An eight-channel, high-performance digital pulse processor, the DPP3, is being developed for use with both multi-detector radioxenon detection systems and with the temporal gamma-ray spectroscopy system. The DPP3 has two parts: an analog front-end PCB and the FPGA module. Each channel on the analog front-end PCB has an adjustable voltage offset, and a Nqyuist filter leading to a 14-bit, 125 MHz 8-channel ADC, which has a 2-lane LVDS serial output. The ADC outputs, as well as a 24-pin GPIO header, are connected to the FPGA module via FPGA mezzanine connector (FMC). The FPGA module hosts a Xilinx Kintex-7 high-performance FPGA and a high-speed USB 3.0 interface to a PC. Pulse processing for all eight channels will take place in the FPGA, allowing full control over processing techniques and implementation.

 

Temporal Gamma-ray Spectroscopy

The 8-channel DPP3, designed and developed in-house and utilized for pulse processing

 

DPP3 Analog Scheme

DPP3 Schematic