Delta++ Resonance Measurements in a High Multiplicity Environment

Karim El Chenawi

Delta⁺⁺ Resonance Measurements in a High Multiplicity Environment

Karim El Chenawi

Research output: Thesis › Doctoral Thesis (compilation)

Abstract

The very large multiplicity of charged particles encountered in lead on lead collisions in the WA98 experiment at the CERN SPS provided new experimental challenges. Tracking detectors read out with high granularity were developed to achieve accurate position information in two dimensions, with the aim of reconstructing tracks with a minimum of combinatorial difficulties. A tracking system based on multi-step avalanche chambers equipped with a new electronic readout system was developed and implemented in the experiment during 1996. The different aspects of the tracking system and its performance are described.

The extraction of the Delta++ resonance from high statistics, high multiplicity samples of FRITIOF events has been studied in order to find a reliable method to reconstruct the number of produced Delta++. The first measurement on Delta++ production in 158 A GeV Pb+Pb collisions, using the high resolution tracking system in WA98 is presented.

Original language	English
Qualification	Doctor
Awarding Institution	Particle and nuclear physics
Supervisors/Advisors	[unknown], [unknown], Supervisor, External person
Award date	1999 Mar 4
Publisher	Department of Physics, Lund University
ISBN (Print)	91-628-3377-4
Publication status	Published - 1999
Externally published	Yes

Bibliographical note

Defence details

Date: 1999-03-04
Time: 10:15
Place: Lecture Hall B of the Department of Physics

External reviewer(s)

Name: Greene, Victoria
Title: Prof
Affiliation: USA

---

Subject classification (UKÄ)

Subatomic Physics

Free keywords

electronic
pad readout
VLSI
ASIC
chip-on-board
multi-step avalanche chamber
MSAC
tracking
position resolution
efficiency
delta resonance
heavy-ion collisions
freeze-out temperature
High energy interactions
cosmic rays
Kosmisk strålning
högenergi
Fysicumarkivet A:1999:El Chenawi

Cite this

@phdthesis{6f1605394ce043f8bf49fde8102e375c,

title = "Delta++ Resonance Measurements in a High Multiplicity Environment",

abstract = "The very large multiplicity of charged particles encountered in lead on lead collisions in the WA98 experiment at the CERN SPS provided new experimental challenges. Tracking detectors read out with high granularity were developed to achieve accurate position information in two dimensions, with the aim of reconstructing tracks with a minimum of combinatorial difficulties. A tracking system based on multi-step avalanche chambers equipped with a new electronic readout system was developed and implemented in the experiment during 1996. The different aspects of the tracking system and its performance are described. The extraction of the Delta++ resonance from high statistics, high multiplicity samples of FRITIOF events has been studied in order to find a reliable method to reconstruct the number of produced Delta++. The first measurement on Delta++ production in 158 A GeV Pb+Pb collisions, using the high resolution tracking system in WA98 is presented.",

keywords = "electronic, pad readout, VLSI, ASIC, chip-on-board, multi-step avalanche chamber, MSAC, tracking, position resolution, efficiency, delta resonance, heavy-ion collisions, freeze-out temperature, High energy interactions, cosmic rays, Kosmisk str{\aa}lning, h{\"o}genergi, Fysicumarkivet A:1999:El Chenawi",

author = "{El Chenawi}, Karim",

note = "Defence details Date: 1999-03-04 Time: 10:15 Place: Lecture Hall B of the Department of Physics External reviewer(s) Name: Greene, Victoria Title: Prof Affiliation: USA ---",

year = "1999",

language = "English",

isbn = "91-628-3377-4",

publisher = "Department of Physics, Lund University",

type = "Doctoral Thesis (compilation)",

school = "Particle and nuclear physics",

}

TY - THES

T1 - Delta++ Resonance Measurements in a High Multiplicity Environment

AU - El Chenawi, Karim

N1 - Defence details Date: 1999-03-04 Time: 10:15 Place: Lecture Hall B of the Department of Physics External reviewer(s) Name: Greene, Victoria Title: Prof Affiliation: USA ---

PY - 1999

Y1 - 1999

N2 - The very large multiplicity of charged particles encountered in lead on lead collisions in the WA98 experiment at the CERN SPS provided new experimental challenges. Tracking detectors read out with high granularity were developed to achieve accurate position information in two dimensions, with the aim of reconstructing tracks with a minimum of combinatorial difficulties. A tracking system based on multi-step avalanche chambers equipped with a new electronic readout system was developed and implemented in the experiment during 1996. The different aspects of the tracking system and its performance are described. The extraction of the Delta++ resonance from high statistics, high multiplicity samples of FRITIOF events has been studied in order to find a reliable method to reconstruct the number of produced Delta++. The first measurement on Delta++ production in 158 A GeV Pb+Pb collisions, using the high resolution tracking system in WA98 is presented.

AB - The very large multiplicity of charged particles encountered in lead on lead collisions in the WA98 experiment at the CERN SPS provided new experimental challenges. Tracking detectors read out with high granularity were developed to achieve accurate position information in two dimensions, with the aim of reconstructing tracks with a minimum of combinatorial difficulties. A tracking system based on multi-step avalanche chambers equipped with a new electronic readout system was developed and implemented in the experiment during 1996. The different aspects of the tracking system and its performance are described. The extraction of the Delta++ resonance from high statistics, high multiplicity samples of FRITIOF events has been studied in order to find a reliable method to reconstruct the number of produced Delta++. The first measurement on Delta++ production in 158 A GeV Pb+Pb collisions, using the high resolution tracking system in WA98 is presented.

KW - electronic

KW - pad readout

KW - VLSI

KW - ASIC

KW - chip-on-board

KW - multi-step avalanche chamber

KW - MSAC

KW - tracking

KW - position resolution

KW - efficiency

KW - delta resonance

KW - heavy-ion collisions

KW - freeze-out temperature

KW - High energy interactions

KW - cosmic rays

KW - Kosmisk strålning

KW - högenergi

KW - Fysicumarkivet A:1999:El Chenawi

M3 - Doctoral Thesis (compilation)

SN - 91-628-3377-4

PB - Department of Physics, Lund University

ER -