CAEN digitizer

Model

Model	Energy resolution	Sampling rate
V1725	14-bit	250MS/s
V1730	14-bit	500MS/s
V1740	12-bit	62.5 MS/s

DPP firmware

Both V1725 and V1730 can be equipped with the PHA (pulse-height analysis) or PSD (pulse-shape decimation) firmware.

From the programming point of view, the board registers are very different for the two firmware.

required library

On Linux (Ubuntu 18.04+), two CAEN libraries are required to run the digitizers.

• CAENVMELib
• CAENComm

that would be enough for running the CAEN CoMPASS.

For custom programs, an additional library is needed

• CAENDigitizer

FSU DAQ

The FSU DAQ is based on BoxScore. The core is the digitizer class that directly controls and reads out the CAEN digitizer. The GUI of the DAQ uses CERN ROOT GUI elements.

The Goals for the DAQ are:

• support V1725, V1730, V1740 digitizers
• multi-thread readout and real-time time sorting (possibly events building)
• extendable to other digitizers and functionalities
• user-friendly (full GUI, limited terminal output)
• easy to maintain (avoid abstract coding and entirely objective programming)
• for Ubuntu 22.04 or equivalent
• binary output or root tree output

The Digitizer Classes

The Digitizer classes are based on the DigitizerClass.h/C. The derivative classes are DigitizerPHA.h/C and DigitizerPSD.h/C. The digitizer classes stores only the connection and board information. It provides an interface to better control the digitizer, for example, manipulate the bits for the control bit.