RELATIVISTIC PARTICLE IDENTIFICATION BY dE/dx: THE FRUITS OF EXPERIENCE WITH ISIS
نویسنده
چکیده
The experience of ten years of studying dE/dx is summarised. First, a helpful, if qualitative, picture of the electromagnetic field of a relativistic particle passing through a medium is discussed. Second, the salient steps in a rigorous calculation of dE/dx are outlined. Results of calculations for a variety of gases and configurations are given and the weakness of the calculation is pointed out. In the third section the practical experience gained from the ISIS project is discussed. The systematic effects that have been overcome are listed and the status and successes achieved with ISIS1 and ISIS2 to date are described.
منابع مشابه
Accurate Fruits Fault Detection in Agricultural Goods using an Efficient Algorithm
The main purpose of this paper was to introduce an efficient algorithm for fault identification in fruits images. First, input image was de-noised using the combination of Block Matching and 3D filtering (BM3D) and Principle Component Analysis (PCA) model. Afterward, in order to reduce the size of images and increase the execution speed, refined Discrete Cosine Transform (DCT) algorithm was uti...
متن کاملParticle Identification with a Fine Sampling Ionization
Introduction charge collection) of Q 104. The drift field was chosen to give an electron drift velocity of 1 cm/usec. %1/5 the saturated velocity in this gas mixture. The volume of uniform field (adequate for longitudinal drift measurenents of dE/dx) extends to within +3 mm of the sense plane and +l mm of the cathode planes. Hence, in principle, 80% of the track length through a chamber of this...
متن کاملdE/dx PROTOTYPE TEST*
A small prototype of a multiwire dE/dx detector was tested in SLAC's test beam. The basic concept of the detector was similar to the JADE drift cell design. The purpose of the test was to decide on some design parameters for a full size prototype, which is now in construction. Introduction Our motivation was to concentrate on the particle identification below 4 GeV/c which is about the limit of...
متن کاملAnti-d and Anti-He Production in Au+Au Collisions at RHIC
The STAR experiment at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, New York, USA, investigates novel QCD phenomena at high density and high temperature in ultra-relativistic Au+Au collisions. RHIC has a diameter of 3.8 km, and in total 1740 superconducting magnets [ 1]. The highest center-of-mass energy ( √ s=200 GeV) is about a factor 10 higher than past fixed...
متن کاملاسطورهسازی از داعش در روزنامههای آمریکایی
This article attempts to show how some of the essays published at some American newspapers produce Islamophobic accounts by de-historization and de-contextualization of ISIS and mythicizing it to make Islamophobic discourse. This aim will be done by narrative analysis of some selected American newspaper essays. The main argument is that these essays remove political, social and historical backg...
متن کامل