نتایج جستجو برای: photomultiplier tube pmt

تعداد نتایج: 98320  

Journal: :AIP advances 2015
Jae Won Cha Elijah Y S Yew Daekeun Kim Jaichandar Subramanian Elly Nedivi Peter T C So

Multifocal multiphoton microscopy (MMM) improves imaging speed over a point scanning approach by parallelizing the excitation process. Early versions of MMM relied on imaging detectors to record emission signals from multiple foci simultaneously. For many turbid biological specimens, the scattering of emission photons results in blurred images and degrades the signal-to-noise ratio (SNR). We ha...

Journal: :Nuclear Instruments and Methods in Physics Research 2021

The Large High-Altitude Air Shower Observatory (LHAASO) is being built at Haizi Mountain, Sichuan province of China an altitude 4410 meters. One its main goals to survey the northern sky for very-high-energy gamma ray sources via ground-based water Cherenkov detector array (WCDA). 900 8-inch photomultiplier tubes (PMTs) CR365-02-1 from Beijing Hamamatsu Photon Techniques INC. (BHP) are installe...

Journal: :Optics letters 2016
Baoliang Ge Yifan Wang Yujia Huang Cuifang Kuang Yue Fang Peng Xiu Zihao Rong Xu Liu

What we believe is a novel method for improving confocal microscopy's resolution and contrast in 3D space is proposed. Based on a conventional confocal microscopy setup, we use an array detector composed of 32 photomultiplier tubes (PMTs) to replace one point-detector, where the location offset of each PMT caused a different effective point spread function (PSF). By applying array detection and...

2010
R. Abbasi Y. Abdou J. Adams J. A. Aguilar M. Ahlers K. Andeen J. Auffenberg S. W. Barwick K. Beattie S. Bechet M. L. Benabderrahmane P. Berghaus E. Bernardini D. Bertrand D. Z. Besson E. Blaufuss D. J. Boersma C. Bohm O. Botner M. Carson S. Cohen C. Colnard D. F. Cowen M. V. D’Agostino M. Danninger C. De Clercq O. Depaepe F. Descamps T. DeYoung J. Dreyer J. P. Dumm M. R. Duvoort J. Eisch P. A. Evenson O. Fadiran A. R. Fazely C. Finley R. Franke T. K. Gaisser J. Gallagher M. Geisler L. Gerhardt A. Goldschmidt T. Griesel A. Groß S. Grullon M. Gurtner A. Hallgren F. Halzen J. Haugen K. Helbing S. Hickford G. C. Hill A. Homeier K. Hoshina K. Hultqvist S. Hussain R. L. Imlay M. Inaba A. Ishihara J. Jacobsen K.-H. Kampert A. Kappes A. Karle N. Kemming P. Kenny J. Kiryluk N. Kitamura S. Knops G. Kohnen H. Kolanoski L. Köpke D. J. Koskinen T. Kowarik T. Krings G. Kroll K. Kuehn T. Kuwabara M. Labare H. Landsman R. Lauer D. Lennarz J. Lünemann J. Madsen P. Majumdar R. Maruyama H. S. Matis M. Matusik K. Meagher P. Mészáros

Over 5000 PMTs are being deployed at the South Pole to compose the IceCube neutrino observatory. Many are placed deep in the ice to detect Cherenkov light emitted by the products of high-energy neutrino interactions, and others are frozen into tanks on the surface to detect particles from atmospheric cosmic ray showers. IceCube is using the 10-in. diameter R7081-02 made by Hamamatsu Photonics. ...

ژورنال: سنجش و ایمنی پرتو 2018

Imaging and identifying materials with high atomic numbers and densities, especially radioactive materials, is one of the issues that have been especially considered in recent years. Due to some limitations in conventional and old imaging techniques, finding an alternative method is very important. The cosmic muons with an infinite source are one of the sources that have been recently studied f...

2001
B. Erjavec

Recently, a new generation of compact photomultipliers exhibiting high sensitivity, fast time response, extremely low background and extended dynamic range has been introduced. The electron multiplication is enabled by a high-gain and extremely low-background, closed-end, channel electron multiplier serving also as a body of the new mini electron tube. By preventing ultra-fine leaks by the intr...

2001
Keith Rielage

The performance of a multianode photomultiplier tube (MAPMT) with 64 anodes coupled to scintillating fibers has been examined. Such a detector system can be used in a pairproduction gamma-ray telescope as well as in other applications. The characteristics of these tubes (Hamamatsu R5900-00-M64) are presented including single photoelectron sensitivity, electrical and optical cross-talk, and dark...

2001

Light falling on a photodetector produces an output current that fluctuates. The noise in this signal arises from two sources: randomness in the photon arrivals and randomness in the carrier multiplication process intrinsic to the photodetector. A general formula is derived for the variance of the photodetector output current in terms of parameters characterizing these two sources of randomness...

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