Paper |
Title |
Page |
WEXG02 |
Crabbed Waist Collisions in DAΦNE and Super-B Design
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1898 |
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- P. Raimondi, D. Alesini, M. E. Biagini, C. Biscari, R. Boni, M. Boscolo, F. Bossi, B. Buonomo, A. Clozza, G. O. Delle Monache, T. Demma, E. Di Pasquale, G. Di Pirro, A. Drago, A. Gallo, A. Ghigo, S. Guiducci, C. Ligi, F. Marcellini, G. Mazzitelli, C. Milardi, F. Murtas, 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. Zobov
INFN/LNF, Frascati (Roma)
- N. Arnaud, D. Breton, P. Roudeau, A. Stocchi, V. Variola, B. F. Viaud
LAL, Orsay
- S. Bettoni
CERN, Geneva
- P. Branchini
roma3, Rome
- M. Esposito
Rome University La Sapienza, Roma
- I. Koop, E. B. Levichev, P. A. Piminov, D. N. Shatilov, V. V. Smaluk
BINP SB RAS, Novosibirsk
- K. Ohmi
KEK, Ibaraki
- E. Paoloni
University of Pisa and INFN, Pisa
- M. Schioppa
INFN Gruppo di Cosenza, Arcavacata di Rende (Cosenza)
- D. Teytelman
SLAC, Menlo Park, California
- P. Valente
INFN-Roma, Roma
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The new idea of increasing the luminosity of a collider with crabbed waist collisions and first experimental results from DAΦNE using this concept are presented. Consequences for the design of future factories will be discussed. An outlook to the performance reach with crabbed waist collisions is given, with emphasis on future B Factories.
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Slides
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WEPP036 |
DAΦNE Setup and Operation with the Crab-Waist Collision Scheme
|
2599 |
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- C. Milardi, D. Alesini, M. E. Biagini, C. Biscari, R. Boni, M. Boscolo, F. Bossi, B. Buonomo, A. Clozza, G. O. Delle Monache, T. Demma, E. Di Pasquale, G. Di Pirro, A. Drago, A. Gallo, A. Ghigo, S. Guiducci, C. Ligi, F. Marcellini, G. Mazzitelli, F. Murtas, 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)
- N. Arnaud, D. Breton, P. Roudeau, A. Stocchi, V. Variola, B. F. Viaud
LAL, Orsay
- S. Bettoni
CERN, Geneva
- P. Branchini
roma3, Rome
- M. Esposito
Rome University La Sapienza, Roma
- I. Koop, E. B. Levichev, P. A. Piminov, D. N. Shatilov
BINP SB RAS, Novosibirsk
- K. Ohmi
KEK, Ibaraki
- E. Paoloni
University of Pisa and INFN, Pisa
- M. Schioppa
INFN Gruppo di Cosenza, Arcavacata di Rende (Cosenza)
- V. V. Smaluk
BINP, Novosibirsk
- P. Valente
INFN-Roma, Roma
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In the second half of 2007 a major upgrade has been implemented on the Frascati DAΦNE collider in order to test the novel idea of Crab Waist collisions. New vacuum chambers and permanent quadrupole magnets have been designed, fabricated and installed to realize the new configuration. At the same time the performances of relevant hardware components, such as fast injection kickers and shielded bellows have been improved relying on new design concepts. The collider has been successfully commissioned in this new configuration. The paper describes the new layout as well as several experimental results about linear and non-linear optics setup and optimization, damping of beam instabilities and discusses the obtained luminosity performances.
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THPP120 |
Measurements on an A/D Interface Used in the Power Supply Control System of the Main Dipoles of CNAO
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3638 |
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- G. Franzini, D. Pellegrini, M. Serio, A. Stella
INFN/LNF, Frascati (Roma)
- M. Donetti, M. Pezzetta, M. Pullia
CNAO Foundation, Milan
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The CNAO (the Italian Centre of Oncological Hadrontherapy, near Pavia) is in its final step of construction and is about to be fully operative. It is based on a synchrotron that can accelerate protons up to 250MeV and carbon ions up to 400MeV/u for the treatment of patients. In this paper we describe an A/D interface, used in the power supply control system of the synchrotron main dipoles, called B-Train. The field is measured in a dedicated dipole connected in series with the sixteen ones of the synchrotron and is then fed back to the power supply. The field is obtained integrating and digitizing the voltage induced on a pickup coil inserted in the gap of the seventeenth dipole. The A/D interface under study is based on a 64-channel current to frequency converter ASIC, in CMOS 0.35 μm technology, followed by a counter and uses a recycling integrator technique. The digital signal obtained is then used to generate a feedback signal for control system of the dipoles power supply. We present the electronic structure, the lab measurements and the behavior for various setups of the A/D interface described.
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