DT5780

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:

• CAENToolbox:GUI-based utility allowing users to update the firmware of digitizers, modify PLL settings, load licenses for paid firmware (when required), and access other useful features.

• CoMPASS: Multiparametric DAQ Software for Physics Applications designer for CAEN Digitizers running Pulse Shape Discrimination and Pulse Height Analysis, CAEN Pulse processors and MCAs.