RuPAC2014 - List of Keywords (luminosity)

Paper	Title	Other Keywords	Page
TUY01	Status and Perspectives of the VEPP-2000 Complex	positron, collider, electron, injection	6
	Yu. A. Rogovsky, D.E. Berkaev, A.S. Kasaev, I. Koop, A.N. Kyrpotin, A.P. Lysenko, E. Perevedentsev, V.P. Prosvetov, A.L. Romanov, A.I. Senchenko, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz, A.N. Skrinsky, I.M. Zemlyansky, Yu.M. Zharinov BINP SB RAS, Novosibirsk, Russia Yu. A. Rogovsky NSU, Novosibirsk, Russia
	The VEPP-2000 is a modern electron-positron collider at BINP. Last season in 2012–2013 was dedicated to the energy range of 160520 MeV per beam. The application of round colliding beams concept along with the accurate orbit and lattice correction yielded the high peak luminosity of 1.21031 cm^-2s⁻¹ at 500 MeV with average luminosity of 0.91031 cm^-2s⁻¹ per run. The peak luminosity limited only by beam-beam effects, while average luminosity – by present lack of positrons in whole energy range of 1601000 MeV. To perform high luminosity at high energies with small dead time the top-up injection is needed. At present new electron and positron injection complex at BINP is commissioned and ready to feed VEPP-2000 collider with intensive beams with energy of 450 MeV. Last calendar 2014 year was dedicated to the full/partial upgrade of complex's main parts.
	Slides TUY01 [4.152 MB]

THPSC16	Analysis of High Order Modes Damping Techniques for 800 MHz Single Cell Superconducting Cavities	HOM, cavity, damping, dipole	353
	Ya.V. Shashkov, N.P. Sobenin MEPhI, Moscow, Russia M. Zobov INFN/LNF, Frascati (Roma), Italy
	Funding: Research supported by RFBR grant 13-02-00562/14 and EU FP7 HiLumi LHC - Grant Agreement 284404 The High Luminosity LHC upgrade program foresees a possibility of using the second harmonic cavities working at 800 MHz for the collider bunch length variation. Such harmonic cavities should provide an opportunity to vary the length of colliding bunches. In order to supply the required harmonic voltage several single cell superconducting cavities are to be used. Different cavity designs and several higher order mode (HOM) damping techniques are being studied in order to reduce the cavity HOM impact on the beam stability and to minimize parasitic power losses. In this paper we analyze and compare the HOM electromagnetic characteristics and respective wake potential decay rates for cavities with grooves, fluted and ridged beam pipes. The problem of Lorentz force detuning is also addressed.

Paper

Title

Other Keywords

Page

TUY01

Status and Perspectives of the VEPP-2000 Complex

positron, collider, electron, injection

6

Yu. A. Rogovsky, D.E. Berkaev, A.S. Kasaev, I. Koop, A.N. Kyrpotin, A.P. Lysenko, E. Perevedentsev, V.P. Prosvetov, A.L. Romanov, A.I. Senchenko, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz, A.N. Skrinsky, I.M. Zemlyansky, Yu.M. Zharinov
BINP SB RAS, Novosibirsk, Russia
Yu. A. Rogovsky
NSU, Novosibirsk, Russia

The VEPP-2000 is a modern electron-positron collider at BINP. Last season in 2012–2013 was dedicated to the energy range of 160520 MeV per beam. The application of round colliding beams concept along with the accurate orbit and lattice correction yielded the high peak luminosity of 1.21031 cm^-2s⁻¹ at 500 MeV with average luminosity of 0.91031 cm^-2s⁻¹ per run. The peak luminosity limited only by beam-beam effects, while average luminosity – by present lack of positrons in whole energy range of 1601000 MeV. To perform high luminosity at high energies with small dead time the top-up injection is needed. At present new electron and positron injection complex at BINP is commissioned and ready to feed VEPP-2000 collider with intensive beams with energy of 450 MeV. Last calendar 2014 year was dedicated to the full/partial upgrade of complex's main parts.

Slides TUY01 [4.152 MB]

THPSC16

Analysis of High Order Modes Damping Techniques for 800 MHz Single Cell Superconducting Cavities

HOM, cavity, damping, dipole

353

Ya.V. Shashkov, N.P. Sobenin
MEPhI, Moscow, Russia
M. Zobov
INFN/LNF, Frascati (Roma), Italy

Funding: Research supported by RFBR grant 13-02-00562/14 and EU FP7 HiLumi LHC - Grant Agreement 284404
The High Luminosity LHC upgrade program foresees a possibility of using the second harmonic cavities working at 800 MHz for the collider bunch length variation. Such harmonic cavities should provide an opportunity to vary the length of colliding bunches. In order to supply the required harmonic voltage several single cell superconducting cavities are to be used. Different cavity designs and several higher order mode (HOM) damping techniques are being studied in order to reduce the cavity HOM impact on the beam stability and to minimize parasitic power losses. In this paper we analyze and compare the HOM electromagnetic characteristics and respective wake potential decay rates for cavities with grooves, fluted and ridged beam pipes. The problem of Lorentz force detuning is also addressed.