A programmable multichannel antialiasing filter for the CUORE experiment

作者：Arnaboldi C; Cariello M; Di Domizio S; Giachero A^*; Pessina G

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2010, 617(1-3): 327-328.

DOI：10.1016/j.nima.2009.09.023

• Double beta decay
• Bolometers
• CUORE
• Low-pass filter
• Bessel-Thomson
• Optical coupled

The first prototype of antialiasing filter for the CUORE experiment is a board that accommodates 12 independent channels. Each channel is an active six-pole Bessel-Thomson low-pass filter (LPF) with a roll-off of 120 dB/decade. In order to adapt the bandwidth to every detector, the filtering frequency can be selected independently for every channel by a remote control between four possible values (8, 12, 16 or 20 Hz). The board is equipped with an ARM microcontroller which communicates with the on-board peripherals via I2C synchronous serial bus and with the remote control via CAN-bus. Important features are the low-cost, the compact realization and the capability to perform diagnostic routine remotely.