Paper |
Title |
Other Keywords |
Page |
MOPCH102 |
A Straight Section Design in RHIC to Allow Heavy Ion Electron Cooling
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electron, RHIC, dipole, quadrupole |
279 |
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MOPLS028 |
DAFNE Status Report
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luminosity, injection, collider, feedback |
604 |
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- A. Gallo, D. Alesini, M.E. Biagini, C. Biscari, R. Boni, M. Boscolo, B. Buonomo, A. Clozza, G.O. Delle Monache, E. Di Pasquale, G. Di Pirro, A. Drago, A. Ghigo, S. Guiducci, M. Incurvati, P. Iorio, C. Ligi, F. Marcellini, C. Marchetti, G. Mazzitelli, C. Milardi, L. Pellegrino, M.A. Preger, L. Quintieri, R. Ricci, U. Rotundo, C. Sanelli, M. Serio, F. Sgamma, B. Spataro, A. Stecchi, A. Stella, S. Tomassini, C. Vaccarezza, M. Vescovi, M. Zobov
INFN/LNF, Frascati (Roma)
- G. Benedetti
CELLS, Bellaterra (Cerdanyola del Vallès)
- L. Falbo
INFN-Pisa, Pisa
- J.D. Fox, P. Raimondi, D. Teytelman
SLAC, Menlo Park, California
- E. Levichev, S.A. Nikitin, P.A. Piminov, D.N. Shatilov
BINP SB RAS, Novosibirsk
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The operation of DAFNE, the 1.02 GeV c.m. e+e- collider of the Frascati National Laboratory with the KLOE detector, started in April 2004 has been concluded at the end of March 2006 with a total delivered luminosity of 2 fb-1 on the peak of the Phi resonance, 0.2 fb-1 off peak and a high statistics scan of the resonance. The best performances of the collider during this run have been a peak luminosity of 1.5 1032 cm-2s-1 and a daily delivered luminosity of 10 pb-1. The KLOE detector has been removed from one of the two interaction regions and its low beta section substituted with a standard magnetic structure, allowing for an easy vertical separation of the beams, while the FINUDA detector has been moved onto the second interaction point. Several improvements on the rings have also been implemented and are described together with the results of machine studies aimed at improving the collider efficiency and testing new operating conditions.
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MOPLS047 |
Design of an Asymmetric Super-B Factory
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collider, emittance, luminosity, factory |
646 |
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- J. Seeman, Y. Cai, A. Novokhatski, A. Seryi, M.K. Sullivan, U. Wienands
SLAC, Menlo Park, California
- M.E. Biagini, P. Raimondi
INFN/LNF, Frascati (Roma)
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Submitted for the High Luminosity Study Group for an Asymmetric Single-pass Super-B Factory: Parameters are being studied for a high luminosity e+e- collider operating at the Upsilon 4S that would deliver a luminosity of over 1036/cm2/s. This collider would use a novel combination of linear collider and storage ring techniques. In this scheme an electron beam and a positron beam are first stored in fast-damping and low-emittance damping rings, then extracted, accelerated, compressed and focused to the interaction point. After collision the two beams are decelerated and re-injected in the damping rings to be damped and extracted for collision again. The explored beam parameters are similar to those used in the design of the International Linear Collider, except for the beam energies. Design parameters for very flat beams and round beams have been studied.
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MOPLS077 |
The 2mrad Crossing Angle Interaction Region and Extraction Line
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extraction, optics, quadrupole, beam-transport |
730 |
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- R. Appleby
UMAN, Manchester
- D.A.-K. Angal-Kalinin
CCLRC/DL/ASTeC, Daresbury, Warrington, Cheshire
- P. Bambade, O. Dadoun
LAL, Orsay
- J. Carter
Royal Holloway, University of London, Surrey
- L. Keller, K. C. Moffeit, Y. Nosochkov, A. Seryi, C.M. Spencer
SLAC, Menlo Park, California
- O. Napoly
CEA, Gif-sur-Yvette
- B. Parker
BNL, Upton, Long Island, New York
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A complete optics design for the 2mrad crossing angle interaction region and extraction line was presented at Snowmass 2005. Since this time, the design task force has been working on developing and improving the performance of the extraction line. The work has focused on optimising the final doublet parameters and on reducing the power losses resulting from the disrupted beam transport. In this paper, the most recent status of the 2mrad layout and the corresponding performance are presented.
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WEPCH044 |
Interaction Region with Slim Quadrupoles
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quadrupole, LHC, luminosity, beam-beam-effects |
2014 |
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WEPLS109 |
Test Results of Fermilab-built Quadrupoles for the LHC Interaction Regions
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LHC, quadrupole, alignment, target |
2637 |
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THPCH086 |
Design of a Local IP Orbit Feedback at HERA-e
|
electron, feedback, proton, controls |
2988 |
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- J. Keil, O. Kaul, E. Negodin, R. Neumann
DESY, Hamburg
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At the electron-proton collider HERA it is often observed that the proton emittance growth rate of colliding bunches is larger compared to non-colliding proton bunches. In addition the proton background rates are increasing when the two beams are brought into collision. There are indications that a contribution comes from closed orbit oscillations of the electron beam at the two IPs. In the arcs of HERA-e oscillation amplitudes of 100-200 micrometer with frequencies of 2-15 Hz and harmonics of 50 Hz are observed. In order to stabilize the orbit at the IPs in both planes a local digital orbit feedback system with a bandwidth of more than 20 Hz has been developed. The beam position at the IPs is measured with BPMs using dedicated electronics. The four local orbit bumps are produced by air-coil steerer magnets. The data are transmitted using SEDAC field bus lines to a central PC, which is used for the computation of the correction.
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