This work is concerned with the design of a readout chip for application to experiments at the next generation X-ray Free Electron Lasers (FEL). The ASIC, named PixFEL Matrix (PFM2), has been designed in a 65 nm CMOS technology and consists of 32 × 32 pixels. Each cell covers an area of 110 × 110 μm2 and includes a low-noise charge sensitive amplifier (CSA) with dynamic signal compression, a time-variant shaper used to process the preamplifier output signal, a 10-bit successive approximation register (SAR) analog-to-digital converter (ADC) and digital circuitry for channel control and data readout. Two different solutions for the readout channel, based on different versions of the time-variant filter, have been integrated in the chip. Both solutions can be operated in such a way to cope with the high frame rate (exceeding 1 MHz) foreseen for future X-ray FEL machines. The ASIC will be bump bonded to a slim/active edge pixel sensor to form the first demonstrator for the PixFEL X-ray imager. This work has been carried out in the frame of the PixFEL project funded by Istituto Nazionale di Fisica Nucleare (INFN), Italy.

PFM2: A 32 × 32 processor for X-ray diffraction imaging at FELs

MANGHISONI, Massimo;FABRIS, LORENZO;RE, Valerio;TRAVERSI, Gianluca;
2016-11-01

Abstract

This work is concerned with the design of a readout chip for application to experiments at the next generation X-ray Free Electron Lasers (FEL). The ASIC, named PixFEL Matrix (PFM2), has been designed in a 65 nm CMOS technology and consists of 32 × 32 pixels. Each cell covers an area of 110 × 110 μm2 and includes a low-noise charge sensitive amplifier (CSA) with dynamic signal compression, a time-variant shaper used to process the preamplifier output signal, a 10-bit successive approximation register (SAR) analog-to-digital converter (ADC) and digital circuitry for channel control and data readout. Two different solutions for the readout channel, based on different versions of the time-variant filter, have been integrated in the chip. Both solutions can be operated in such a way to cope with the high frame rate (exceeding 1 MHz) foreseen for future X-ray FEL machines. The ASIC will be bump bonded to a slim/active edge pixel sensor to form the first demonstrator for the PixFEL X-ray imager. This work has been carried out in the frame of the PixFEL project funded by Istituto Nazionale di Fisica Nucleare (INFN), Italy.
nov-2016
Manghisoni, Massimo; Fabris, Lorenzo; Re, Valerio; Traversi, Gianluca; Ratti, Lodovico; Grassi, Marco; Lodola, Luca; Malcovati, Piero; Vacchi, Carla; Pancheri, Lucio; Benkechcache, Mohamed El Amine; Dalla Betta, Gian Franco; Xu, Hesong; Verzellesi, Giovanni; Ronchin, Sabina; Boscardin, Maurizio; Batignani, Giovanni; Bettarini, Stefano; Casarosa, Giulia; Forti, Francesco; Giorgi, Marcello; Paladino, Antonio; Paoloni, Eugenio; Rizzo, Giuliana; Morsani, Fabio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/79518
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