Concept of a polarized positron source for CEBAF
Creators
- Habet, Sami
- Universite Paris-Saclay, ecole doctorale no. 576 - particules hadrons energie et noyau, instrumentation, imagerie, cosmos et simulation - Pheniics (France)
- Faculte des Sciences d'Orsay, Laboratoire de Physique des 2 Infinis Irene Joliot-Curie - IJCLab, Bat. 100 et 200, 15 rue Georges Clemenceau, 91405 Orsay (France)
Description
This thesis focuses on the development of polarized and unpolarized positron beams for the future experimental program of hadronic physics at the Thomas Jefferson National Accelerator Facility (JLab). The primary challenge is to produce high-duty-cycle and high-intensity polarized positron beams. The JLab positron source, which is based on the PEPPo (Polarized Electrons for Polarized Positrons) technique, aims to use a high intensity (1 mA) and highly polarized (90%) continuous electron beam of moderate energy (120 MeV) to produce either a low intensity (>50 nA), highly polarized (60%) positron beam or a high intensity (>1 μA), unpolarized positron beam. The optimization of the layout and performance of the positron source is examined in this thesis. The source is designed with a specialized second injector to generate, transport, accelerate, and shape positron beams. It is compatible with acceleration at the Continuous Electron Beam Accelerator Facility (CEBAF), and the investigation results are presented in this document. (author)
Abstract (French)
Cette these se concentre sur le developpement de faisceaux de positrons polarises et non polarises pour le futur programme experimental en physique hadronique au Thomas Jefferson National Accelerator Facility (JLab). Le defi principal consiste a produire des faisceaux de positrons polarises de grand cycle utile a haute intensite et a courant eleve. La source de positrons du JLab, basee sur la technique PEPPo (Polarized Electrons for Polarized Positrons), vise a utiliser un faisceau continu d'electrons de haute intensite (1 mA) et hautement polarises (90%) d'energie moderee (120 MeV) pour produire soit un faisceau de positrons de faible intensite (>50nA) et hautement polarises (60%), soit un faisceau de positrons de haute intensite (>1 μA) et non polarises. L'optimisation de la disposition et des performances de la source de positrons est examinee dans cette these. La source est concue avec un second injecteur specialise pour generer, transporter, accelerer et faconner les faisceaux de positrons. Elle est compatible avec l'acceleration au Continuous Electron Beam Accelerator Facility (CEBAF), et les resultats de l'investigation sont presentes dans ce document. (auteur)
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Additional details
Additional titles
- Original title (English)
- Conception d'une source polarisee de positrons pour CEBAF
Publishing Information
- Imprint Pagination
- 144 p.
- Report number
- FRNC-TH--15860
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 55073517
- Subject category
- S43: PARTICLE ACCELERATORS;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- BEAM DYNAMICS; CEBAF ACCELERATOR; OPTIMIZATION; POSITRON BEAMS; POSITRON SOURCES
- Descriptors DEC
- ACCELERATORS; BEAMS; DYNAMICS; LEPTON BEAMS; LINEAR ACCELERATORS; MECHANICS; PARTICLE BEAMS; PARTICLE SOURCES; RADIATION SOURCES
Optional Information
- Notes
- 73 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses