PAC07 - List of Authors (Raimondi, P.)

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Raimondi, P.

Paper	Title	Page
MOZAKI02	New Developments in Super B Factories	32
	P. Raimondi INFN/LNF, Frascati (Roma)
	The design of a super B factory with luminosity in the range of 10³⁶ cm^-2 sec^-1, based on innovative ideas like the crabbed waist, is being studied by an international collaboration, in close contact with the ILC studies.
	Slides
MOOBKI02	DAΦ NE Phi-Factory Upgrade for Siddharta Run	66
	M. E. Biagini, D. Alesini, D. Babusci, R. Boni, M. Boscolo, F. Bossi, B. Buonomo, A. Clozza, G. O. Delle Monache, T. Demma, G. Di Pirro, A. Drago, A. Gallo, S. Guiducci, C. Ligi, F. Marcellini, G. Mazzitelli, C. Milardi, F. Murtas, L. Pellegrino, M. A. Preger, L. Quintieri, P. Raimondi, R. Ricci, U. Rotundo, C. Sanelli, G. Sensolini, M. Serio, F. Sgamma, B. Spataro, A. Stecchi, A. Stella, S. Tomassini, C. Vaccarezza, M. Zobov INFN/LNF, Frascati (Roma) S. Bettoni CERN, Geneva I. Koop, E. Levichev, P. A. Piminov, D. N. Shatilov, V. V. Smaluk BINP SB RAS, Novosibirsk K. Ohmi KEK, Ibaraki
	An upgrade of the DAΦNE Phi-Factory at LNF is foreseen in view of the installation of the Siddharta detector in 2007. A new Interaction Region suitable to test the large crossing angle and crabbed waist collision schemes* will be installed. Other machine improvements, such as wigglers modifications, new injection kickers and chambers coating will be realized with the goal of reaching luminosity of the order of 10³³/cm²/s. The principle of operation of the new scheme, together with hardware designs and simulation studies, will be presented. *DAPHNE Upgrade Team, "DAPHNE Upgrade for Siddharta run", DAPHNE Tech. Note G-68, LNF-INFN, Dec. 2006
	Slides
TUPAN031	Touschek Background and Beam Lifetime Studies for the DAFNE Upgrade	1454
	M. Boscolo, M. E. Biagini, S. Guiducci, P. Raimondi INFN/LNF, Frascati (Roma)
	For the low energy collider DAFNE the machine induced backgrounds into the experiments as well as the beam lifetime are dominated by the Touschek effect. Many efforts have been put in its reduction: by adjusting optical parameters, by inserting additional collimators, as well as by simulating and tracking scattered particles in order to find the proper actions that allow reducing these effects. Studies on the distribution and trajectories of the Touschek particles along the ring are discussed here for the Siddarta run configuration with the crabbed waist scheme, together with an evaluation of the beam lifetime. Effectiveness of the scrapers installed in the two rings has been investigated with the new machine configuration and new optimized positions along the beam pipe have been found.
TUPAN034	Super-B Factory using Low Emittance Storage Rings and Large Crossing Angle	1460
	J. Seeman, Y. Cai, M. K. Sullivan, U. Wienands SLAC, Menlo Park, California M. E. Biagini, P. Raimondi INFN/LNF, Frascati (Roma)
	Funding: Work supported by US DOE contract DE-AC02-76SF00515. Submitted for the High Luminosity Study Group for an Asymmetric 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 at 4 GeV x 7 GeV are stored in low-emittance damping rings similar to those designed for a Linear Collider (LC). A LC style interaction region is included in the ring to produce sub-millimeter vertical beta functions at the collision point. A large crossing angle (±30 mrad) is used at the collision point to allow beam separation and reduce the hourglass effect. Beam currents of about 3 A x 2 A in 1700 bunches can produce a luminosity of 10³⁶/cm²/s. Design parameters and beam dynamics effects are discussed.
TUPAN035	Reduction of the Non-Linearities in the DAPHNE Main Rings Wigglers	1463
	S. Bettoni CERN, Geneva S. Guiducci, M. A. Preger, P. Raimondi, C. Sanelli INFN/LNF, Frascati (Roma)
	The wigglers of the DAPHNE main rings have been the main source of non-linearities for the beam dynamics in the collider. This paper describes a method to reduce the integrated odd multipoles (the even ones tend to vanish for the periodicity of the magnet) by alternatively displacing the magnetic axis of the poles to compensate the integrated odd multipoles in each half-period of the wiggler. In order to check the effectiveness of this approach, tracking studies have been performed. Tracking results have been used to tune the MAD model of the wiggler.
TUPAN037	Beam-Beam Simulations for Particle Factories with Crabbed Waist	1469
	M. Zobov, P. Raimondi INFN/LNF, Frascati (Roma) D. N. Shatilov BINP SB RAS, Novosibirsk
	The recently proposed "crabbed waist" scheme for beam-beam collisions can substantially increase luminosity since it combines several potentially advantageous ideas. Large crossing angle together with small horizontal beam size allow having very small beta-functions at the interaction point (IP) and ordinary bunch length without incurring in the "hourglass" effect. The other main feature of such a collision scheme is the "crabbed waist" transformation, which is realized by two sextupoles placed in proper betatron phases around the IP. Such a transformation can strongly suppress the beam-beam betatron resonances induced in collisions with large Piwinski's angle, thus providing significant luminosity increase and opening much more room for choices of the working point. In this paper we present the results of beam-beam simulations performed in order to optimize the parameters of two currently proposed projects with the crabbed waist: the DAFNE upgrade and the Super B-factory project.
TUPAN047	Beam-beam Effects in Crab Crossing and Crab Waist Schemes	1493
	K. Ohmi, Y. Funakoshi KEK, Ibaraki M. E. Biagini, P. Raimondi, M. Zobov INFN/LNF, Frascati (Roma)
	To boost up the luminosity performance in B factories, crab crossing and crab waist schemes are proposed. The crab crossing scheme compensates crossing angle, while the crab waist scheme compensates nonlinear tems induced by crossing angle with sextupole magnets. We discuss which nonlinear terms in the beam-beam map are enhanced by the crossing angle and which terms are compensated by the crab waist sextupole.
TUPAN049	Low Emittance Lattices and Final Focus Design for the SuperB Project	1499
	Y. Ohnishi KEK, Ibaraki M. E. Biagini, P. Raimondi INFN/LNF, Frascati (Roma) Y. Cai, J. Seeman, M. K. Sullivan, U. Wienands SLAC, Menlo Park, California A. Wolski Liverpool University, Science Faculty, Liverpool
	For the SuperB project* very low emittances (horizontal < 1 nm) and small beta functions at the Interaction Points are required to achieve the design luminosity of 10³⁶/cm²/s. Low emittance lattice have been designed, using the PEP-II magnets, for the two rings of 4 and 7 GeV, which will have the same emittances and damping times. A new Final Focus section has also been designed to get the strong focusing at the Interaction Point, at the same time providing local correction of the high chromaticity and exploiting the large crossing angle and crabbed waist concepts. Lattice features and chromaticity correction schemes will be discussed. Dynamic apertures, with damping wigglers similar to the ILC ones, will also be presented. * P. Raimondi, "New Developments for SuperB Factories", Invited talk, this Conference
TUPAS066	Interaction Region Design for a Super-B Factory	1805
	M. K. Sullivan, J. Seeman, U. Wienands SLAC, Menlo Park, California M. E. Biagini, P. Raimondi INFN/LNF, Frascati (Roma)
	Funding: Work supported by US DOE contract DE-AC02-76SF00515 We present a preliminary design of an interaction region for a Super-B Factory with luminosity of 1x10³⁶ cm²/s. The collision has a ± 17 mrad crossing angle and the first magnetic element starts 30 cm from the collision point. We show that synchrotron radiation backgrounds are controlled and are at least as good as the backgrounds calculated for the PEP-II accelerator. How the beams get into and out of a shared beam pipe is illustrated along with the control of relatively high synchrotron radiation power from the outgoing beams. The high luminosity makes radiative bhabha backgrounds significantly higher than that of the present B-Factories and this must be addresed in the initial design.
TUPAS070	Optimization of Chromatic Optics Near the Half Integer in PEP-II	1814
	G. Yocky, Y. Cai, F.-J. Decker, Y. Nosochkov, U. Wienands SLAC, Menlo Park, California P. Raimondi INFN/LNF, Frascati (Roma)
	Measurements of the W-function in PEP-II during Run 5 revealed that the chromatic beta functions in both the HER and LER were not optimized. Through a process of measurement, offline analysis and modelling, and high-current run implementation the PEP-II collider luminosity performance was increased by at least 10% by reconfiguring the strengths of sextupoles near the IP to take advantage of a minimized W and increased IP bandwidth.
TUPAN033	DAΦ NE Setup and Performances During the Second FINUDA Run	1457
	C. Milardi, D. Alesini, M. E. Biagini, C. Biscari, R. Boni, M. Boscolo, B. Buonomo, A. Clozza, G. O. Delle Monache, T. Demma, E. Di Pasquale, G. Di Pirro, A. Drago, A. Gallo, A. Ghigo, S. Guiducci, M. Incurvati, P. Iorio, C. Ligi, F. Marcellini, C. Marchetti, G. Mazzitelli, L. Pellegrino, M. A. Preger, L. Quintieri, P. Raimondi, R. Ricci, U. Rotundo, C. Sanelli, M. Serio, F. Sgamma, B. Spataro, A. Stecchi, A. Stella, S. Tomassini, C. Vaccarezza, M. Zobov INFN/LNF, Frascati (Roma) J. D. Fox, D. Teytelman SLAC, Menlo Park, California E. Levichev, S. A. Nikitin, P. A. Piminov, D. N. Shatilov BINP SB RAS, Novosibirsk
	Beam operations on DAΦNE restarted on October 2006 after a four months shut-down to remove the KLOE experimental detector and to install the FINUDA one. This period has been also used for maintenance and implementation of several upgrades. In the first two months of operation the peak and integrated luminosity already exceeds the values obtained during the first FINUDA run by 20%. The DAΦNE goal is to deliver 1 fb-1 integrated luminosity by the end of May 2007. The collider performances during the run are presented together with the improvements obtained in terms of ring nonlinearities and beam dynamics coming from several collider modifications.
TUPAN036	DAPHNE Upgrade: A New Magnetic and Mechanical Layout	1466
	S. Tomassini, D. Alesini, A. Beatrici, A. Clozza, E. Di Pasquale, G. Fontana, F. Marcellini, G. Mazzitelli, M. Paris, P. Raimondi, C. Sanelli, G. Sensolini, F. Sgamma, M. Troiani, M. Zobov, A. Zolla INFN/LNF, Frascati (Roma) M. E. Esposito Rome University La Sapienza, Roma
	The DAPHNE Phi-Factory upgrade, foreseen for the Siddharta detector run in 2007, will require a new magnetic and mechanical layout to exploit the "large crossing angle" and "crabbed waist" concepts. New permanent quadrupole magnets and aluminium vacuum chamber with thin window have been designed for the new interaction region, with the aim to reuse at maximum the present magnetic and vacuum chamber components. A vacuum chamber of novel design will allow separating the beams at the second interaction region. Designs and results for the new layout will be presented. DAPHNE Upgrade Team, "DAPHNE Upgrade for Siddharta run", DAPHNE Tech. Note G-68, Dec. 2006.