DT5790

The CAEN Mod. DT5790 is a complete digital acquisition system for scintillators and other detectors. It is ideally suited for Organic, Inorganic and Liquid Scintillators coupled to photodetectors like PMTs and SiPMs whose pulses can be directly accepted by the board.

In a compact desktop form factor, the DT5790 houses:

• 2x 250 MS/s and 12-bit waveform digitizer with single-ended analog inputs on BNC connectors. 2 Vpp of input dynamics and adjustable DC offset via a 16-bit DAC on each channel in the full range.

• 2x ±4 kV 3 mA (4 W max.) HV bias outputs on SHV connectors for detectors driving. HV polarity NEGATIVE, POSITIVE or MIXED selectable by ordering options.

• 2x ±12 V 100 mA and ±24 V 50 mA Low Voltage bias outputs on DB9 connectors for preamplifiers driving.

The DT5790 operates upon the DPP-PSD firmware, specially developed for Charge Integration and Pulse Shape Discrimination. DPP-PSD is based on an advanced on line Digital Dual Gate Charge Integration allowing an effective data analysis even at high count rate. It performs input signal baseline calculation, self-triggering and double-gate charge integration with programmable parameters, double integration of both prompt and total charge for Pulse Shape Discrimination and pedestal subtraction for energy calculation.

Thanks to the 2-input simultaneous acquisition, the DT5790 is able to manage coincidence and anti-coincidence between a pair of detectors, allowing the user, for example, to easily take advantage of background rejection or anti-Compton techniques.
The module has been designed to operate as a scalable multi-input multi-board acquisition system, offering synchronization capabilities. A CLK IN front panel connector is provided to synchronize the clocks from different boards, as well as digital I/Os can serve for trigger propagation and Start/Stop acquisition management.

Safety features allows the module to perform as a current generator and includes:

• Over Voltage / Under Voltage alarms.

• Overcurrent / Over Temperature alarms (Kill or Ramp selectable esc modes).

• Channel Inhibit on DB9 and dedicated BNC connectors, configurable logic by panel switch.

The DT5790 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 DT5790 boards can be connected in daisy chain to a single link of the A2818 PCI Controller or A4818 USB3-to-CONET adapter, while a maximum of 32 boards by the 4-link A3818 PCIe Controller.

Operating modes:

• Oscilloscope”: makes possible to acquire waveforms, either input signals or the outputs of the internal digital filters, for monitoring and parameters tuning.

• “List”: charge, PSD and time stamp are extracted from the pulses.

• “Pulse Shape Discrimination (PSD)”: histogram of the total charge (16k) and 2-D scatter plot of PSD parameter are built at software level.

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 and CAENDigitizer), 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.

• CoMPASS: Multiparametric DAQ Software for Physics Applications supporting CAEN digitizers, pulse processors and MCAs.