- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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High resolution TPC based on optically readout GEM
摘要： Large granularity and high sensitivity commercial CMOS readout systems open the possibility of developing particle detectors with very interesting performance for different applications, from the search of rare and exotic events, such as dark matter directional candidates, to high quality neutron/ion/hadron beam monitor, mainly for medical applications. The gas scintillation mechanism was exploited for starting an R&D on large TPC-based detector, equipped with a Triple GEM amplification stage optically readout. By this approach, a 7 litre sensitive volume detector was built and tested. Space resolutions of 35 μm on the GEM plane (X,Y) and 100 μm on Z and energy measurements with a precision of about 25% were obtained. Analysis of the track shapes provides precious information allowing very good particle discrimination.
关键词： Micro-pattern Gas Detectors,GEM,Tracking detectors
更新于2025-09-09 09:28:46
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Development of the FTM technology for TOF-PET
摘要： Gas detector research focused in particular on the radiation induced processes leading to discharge breakdown led, thanks to advances in photolithography and micro-electronics, to the development of a family of resistant devices named Micro-Pattern Gas Detectors (MPGDs) [1]. The main features of the MPGDs are: a flexible geometry; a high rate capability (>MHz/cm2); an excellent spatial resolution (<μm); a good time resolution (5-10 ns); and a reduced radiation length. A new detector layout, named Fast Timing MPGD (FTM), has been recently proposed [2]. The FTM would combine both the high spatial resolution and high rate capability of the MPGDs while improving the time resolution with nearly two orders of magnitude to ～100 ps. This contribution studies the possibility to adapt the FTM technology for TOF-PET imaging.
关键词： Timing detectors,Micro-pattern Gas Detectors
更新于2025-09-09 09:28:46
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The Imaging X-ray Polarimetry Explorer (IXPE)
摘要： Recently selected by NASA as the next SMall EXplorer (SMEX) mission for a launch in 2021, the Imaging X-ray Polarimetry Explorer (IXPE) marks the renaissance of X-ray polarimetry, with the prospect of measuring linear polarization from tens of astronomical X-ray sources. IXPE will expand the X-ray view of the Universe by providing new and unique insight into our understanding of some of the most violent celestial objects, such as stellar and supermassive black holes and neutron stars. In this contribution we shall discuss the scientific prospects of the mission, as well as the status of the program, with particular emphasis on the development of the focal plane detectors sensitive to polarization.
关键词： Imaging,Micro-pattern gas detectors,GEM,X-ray,Polarimetry
更新于2025-09-09 09:28:46