces. USB 2.0 allows data transfers up to 30 MB/s. The Optical Link supports transfer rate of 80 MB/s and offers Daisy-chain capability. Therefore, it is possible to connect up to 8/32 MCA modules to a single Optical Link Controller (Mod. A5818/A4818).

Operating modes:
  • “Pulse Height Analysis”: pulse height histogram (1k-2k-4k-8k-16k) built at software level.
  • “List”: pulse height and time stamp for each event.
  • “Oscilloscope”: input and internal filters waveforms.
Safety Features:
    • Overvoltage/Undervoltage alarms
    • Overcurrent/Overtemperature alarms (Kill or Ramp selectable esc modes)
    • Channel Inhibit on DB9 and dedicated BNC connectors, configurable logic by panel switch
    • Voltage limit, Vmax, software selectable with 20V resolution for DT5780 and DT5780SC models, 2V resolution for DT5780SD models1

1 Note: for HV firmware revisions less than 2.2, Vmax resolution for DT5780SD is 20V.

Software available (Windows and Linux):

CAEN provides drivers for all the different types of physical communication channels, a set of C and LabView libraries (CAENComm, CAENDigitizer, CAENDPP ), demo applications and utilities:

  • CAENUpgrader: tool that allows the user to update the firmware of the digitizers, change the PLL settings, load, when requested, the license for the pay firmware and other utilities.
  • MC²Analyzer Control Software: Digital MCA Data Acquisition and Analysis Software designed for CAEN Digital Multi Channel Analyzers and Digitizers running Pulse Height Analysis (Windows only).
  • CoMPASS: Multiparametric DAQ Software for Physics Applications designer for CAEN Digitizers running Pulse Shape Discrimination and Pulse Height Analysis, CAEN Pulse processors and MCAs.

Technical Specifications

Mechanical
Dimensions
154 W x 50 H x 164 L mm³ (without connectors)
154 W x 50 H x 194 L mm³ (including connectors)
Weight
950 g
Analog Input

Input Features

  • BNC connector
  • Single-ended, DC coupled
  • Impedance: 1 kΩ
  • Positive and negative signals accepted
  • Programmable 4-step analog coarse gain (x1, x3, x7, x16) corresponding to 9.5Vpp-3.7Vpp-1.4Vpp-0.6Vpp ranges
  • Bandwidth: DC to 40 MHz – Programmable DC offset adjustment on each input in the full scale range

Number of Inputs: 2

ADC

Resolution: 14 bits
Sampling rate: 100 MS/s simultaneously on each channel

Digital Signal Processing
  • Trapezoidal filter for the energy calculation with adjustable rise time in the range 0 – 10µs and flat top in the range 0 – 5 µs
  • Manual and automated trigger threshold adjustment
  • Manual and automated Pole-Zero cancellation; decay time up to 6.5 ms
  • Digital decimation in steps of 2-4-8 allows to extend the time parameters range
  • Digital fine gain from x1 to x10 in steps of 0.01
  • Pile-up rejection and Live Time correction
  • Baseline restorer with programmable averaging
  • Trigger and Timing filter based on integrative-derivative component
  • Time Stamp: 10 ns resolution, 31 bit and rollover tracking event
  • Adjustable moving average low pass filter to reduce the high frequency noise
Preamplifier Power Supply
Preamp Features

  • DB9 connector
  • ± 12 V, 100 mA output
  • ± 24 V, 50 mA output
  • Output voltage tolerance: 2%
  • Voltage ripple < 5 mVpp
Extra Features

  • Aux. analog input: 0 ÷ 10 V
  • Ext. input for detector’s temperature readout
Preamp Outputs

2

High Voltage Power Supply

HV Features

Vset
Iset
Vset, Vmon resolution
Iset, Imon resolution
Ripple (20 ÷ 1000 Hz) Typ
Ripple (20 ÷ 1000 Hz) Max
Ripple (1 ÷ 20000 kHz) Typ
Ripple (1 ÷ 20000 kHz) Max

DT5780

  • 5 kV
  • 300 μA
  • 0.1 V
  • 10 nA
  • < 8 mVpp
  • < 10 mVpp
  • < 2 mVpp
  • < 5 mVpp

DT5780SD

  • 500 V
  • 3 mA
  • 0.01 V
  • 50 nA
  • < 3 mVpp
  • < 5 mVpp
  • < 2 mVpp
  • < 5 mVpp

DT5780SC

  • 4 kV
  • 3 mA
  • 0.1 V
  • 50 nA
  • < 4 mVpp
  • < 10 mVpp
  • < 2 mVpp
  • < 5 mVpp

HV Outputs

  • 2
  • SHV connector
  • HV polarity configurable by ordering option
  • User configurable Ramp-Up/Ramp-Down rates independently for each channel: 1÷ 500 V/s range for DT5780 – DT5780SC, and 1÷100 V/S for DT5780SD, in steps of 1 V/s
  • User configurable HV parameters independently for each channel

Safety Features

  • OverVoltage/UnderVoltage alarms
  • Overcurrent/OverTemperature alarms (Kill or Ramp selectable exit modes)
  • Channel Inhibit on DB9 and dedicated BNC connectors, configurable logic by panel switch
Operating Modes
  • Pulse Height Analysis (PHA): pulse height histogram (1k-2k-4k-8k-16k) built at software level
  • List mode: pulse height and time stamp for each event
  • Signal Inspector: input and internal filters waveforms
Trigger Modes
  • Uncorrelated: each channel operates independently (based on channel self-trigger)
  • Correlated: coincidence/anticoincidence among channels and/or an external trigger (TRG-IN)
  • External: channels are triggered by external trigger only (TRG-IN)
Front Panel Digital I/O
CLK-IN (AMP Modu II)

AC coupled differential Input Clock: LVDS, ECL, PECL, LVPECL, CML (single ended NIM/TTL available by orderable cable); Jitter < 100ppm requested; can be used as external clock reference for single board or to synchronize the clocks of multiple boards, provided through a Fan In.

GPO (LEMO)

General Purpose Output: NIM/ TTL, Zin = 50 Ω
Can be used to propagate the global trigger in multi-board synchronization (in combination with TRG-IN), as output register or Run ON/OFF status.

GPI (LEMO)

General Purpose Input: NIM/TTL, Zin = 50 Ω
Can be used as SYNC/START in multi-board synchronization or Run ON/OFF Control.

TRG-IN (LEMO)

External Trigger Input: NIM/TTL, Zin = 50 Ω
Can be used to force the event acquisition from all the channels of the board, to gate/veto the individual channel triggers, or to propagate the common trigger in multi-board synchronization (in combination with GPO).

Communication Interface

Optical Link: CAEN CONET proprietary protocol Up to 80 MB/s transfer rate Daisy chain capability: it is possible to connect up to 8 or 32 ADC modules to a single Optical Link Controller (A2818 or A3818 respectively)

USB: USB 2.0 compliant Up to 30 MB/s transfer rate

Firmware

Firmware can be upgraded via USB/Optical Link

Software

Fully controlled by CoMPASS and the MC² Analyzer spectroscopy Software
For developers: general purpose C libraries with demo samples available

Power Requirements
Operating Supply Voltage

+12 VDC ± 10%

Consumptions (@ +12 VDC)

3.3 A (Typ.) for DT5780 (± 10% tolerance)
3.5 A (Typ.) for DT5780SD and DT5780SC (± 10% tolerance)

The module is powered by external AC/DC stabilized power supply included in the kit (12 VDC, 45 W)

Environmental

Operational Conditions
0 – 50°C Temperature Range – EMC compliant

Compare

Compare with Multi Channel Analyzers.

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Accessories

A317
Cable assembly for Clock distribution 3-pin AMPMODU IV female terminations – 18 cm / 25cm
A318
Adapter for Clock signal FISCHER S101A004 male to 3-pin AMPMODU IV female – 10 cm
A387
Input Filter cable BNC female to BNC male – 25 cm
DT4700
Clock Generator and FAN-OUT
A386
AC coupler BNC female to BCN male

Ordering Options

Code Description
WDT5780SDXMA DT5780SDM - Dual Digital MCA - 1 HVPS +500V/3mA, 1 HVPS -500V/3mA, 2 LVPS ±12V/100mA ±24V/50mA   RoHS
WDT5780SDXNA DT5780SDN - Dual Digital MCA - 2 HVPS -500V/3mA, 2 LVPS ±12V/100mA, ±24V/50mA   RoHS
WDT5780SDXPA DT5780SDP - Dual Digital MCA - 2 HVPS +500V/3mA, 2 LVPS ±12V/100mA, ±24V/50mA   RoHS
WDT5780XMAAA DT5780M - Dual Digital MCA - 1 HVPS +5kV/300uA, 1 HVPS -5kV/300uA, 2 LVPS ±12V/100mA, ±24V/50mA   RoHS
WDT5780XNAAA DT5780N - Dual Digital MCA - 2 HVPS -5kV/300uA, 2 LVPS ±12V/100mA, ±24V/50mA   RoHS
WDT5780XPAAA DT5780P - Dual Digital MCA - 2 HVPS +5kV/300uA, 2 LVPS ±12V/100mA, ±24V/50mA   RoHS
WDT5780SCXMA DT5780SCM - Dual Digital MCA - 1 HVPS +4kV/3mA, 1 HVPS -4kV/3mA, 2 LVPS ±12V/100mA ±24V/50mA   RoHS
WDT5780SCXNA DT5780SCN - Dual Digital MCA - 2 HVPS -4kV/3mA, 2 LVPS ±12V/100mA, ±24V/50mA   RoHS
WDT5780SCXPA DT5780SCP - Dual Digital MCA - 2 HVPS +4kV/3mA, 2 LVPS ±12V/100mA, ±24V/50mA   RoHS

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