Title :
Radiation hard imaging detectors based on diamond electronics
Author :
Girolami, Mark ; Galbiati, Arnaldo ; Salvatori, Stefano
Author_Institution :
Dept. of Phys., Univ. of Roma Tre, Rome, Italy
Abstract :
We report on novel radiation hard imaging detectors based on diamond electronics. The proposed detectors can be operated at room temperature and are able to detect deep UV photons, X-rays, gamma rays, charged particles and neutrons for a wide range of industrial and research applications as: particle tracking at CERN, beam conditions monitoring for synchrotrons and LINACS, radiotheraphy imaging, excimer laser beam diagnostics etc. State of the-art commercially available photon and particle beam imaging and position detectors are mainly based on silicon, despite its intrinsic limitations. Main limitation of silicon devices is in the analysis of high-power sources as high energy particle and photon beams: the maximum density of energy that can be transferred to the detector without radiation damage is quite low, and the detectors lifetime is limited. To limit radiation damage, a reduced signal to noise ratio and high leakage current, silicon detectors need to be cooled down and cannot operate at room temperature; moreover, silicon detectors are also forced to use attenuators and/or wavelength converters (i.e. fluorescent crystals), so introducing loss factors in terms of spatial resolution.
Keywords :
attenuators; diamond; position sensitive particle detectors; radiation hardening; readout electronics; silicon radiation detectors; wide band gap semiconductors; C; CERN; LINACS; VIS-IR radiation; X-rays; attenuators; charge carriers; charged particles; compact diamond-based radiation beam profiling system:; deep ultraviolet photons; diamond electronics; electron volt energy 14 MeV; electron volt energy 5.47 eV; excimer laser beam diagnostics; gamma rays; high leakage current; mobility; multistrip; particle beam imaging; particle beams detector; particle tracking; photon beam; photoresponse; pixel structures; position imaging detectors; radiation damage; radiation hard imaging detectors; radiation-hard photon detector; radiotheraphy imaging; read-out electronic circuitry; real-time beam profile reconstruction; saturation velocity; signal-to-noise ratio; silicon detectors; silicon device; synchrotrons; wavelength converters; wide bandgap semiconductor; Electron tubes; Monitoring; Radiative recombination;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE
Conference_Location :
Valencia
Print_ISBN :
978-1-4673-0118-3
DOI :
10.1109/NSSMIC.2011.6154117