Simulation of the measurement by primary cluster counting of the energy lost by a relativistic ionizing particle in argon

Lapique, F.; Piuz, F.

doi:10.1016/0029-554x(80)90744-2

Cited by 79 publications

(35 citation statements)

References 31 publications

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“…Table 1. Measured [14] and theoretical [13] In Ar one finds on average some 25 clusters / cm with a total n T of about 100 electrons/cm. The most probable value for the total number of electrons is n mp = 42 electrons / cm.…”

Section: Primary Clustersmentioning

confidence: 87%

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Time projection chambers

Hilke

2010

Rep. Prog. Phys.

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The Time Projection Chamber (TPC) had originally been proposed to permit full reconstruction of events of up to 20 particles at an electron-positron collider. It was to provide 3-D information for tracking and momentum measurement together with particle identification by multiple ionization sampling, in a compact detector. This powerful combination soon found applications in other fields: at one end, for studies of rare events of simple structure; at the other extreme, for heavy ion collisions, handling ever higher particle densities, finally up to several thousand tracks in a single event, still providing information on a track-to-track basis.Basic physics, performance and limitations of drift chambers in general will be discussed first. Then the characteristics of TPCs will be introduced, as well as their practical realization and performance. The development from the first TPC, 30 years ago, to the present day will be covered and followed by a few final comments on the ongoing studies for future applications.

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Section: Primary Clustersmentioning

confidence: 87%

“…Then N eff is close to 1, as the effect of the small cluster is negligible. For the cluster distribution calculated by [13], approximately N eff = m 0.54 has been obtained [7]. The values of N eff are thus very small for situations with well separated clusters.…”

Section: Total Ionization -De/dxmentioning

confidence: 99%

Time projection chambers

Hilke

2010

Rep. Prog. Phys.

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“…For the resonance term, the following parameterization was obtained from photoabsorption data [50,51]: (See figure 4.3a. )…”

Section: Simentioning

confidence: 99%

Inclusive. pi. /sup + -/, K/sup + -/, and p, anti p production in e/sup +/e/sup -/ annihilation at. sqrt. s = 29 GeV

Cowan¹

1988

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“…For the TPC analysis, the velocity dependence of the energy loss is taken from a rather detailed theoretical calculation, to which small empirical corrections are applied for best agreement with the data. The calculations were heavily based on the work of Lynch [63], Lapique and Piuz [64], Allison and Cobb [65], and Talman [66].…”

Section: Theory and Measurement Of Ionization Energy Loss In The Tpcmentioning

confidence: 99%

Charged Hadron Production in E+ E- Annihilation at S**(1/2) = 29-Gev

Wolf¹

2004

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LBL-23738Data from the Time Projection Chamber at the SLAC storage ring PEP have been used to study the inclusive production of charged hadrons. Particles were identified by simultaneous dE/ dx and momentum measurements. Cross sections and particle fractions for 1r±, k±, and p(p) are given as a function of several variables. Predictions of various hadronization models are compared to the data. A comparison is made with other fragmentation processes. This work is supported by the United States Department of Energy underContract DE-AC03-76SF00098. AcknowledgementsI would like to thank my advisor, Werner Hofmann, for the many things he has taught me and for the useful advice he has given me in doing my analysis. I would also like to thank Werner, Gerson Goldhaber, and Samuel Markowitz for their comments as members of my thesis committee. Of course, this thesis would not be possible without the efforts of many people in the collaboration who played various roles in building the detector and making it work, and who offered me many helping hands. Their efforts are much appreciated, especially those of Hiro Yamamoto, Gerry Lynch, Philippe Eberhard, and Ron Ross. IntroductionThe nature of the strong interactions has been a concern since the 1930's when people tried to understand the forces that held nuclei together. Today it is believed that the problem is solved in principle: strong interactions are described by the theory of quantum chromodynamics or QCD. Explicit solutions to many problems, however, can not be given using QCD because of mathematical complexities. Of particular interest is the fragmentation of quarks into jets of hadrons under the influence of color confinement forces, because it is one of the fundamental phenomena of high energy physics. Unfortunately, current mathematical techniques are not powerful enough to solve the QCD equations governing quark fragmentation. In the absence of explicit solutions, fragmentation models have been developed, and insight into QCD is obtained by the agreement of certain models with experimental data. The reaction e+ e--+ hadrons provides a very clean environment to study quark fragmentation and to establish a rich data base against which fragmentation models as well as particle production in other reactions can be compared. This thesis provides a coherent set of inclusive charged pion, kaon, and proton cross sections and the associated particle fractions in commonly used variables such as rapidity, Feynman x, transverse momentum, etc. These results should be of interest to model builders and others working in all aspects of fragmentation physics. Predictions of various hadronization models of current interest are compared to the data. Comparisons are also made between fragmentation in e+e-annihilation and fragmentation in other processes. The thesis starts with a review of e+e-annihilation in Chapter 2. Different fragmentation models of current interest are also discussed. In Chapter 3 the Time Projection Chamber (TPC) detector used for collecting the data i...

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Simulation of the measurement by primary cluster counting of the energy lost by a relativistic ionizing particle in argon

Cited by 79 publications

References 31 publications

Time projection chambers

Time projection chambers

Inclusive. pi. /sup + -/, K/sup + -/, and p, anti p production in e/sup +/e/sup -/ annihilation at. sqrt. s = 29 GeV

Charged Hadron Production in E+ E- Annihilation at S**(1/2) = 29-Gev

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