Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
This is a short narrative summary of the review talk given at the Nanobeam 2002 Workshop.
Stability and Ground Motion Challenges in Linear Colliders
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 3
Book Description
This is a short narrative summary of the review talk given at the Nanobeam 2002 Workshop.
Issues of Stability and Ground Motion in ILC.
Author: Andrei SeryiPublisher:
ISBN:
Category :
Languages : en
Pages : 13
Book Description
Stability of International Linear Collider is determined by the stability of the site, additional noises of beamline component, energy and kicker jitter, and performance of train-to-train and intratrain feedback. Stability goals in terms of the beam jitter at the end of the linac, in BDS and at the IP are discussed in this paper, and translated to stability goals for the site and for component jitter. Present status of stability studies is reviewed and feasibility of achieving the stability goals is discussed.
Challenges in Future Linear Colliders
Author: Publisher:
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Languages : en
Pages :
Book Description
For decades, electron-positron colliders have been complementing proton-proton colliders. But the circular LEP, the largest e-e+ collider, represented an energy limit beyond which energy losses to synchrotron radiation necessitate moving to e-e+ linear colliders (LCs), thereby raising new challenges for accelerator builders. Japanese-American, German, and European collaborations have presented options for the Future Linear Collider (FLC). Key accelerator issues for any FLC option are the achievement of high enough energy and luminosity. Damping rings, taking advantage of the phenomenon of synchrotron radiation, have been developed as the means for decreasing beam size, which is crucial for ensuring a sufficiently high rate of particle-particle collisions. Related challenges are alignment and stability in an environment where even minute ground motion can disrupt performance, and the ability to monitor beam size. The technical challenges exist within a wider context of socioeconomic and political challenges, likely necessitating continued development of international collaboration among parties involved in accelerator-based physics.
Tirol autrichien
Author: Ground Motion Studies for Large Future Linear Colliders
Author: Shigeru TakedaEFFECTS OF DYNAMIC MISALIGNMENTS AND FEEDBACK PERFORMANCE ON LUMINOSITY STABILITY IN LINEAR COLLIDERS.
Author: Publisher:
ISBN:
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Languages : en
Pages : 5
Book Description
The performance of high energy linear colliders depends critically on the stability with which they can maintain the collisions of nanometer-size beams. Ground motion and vibration, among other effects, will produce dynamic misalignments which can offset the beams at the collision point. A system of train-to-train and intra-train beam-beam feedbacks, possibly combined with additional beam-independent active systems, is planned to compensate for these effects. Extensive simulation studies of ground motion and luminosity stabilization have been performed as part of the work of the International Linear Collider Technical Review Committee [1]. This paper presents a comparison of the expected performance for TESLA, JLC/NLC and CLIC under various assumptions about feedbacks and the level of ground motion.
Influence of Ground Motion on the Time Evolution of Beams in Linear Colliders
Author: Napoly O. SeryGround Motion Models for Future Linear Colliders
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Optimization of the parameters of a future linear collider requires comprehensive models of ground motion. Both general models of ground motion and specific models of the particular site and local conditions are essential. Existing models are not completely adequate, either because they are too general, or because they omit important peculiarities of ground motion. The model considered in this paper is based on recent ground motion measurements performed at SLAC and at other accelerator laboratories, as well as on historical data. The issues to be studied for the models to become more predictive are also discussed.
Influence of Ground Motion on the Time Evolution of Beams in Linear Colliders
Author: Olivier NapolyAlighment and Vibration Issues in TeV Linear Collider Design
Author: G. E. FischerPublisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
The next generation of linear colliders will require alignment accuracies and stabilities of component placement at least one, perhaps two, orders of magnitude better than can be achieved by the conventional methods and procedures in practice today. The magnitudes of these component-placement tolerances for current designs of various linear collider subsystems are tabulated. In the micron range, long-term ground motion is sufficiently rapid that on-line reference and mechanical correction systems are called for. Some recent experiences with the upgraded SLAC laser alignment systems and examples of some conceivable solutions for the future are described. The so called ''girder'' problem is discussed in the light of ambient and vibratory disturbances. The importance of the quality of the underlying geology is stressed. The necessity and limitations of particle-beam-derived placement information are mentioned.