Skip to Main content Skip to Navigation
Theses

Développement et caractérisation de
photomultiplicateurs hémisphériques pour les
expériences d'astroparticules – Etalonnage des
détecteurs de surface et analyse des gerbes
horizontales de l'Observatoire Pierre Auger

Abstract : The large photomultipliers (PMT) are currently used in astroparticle and neutrino experiments
where they have to detect low levels of light. We have studied and characterised large PMTs
developed by the PHOTONIS Group Company. The first part of this thesis is dedicated to the full
characterization of two types of multipliers currently used in large PMTs. Then, we present results of a
new photocathode process, applied on the XP1805 (PMT used in the Pierre Auger Observatory) in
order to improve the quantum efficiency. Finally, we study the PMT diameter influence on main
parameters (5, 8 and 10 inches).
The second part is devoted to the study of the water Čerenkov tank (WCD) response to the shower
particules and the horizontal air showers analysis with the Pierre Auger Observatory. The main
parameters of a WCD simulation developed in the Auger IPN group were calibrated with several
measurements on vertical and inclined muons, performed on dedicated test tanks. The kind of detector
used in the surface detector allows detecting very inclined events with a good sensitivity (zenith angle
superior to 70 degrees). We have established specific methods to analyze these events (selection and
reconstruction). These methods were applied to the Auger data in order to obtain the energy spectrum
of the horizontal events. Finally, we detailed two methods to test directly the hadronic models
predictions by studying the air showers muonic component.
Complete list of metadatas

Cited literature [94 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00114115
Contributor : Damien Dornic <>
Submitted on : Wednesday, November 15, 2006 - 3:28:07 PM
Last modification on : Wednesday, September 16, 2020 - 4:07:08 PM
Long-term archiving on: : Tuesday, April 6, 2010 - 7:09:09 PM

Identifiers

  • HAL Id : tel-00114115, version 1

Collections

Citation

Damien Dornic. Développement et caractérisation de
photomultiplicateurs hémisphériques pour les
expériences d'astroparticules – Etalonnage des
détecteurs de surface et analyse des gerbes
horizontales de l'Observatoire Pierre Auger. Cosmologie et astrophysique extra-galactique [astro-ph.CO]. Université Paris Sud - Paris XI, 2006. Français. ⟨tel-00114115⟩

Share

Metrics

Record views

237

Files downloads

6063