IPAC2014 - List of Keywords (lepton)

Paper	Title	Other Keywords	Page
TUOCB01	Concept of a Hybrid (Normal and Superconducting) Bending Magnet Based on Iron Magnetization for 80-100 km Lepton / Hadron Colliders	hadron, collider, dipole, injection	980
	A. Milanese, L. Rossi CERN, Geneva, Switzerland H. Piekarz Fermilab, Batavia, Illinois, USA
	This paper presents a conceptual design of bending magnets to be used first in a full energy booster for a lepton machine (TLEP) and later in a low energy ring for a hadron machine (VHE-LHC). TLEP and VHE-LHC would be respectively e-ebar and p-p colliders, at the energy frontier in each category, to be installed in a 80-100 km circumference tunnel. The main requirements in terms of operating field range and field quality are discussed. Two dimensional simulations then show how an iron-dominated magnet could fulfil the specifications. The design is a "transmission-line" magnet, where the excitation current is provided by a single turn. When operating with leptons, a resistive conductor can be used. To then increase the strength needed to handle hadrons, the use of superconducting technology is needed. Recent results on similar prototypes built for different machines are recalled to point to the developments needed to assess the viability of this design.
	Slides TUOCB01 [4.225 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUOCB01
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THPRO061	New and Unifying Formalism for Study of Particle-Spin Dynamics Using Tools Distilled From Theory of Bundles	resonance, polarization, HOM, framework	3014
	K.A. Heinemann, J.A. Ellison UNM, Albuquerque, New Mexico, USA D.P. Barber Cockcroft Institute, Warrington, Cheshire, United Kingdom D.P. Barber, M. Vogt DESY, Hamburg, Germany
	Funding: The work of JAE and KH was supported by DOE under DE-FG-99ER41104 and the work of DPB and MV was supported by DESY. We summarize our recent work on spin motion in storage rings . In fact we return to our study * of spin motion in storage rings. We again focus on spin tunes, polarization fields etc. but in contrast to ** we base the description on one turn maps and refine and expand our toolset from that in * by using a rather modern method from Dynamical-Systems theory, developed in the 1980's by R. Zimmer and others based on bundles , . With this we obtain new insights into invariant spin fields, invariant frame fields, spin tunes and spin-orbit resonances. At the same time we get a unified way to treat spin-1/2 and spin-1 particles. The bundle aspect is pointed out and we briefly mention the relation to Yang-Mills Theory as well. K.Heinemann, D.P.Barber, J.A.Ellison, M.Vogt. To be submitted. D.P.B., J.A.E., K.H., PRSTAB 7 (2004) 124002. * K.Heinemann, PhD Thesis, University of New Mexico, 2010 (available on the web).
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO061
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Paper

Title

Other Keywords

Page

Concept of a Hybrid (Normal and Superconducting) Bending Magnet Based on Iron Magnetization for 80-100 km Lepton / Hadron Colliders

hadron, collider, dipole, injection

980

A. Milanese, L. Rossi
CERN, Geneva, Switzerland
H. Piekarz
Fermilab, Batavia, Illinois, USA

This paper presents a conceptual design of bending magnets to be used first in a full energy booster for a lepton machine (TLEP) and later in a low energy ring for a hadron machine (VHE-LHC). TLEP and VHE-LHC would be respectively e-ebar and p-p colliders, at the energy frontier in each category, to be installed in a 80-100 km circumference tunnel. The main requirements in terms of operating field range and field quality are discussed. Two dimensional simulations then show how an iron-dominated magnet could fulfil the specifications. The design is a "transmission-line" magnet, where the excitation current is provided by a single turn. When operating with leptons, a resistive conductor can be used. To then increase the strength needed to handle hadrons, the use of superconducting technology is needed. Recent results on similar prototypes built for different machines are recalled to point to the developments needed to assess the viability of this design.

Slides TUOCB01 [4.225 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUOCB01

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPRO061

New and Unifying Formalism for Study of Particle-Spin Dynamics Using Tools Distilled From Theory of Bundles

resonance, polarization, HOM, framework

3014

K.A. Heinemann, J.A. Ellison
UNM, Albuquerque, New Mexico, USA
D.P. Barber
Cockcroft Institute, Warrington, Cheshire, United Kingdom
D.P. Barber, M. Vogt
DESY, Hamburg, Germany

Funding: The work of JAE and KH was supported by DOE under DE-FG-99ER41104 and the work of DPB and MV was supported by DESY.
We summarize our recent work on spin motion in storage rings *. In fact we return to our study ** of spin motion in storage rings. We again focus on spin tunes, polarization fields etc. but in contrast to ** we base the description on one turn maps and refine and expand our toolset from that in * by using a rather modern method from Dynamical-Systems theory, developed in the 1980's by R. Zimmer and others based on bundles **, ***. With this we obtain new insights into invariant spin fields, invariant frame fields, spin tunes and spin-orbit resonances. At the same time we get a unified way to treat spin-1/2 and spin-1 particles. The bundle aspect is pointed out and we briefly mention the relation to Yang-Mills Theory as well.
* K.Heinemann, D.P.Barber, J.A.Ellison, M.Vogt. To be submitted.
** D.P.B., J.A.E., K.H., PRSTAB 7 (2004) 124002.
*** K.Heinemann, PhD Thesis, University of New Mexico, 2010 (available on the web).

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO061

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)