Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Development of Large Area Diamond Detectors for Time-of-flight Measurements of Relativistic Heavy Ions for the Super-FRS.
Author: Proceedings of The IX International Conference on Hypernuclear and Strange Particle Physics
Author: Josef PochodzallaPublisher: Springer Science & Business Media
ISBN: 3540763678
Category : Science
Languages : en
Pages : 400
Book Description
This volume contains the proceedings of the IX International Conference on Hypernuclear and Strange Particle Physics (HYP 2006). This conference series is devoted to the progress of our knowledge about strangeness flavor in hadron and nuclear physics. Besides the traditional topics such as hadron structure, hypernuclear spectroscopy and weak decay of hypernuclei, a particular focus of this conference was on the properties of strange mesons and their binding in nuclear systems.
Advanced Time-of-flight Diamond Detection Systems
Author: Ahmed Ali AlghamdiPublisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 107
Book Description
The radiation detection field has been rapidly growing in the recent three decades due to the Special Nuclear Materials (SNM) proliferation hazards. Monitoring and detecting SNM with high resolution has been a practical issue. Recently, Neutron Scatter Camera (NSC) addressed this issue by identifying the different SNM with high efficiency. However, the huge size of the detection system beside the poor resolution requires developing an alternative NSC. Two Diamond-based Neutron Scatter Camera (DNSC) systems were investigated. The two-diamond array demonstrated good energy resolution of reconstructing spectrum of multiple neutron sources. Moreover, the spectrum of 239PuBe source was reconstructed experimentally via the two-diamond array NSC. The measured spectrum agreed well with the peak of 3 and 10 MeV. On the other hand, the diamond array, in addition to its capability of spectroscopy, pinpointed several neutron sources. For instance, the simulated system could locate and identify a highly active 252Cf source ( 2.3*1010 n/s) placed 1 meter away within 6 hours.The Chi-Nu measurements started back in 2012 at Los Alamos National Lab to obtain more accurate data of fission neutrons. In this dissertation, a novel Double Time-of-Flight (DToF) detection system was utilized to investigate the capability of reconstructing the prompt fission neutrons spectra that were produced by the fast neutron irradiation of two fissile materials which coated a diamond detector. Unlike the Chi-Nu, DToF simulation measurements used only one type of detector (diamond detectors) for all neutron energy range. The simulation results represented good resolution but more accurate correction factors are needed for the low detection efficiency (≈3%) of the system. Protecting astronauts for future space missions from galactic cosmic rays (GCR) is an issue for NASA. Identifying the light ions that strike through the spaceship craft is the first goal to design a shielding material. To address this issue, a [delta]E/[delta]E detector was explored for the measurement of Minimum Ionizing Particles (MIPs) using the beam-line at the NASA Space Radiation Laboratory (NSRL). The measurements were analyzed by Geant4 simulation, which showed promising results in using a delta]E/[delta]E detector to define interacted isotopes.
Development of a Time of Flight Diamond Detector and Readout System for the TOTEM Experiment at CERN
Author: Edoardo BossiniUsing X-Rays to Test CVD Diamond Detectors for Areal Density Measurement at the National Ignition Facility
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 6
Book Description
At the National Ignition Facility (NIF), 192 laser beams will compress a target containing a mixture of deuterium and tritium (DT) that will release fusion neutrons, photons, and other radiation. Diagnostics are being designed to measure this emitted radiation to infer crucial parameters of an ignition shot. Chemical Vapor Deposited (CVD) diamond is one of the ignition diagnostics that will be used as a neutron time-of-flight detector for measuring primary (14.1 MeV) neutron yield, ion temperature, and plasma areal density. This last quantity is the subject of this study and is inferred from the number of downscattered neutrons arriving late in time, divided by the number of primary neutrons. We determine in this study the accuracy with which this detector can measure areal density, when the limiting factor is detector and electronics saturation. We used laser-produced x-rays to reproduce NIF signals in terms of charge carriers density, time between pulses, and amplitude contrast and found that the effect of the large pulse on the small pulse is at most 8.4%, which is less than the NIF accuracy requirement of ± 10%.
Diamond Detectors for Heavy Ion Measurements
Author: Recipes for High Resolution Time-of-flight Detectors
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 60
Book Description
The authors discuss the dynamics, construction, implementation and benefits of a time-of-flight (TOF) detector with count rates an order of magnitude higher and resolution three to four times better than that obtainable with a surface barrier detector. The propose use of design criteria for a time-of-flight detector is outlined, and the determination of a TOF detector's total relative timing error and how this value determines the mass resolution are illustrated using a graphical analysis. They present simulation and experimental examples employing light ions and discuss advantages and pitfalls of medium-energy heavy ion TOF spectrometry.
Author: Willi Lang
Author: 
Author: