نتایج جستجو برای: cherenkov counter
تعداد نتایج: 42887 فیلتر نتایج به سال:
In order to fully exploit the physics potential of the ILC, it will be necessary to measure (and control) beam parameters to a permille level precision. In case of the beam polarisation, this can only be achieved with dedicated high energy Compton polarimeters and by improving the detector linearity, as well as the calibration of the analyzing power. This note summarises results of an early tes...
The research presented in this paper is aimed towards investigating the feasibility of using a wavelength-shifter as sensitive surface for the detection of Cherenkov light. Thereto an experimental setup was used in conjunction with a Geant4 simulation of the setup. An extensive calibration allowed to unambiguously detect Cherenkov radiation and compare efficiencies between different measurement...
The DIRC is a totally internally reflecting Cherenkov imaging detector proposed for particle identification at the asymmetric e+e− B factories. First test results from a conceptual prototype using cosmic muons are reported. The photo-electron yield and the single Cherenkov photon resolution at various track dip angles and positions along the radiator bar have been measured. The results are cons...
The NA62 experiment at CERN aims at the very challenging task of measuring with 10% relative error the Branching Ratio of the ultra-rare decay of the K+ into π+νν̄ , which is expected to occur only in about 8 out of 1011 Kaon decays. This will be achieved by means of an intense hadron beam, an accurate kinematical reconstruction and a redundant veto system for identifying and suppressing all spu...
We describe the features of the stereoscopic approach in the imaging atmospheric Cherenkov technique, and discuss the performance of future low threshold telescope arrays.
The Belle II experiment at the SuperKEKB aims collecting 50 times more data than its predecessor Belle. One of key components in is particle identification (PID), especially separation kaons and pions. In spectrometer, a proximity focusing ring imaging Cherenkov detector using aerogel as radiator (ARICH) equipped for PID forward endcap. this counter, total 420 hybrid avalanche photo-detectors (...
For over 80 years of research, the conventional description free-electron radiation phenomena, such as Cherenkov radiation, has remained unchanged: classical three-dimensional electromagnetic waves. Interestingly, in reduced dimensionality, properties are predicted to fundamentally change. Here, we present first observation surface waves, wherein free electrons emit narrow-bandwidth photonic qu...
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