NDLI: Future physics with polarized ep colliders

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Future physics with polarized ep colliders

Content Provider	Semantic Scholar
Author	Roeck, Albert De
Copyright Year	2001
Abstract	The commissioning of the first electron-proton collider HERA (27.5 GeV electrons on 820 GeV protons) eight years ago opened up a completely new kinematical domain in deep inelastic scattering (DIS), and the two HERA experiments have provided a multitude of new insights into the structure of the proton and the photon since then. It is therefore natural to assume that the operation of ep-colliders with polarized proton and electron beams will add vital new information to our picture of the spin structure of the nucleon. Possible high energy ep-collider projects presently under discussion are listed in Table 1. HERA has just been upgraded to reach a higher luminosity. It has excellent detectors, and the electron beam is already polarized. The polarization of the proton beam is technically more involved than for the electron beam, since protons do not polarize naturally in the HERA ring. Hence beams from a source of polarized protons have to be accelerated through the whole chain and the polarization has to be kept during the process. The technical aspects of this project are elaborated in [1]. Based on these studies, it seems realistic to assume that HERA could be operated with polarized electron and proton beams, each polarized to about 70%, acumulating a luminosity of 500 pb−1 when integrated over several years. The Electron Ion Collider (EIC) [2] –if built at BNL– will need a polarized electron accelerator, most likely a LINAC, added to the RHIC po-
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://cds.cern.ch/record/524416/files/0110335.pdf
Alternate Webpage(s)	http://arxiv.org/pdf/hep-ph/0110335v1.pdf
Language	English
Access Restriction	Open
Subject Keyword	Detectors Earth inductor compass Electrons Experiment Ions Nucleons Photons Polarization (waves) Proton-Translocating ATPases Protons Serous Endometrial Intraepithelial Carcinoma electron beam proton beam
Content Type	Text
Resource Type	Article

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