Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userChAKRA : The high resolution charged particle detector array at VECC
72
0
0.0
(
0
)
Ask ChatGPT about the research
No Arabic abstract
A large 4$pi$ array of charged particle detectors has been developed at Variable Energy Cyclotron Centre to facilitate high resolution charged particle reaction and spectroscopy studies by detecting event-by-event the charged reaction products emitted in heavy ion reactions at energy $sim$ 10-60 MeV/A. The forward part ($theta sim pm $ $7^{0}$ - $pm 45^{0}$) of the array consists of 24 highly granular, high resolution charged particle telescopes, each of which is made by three layers [single sided silicon strip($Delta$E) + double sided silicon strip (E/$Delta$E) + CsI(Tl)(E)]of detectors. The backward part of the array consists of 112 CsI(Tl) detectors which are capable of detecting primarily the light charged particles (Z $le$ 2) emitted in the angular range of $theta sim pm $ $45^{0}$ - $pm 175^{0}$. The extreme forward part of the array ($theta sim pm $ $3^{0}$ - $pm 7^{0}$) is made up of 32 slow-fast plastic phoswich detectors that are capable of detecting light (Z $le$2) and heavy charged particles (3 $le$ Z $lesssim$ 20) as well as handling high count rates. The design, construction and characterization of the array has been described.
rate research
Read More
We developed a low-mass and high-efficiency charged particle detector for an experimental study of the rare decay $K_L rightarrow pi^0 u bar{ u}$. The detector is important to suppress the background with charged particles to the level below the signal branching ratio predicted by the Standard Model (O(10$^{-11}$)). The detector consists of two layers of 3-mm-thick plastic scintillators with wavelength shifting fibers embedded and Multi Pixel Photon Counters for readout. We manufactured the counter and evaluated the performance such as light yield, timing resolution, and efficiency. With this design, we achieved the inefficiency per layer against penetrating charged particles to be less than $1.5 times 10^{-5}$, which satisfies the requirement of the KOTO experiment determined from simulation studies.
Self Supporting isotopically enriched $^{116}$Sn (~380 microgram/cm$^2$), $^{124Sn}$ (~400 microgram/cm$^2$) and $^{112}$Sn (1.7 mg/cm$^2$), $^{120}$Sn (1.6 mg/cm$^2$) have been prepared using resistive heating and Mechanical rolling methods respectively at Variable Energy Cyclotron Centre(VECC). Preparation of enriched targets with small amount of material, selection of releasing agent for thin targets and separation of deposited material in solvent were among the several challenges while fabrication of thin targets .These targets has been successfully used in Nuclear Physics Experiments at VECC.
The design, construction and test of a charged particle detector made of scintillation counters read by Silicon Photomultipliers (SiPM) is described. The detector, which operates in vacuum and is used as a veto counter in the NA62 experiment at CERN, has a single channel time resolution of 1.14 ns, a spatial resolution of ~2.5 mm and an efficiency very close to 1 for penetrating charged particles.
An implementation of a novel of glass-based detector with fast response and wide detection range is needed to increase resolution for ultra-high energy cosmic rays detection. Such detector has been designed and built for the Horizon-T detector system at Tien Shan high-altitude Science Station. The main characteristics, such as design, duration of the detector pulse and calibration of a single particle response are discussed.
Silicon Drift Detectors, widely employed in high-resolution and high-rate X-ray applications, are considered here with interest also for electron detection. The accurate measurement of the tritium beta decay is the core of the TRISTAN (TRitium Investigation on STerile to Active Neutrino mixing) project. This work presents the characterization of a single-pixel SDD detector with a mono-energetic electron beam obtained from a Scanning Electron Microscope. The suitability of the SDD to detect electrons, in the energy range spanning from few keV to tens of keV, is demonstrated. Experimental measurements reveal a strong effect of the detectors entrance window structure on the observed energy response. A detailed detector model is therefore necessary to reconstruct the spectrum of an unknown beta-decay source.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
