Preliminary Study Of A Large Field Of View Imaging Atmospheric Cherenkov Telescope

The main content of this paper is an exploration to a wide field of view ImagingAtmospheric Cherenkov Telescope(IACT), based on it has narrow field of view(FoV),trying and finding a wide field of view,better angular resolution and cheap ImagingAtmospheric Cherenkov Telescope(IACT)would be very meaningful. In this paper, iwill analysea wide field of viewImaging Atmospheric Cherenkov Telescope in theexperimental stage of exploration to study.Imaging Atmospheric Cherenkov Telescope has been proven that it has a goodperformance in the observation of high-energy gamma rays including energyresolution, angular resolution and to identify cosmic ray background. However, dueto the small view field, it’s difficult to observe high-energy gamma-ray burst with thecurrent IACT. However, to detecting the flashes of the gamma rays associated withextremely energetic explosions, a telescope with large field of view (FOV) is needed,good angular resolution and background distinguish is secondary. Thus, the study ofImaging Atmospheric Cherenkov Telescope with a large field has an significancemeaning in the observations of high-energy gamma ray astronomy. In this paper i willuse a spherical shell filled with high purity water to study the a Imaging AtmosphericCherenkov Telescope ’s large field of view (FOV).Water lens could meet the needs of the large field of view, but before using it in theobservations of high-energy gamma astronomical,we need do a series of capability testtointensive study on it. The main research of this paper is use ZEMAX simulationimaging and experimental imaging capability. ZEMAX simulation include parallellight focuse spot size and simulation of the paraxial object imaging. Parallel lightfocuse spot size has a decisive role in the selection of the light detection device, thequality of imaging related to water lens optical resolution.The experiment use photomultiplier tube as the light detecting device, theexperimental conditions depend on the basic performance of the photomultiplier tube. To understand the working conditions and the basic performance of PMT is the firststep in the water lens measurement experiment. The measurement of singlephotoelectron peak and the gain curve are preparation must be completed. To do theWater lens experiment, by measuring the transmittance of the water lens, themeasurement of the muon signal, in-kind imaging results, and so on.We can start thepreliminary study of wide-angle atmospheric Cherenkov imaging telescope.This paper summarizes the problems discovered during the experiment,for example,tomake a large spherical shell is difficult, imaging with spherical aberration, and soon.We try to find the corresponding improvement program.Such as we replacewith,because making is easier than large spherical shell.If the FoV is constant, thelarge spherical crown can eliminate the spherical aberration by Optimizing pupillaryaperture,improving the quality of imaging.We will measure the spherical crown inexperiment,and continue to study Imaging Atmospheric Cherenkov Telescope. It willbe applied to observations of the gamma astronomical.