Division of accelerators, cryogenics and magnetism

The seminar is divided into two presentations:

1) The MIMOTERA is a silicon pixel detector produced during the SUCIMA project [1] in the EC framework program 5. The main goal was the study of high granularity real time dosimetry of brachiterapy sources and beam quality control at hadron therapy machines. The detector has been qualified at different accelerator facilities  e.g. Namur (tandem accelerator), HIT (hadron therapy facility)[2], CERN (AD)[2,3] and JRC ISPRA (Cyclotron). In these days a 50mu thinned detector will be installed in the AEGIS experiment at CERN. Beams have been imaged by direct impact on the sensor surface and by the detection of secondary electrons emitted by a foil on the beam path [4,5].

2) Introduction on SiPM (Silicon Photon Multipliers) with an overview on the main characteristics and their application in different fields with The focus on two activities we were involved in:

MODES_SNM [5], an EC framework program 7 funded project in the field of homeland security. The MODES_SNM detector performs neutron/gamma discrimination using high pressure noble gas (4He) coupled with PMTs. A dedicated R&D steered the basic module redesign which allowed to replace the PMT with siPM[6].

Preliminary measurements of beam profiles using scintillating fibers coupled with Sipm. A proof of concept has been performed at CNAO (Pavia hadron therapy center)

[1] Nucl.Phys.B, 150 (2006), 308-312

[2] Radiation Measurements, 46 (2011), 1971-1973

[3] Hyperfine Interact, 213 (2012), 159-174

[4] IEEE-TNS, 52 (2005), 830-833

[5] www.modes-snm.eu

[6] IEEE-xplore, 978-1-4799-1047-2/13, DOI=10.1109/ANIMMA.2013.6727974 (2013)