8 research outputs found
Design of an innovative beam monitor for particle therapy for the simultaneous measurement of beam fluence and energy
Design of an innovative beam monitor for particle therapy for the simultaneous measurement of beam fluence and energy
Development of a front-end electronics for an innovative monitor chamber for high-intensity charged particle beams
A multi-gap ionization monitor chamber has been
developed by INFN and Torino University, for monitoring of
high intensity pulsed charged particle beams. The read-out
of the chamber is based on a 64-channel ASIC, designed in
CMOS 0.35μm technology which features for each channel
an independent current-to-frequency converter followed by a
synchronous counter. The chip was designed for connecting each
channel to a different detector element. However, high beam
intensities may lead to an input current above the saturation
level of a single channel. A novel readout has been tested where
all the input channels of the chip have been connected in parallel
to the same detector element allowing to reach 64-times higher
input current with only a modest deterioration of the resolution.
Results will be presented in terms of linearity and noise, and will
be compared to a simulation where the chip is modeled as a set
of independent and uncorrelated channels
A simple method to increase the current range of the TERA chip in charged particle therapy applications
The development of the next generation of accelerators for charged particle radiotherapy aims to reduce
dimensions and operational complexity of the machines by engineering pulsed beams accelerators. The
drawback is the increased difficulty to monitor the beam delivery. Within each pulse, instantaneous
currents larger by two to three orders of magnitude than present applications are expected, which would
saturate the readout of the monitor chambers. In this paper, we report of a simple method to increase by
almost two orders of magnitude the current range of an Application Specific Integrated Circuit chip
previously developed by our group to read out monitor ionization chambers.
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