supported by the National Natural Science Foundation of China(Nos.61534005,11475025 and 11375029)
The silicon photomultiplier(SiPM) with epitaxial quenching resistor(EQR) is an emerging and developing technology that has recently attracted the interest from the research community. It has characteristics of a conti...
This paper proposes two optimal designs of single photon avalanche diodes(SPADs) minimizing dark count rate(DCR). The first structure is introduced as p^+/pwell/nwell, in which a specific shallow pwell layer is added ...
Pursuing small critical dimensions(i.e.14 nm or below)and high integration bring us lots of physical defects causing low yield and functionality failures for foundries.Under this circumstance,inspection,metrology and ...
BACKGROUND: Cancer is the leading cause of death worldwide. The application of biophotonics for diagnosing precancerous lesions is a major breakthrough in oncology and is associated with the expression of clastogenic...
supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB05040200);the National Natural Science Foundation of China (Grant Nos. 91644107, 61575206, 41305139, 61108031)
An OH radical measurement instrument based on Fluorescence Assay by Gas Expansion(FAGE)has been developed in our laboratory.Ambient air is introduced into a low-pressure fluorescence cell through a pinhole aperture ...
The service provided by the GC(Gamma Cameras)in the Nuclear Medicine departments fails because of their breakdown,generally due to the associated electronics and not to the physical detection components.For this reaso...
supported by the National Natural Science Foundation of China(Nos.11574026 and 11274037);the Program for New Century Excellent Talents in University,MOE of China(No.NCET-12-0765);the Foundation for the Author of National Excellent Doctoral Dissertation,China(No.201236)
We demonstrate an ultralow-noise single-photon detection system based on a sensitive photomultiplier tube(PMT) with precise temperature control, which can capture fast single photons with intervals around 10 ns.By i...
supported by the Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX2-YW-N27);the CAS Center for Excellence in Particle Physics(CCEPP)
The water Cherenkov detector array(WCDA) is an important part of the large high-altitude air shower observatory(LHAASO),which is in a research and development phase.The central scientific goal of LHAASO is to explore ...
Supported by National Natural Science Foundation of China(10935005,10945002,11275107,11175099);Major State Basic Research Development Program(2010CB833006)
The China Dark Matter Experiment (CDEX) Collaboration will carry out a direct search for weakly interacting massive particles with germanium detectors. Liquid argon will be utilized as an anti-Compton and cooling ma...
Supported by in part by Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP200800031071);National Natural Science Foundation of China (No. 10975086);the National High Technology Research and Development Program (863 Program) of China (No. 2006AA020802)
The position decoding accuracy and the spatial resolution of positron emission tomography detectors are greatly influenced by the performance of the two-dimensional position map,including the gain uniformity of photom...