Results 21 to 30 of about 131,717 (268)

Measurements on Beam-Beam Interaction at SPEAR [PDF]

IEEE Transactions on Nuclear Science, 1973
Measurements of luminosity at SPEAR, which were performed at different operational conditions of the storage ring are shown and discussed. The parameters varied are: the current in both beams, the minimum betatron amplitude functions at the collision point, the energy and the vertical betatron frequencies.
M. A. Allen, M. Breidenbach, J. -E. Augustin, A. Boyarski, W. Davies-White, N. Dean, G. Fischer, J. L. Harris, L. Karvonen, R. R. Larsen, M. J. Lee, H. L. Lynch, R. McConnell, P. Morton, J. E. Paterson, J. Rees, B. Richter, A. Sabersky, R. Scholl, R. Schwitters, J. Voss, H. Wiedemann, H. Wiedemann   +22 more
openaire   +1 more source

Fully 3D multiple beam dynamics processes simulation for the Fermilab Tevatron

Physical Review Special Topics. Accelerators and Beams, 2010
We present validation and results from a simulation of the Fermilab Tevatron including multiple beam dynamics effects. The essential features of the simulation include a fully 3D strong-strong beam-beam particle-in-cell Poisson solver, interactions among
E. G. Stern, J. F. Amundson, P. G. Spentzouris, A. A. Valishev   +3 more
doaj   +1 more source

Beam-Beam interactions [PDF]

, 2011
In high energy storage-ring colliders, the nonlinear effect arising from beam-beam interactions is a major source that leads to the emittance growth, the reduction of beam life time, and limits the collider luminosity. In this paper, two models of beam-beam interactions are introduced, which are weak-strong and strong-strong beam-beam interactions.
openaire   +2 more sources

Noninvasive LHC transverse beam size measurement using inelastic beam-gas interactions

Physical Review Accelerators and Beams, 2019
The beam-gas vertex (BGV) detector is an innovative instrument measuring noninvasively the transverse beam size in the Large Hadron Collider (LHC) using reconstructed tracks from beam-gas interactions.
A. Alexopoulos, C. Barschel, E. Bravin, G. Bregliozzi, N. Chritin, B. Dehning, M. Ferro-Luzzi, M. Giovannozzi, R. Jacobsson, L. Jensen, R. Jones, V. Kain, R. Kieffer, R. Matev, M. Rihl, V. Salustino Guimaraes, R. Veness, S. Vlachos, B. Würkner, A. Bay, F. Blanc, S. Giani, O. Girard, G. Haefeli, P. Hopchev, A. Kuonen, T. Nakada, O. Schneider, M. Tobin, Z. Xu, R. Greim, T. Kirn, S. Schael, M. Wlochal   +33 more
doaj   +1 more source

Cationic‒anionic dye mixtures in writing inks: A straightforward multianalytical approach for minute samples

Talanta Open
A minimally invasive analytical protocol was developed to characterize cationic‒anionic dye mixtures in minute samples from 20th/21st-century writing inks taken from literary works.
Teodora Raicu, Matea Krmpotić, Zdravko Siketić, Iva Bogdanović Radović, Katja Sterflinger, Dubravka Jembrih-Simbürger   +5 more
doaj   +1 more source

Space charge compensation studies of hydrogen ion beams in a drift section

Physical Review Special Topics. Accelerators and Beams, 2007
Demands of high intensity beams are increasing for material science and engineering applications. To control the high intensity beam dynamics, the nonlinear space charge forces, produced by the beam and the residual plasma at low energy, have to be ...
A. BenIsmail, R. Duperrier, D. Uriot, N. Pichoff   +3 more
doaj   +1 more source

Optimisation of the CLIC positron capture LINAC taking into account Beam Loading effects [PDF]

EPJ Web of Conferences
This paper investigates Beam Loading in the positron source capture Linac of the Compact Linear Collider (CLIC). Beam Loading, caused by interactions between beam with accelerating cavities, leads to a reduction in the accelerating gradient, negatively ...
Mesbah Nafiseh, Doebert Steffen, Dayyani Kelisani Mohsen, Latina Andrea, Zhao Yongke, Olivares Herrador Javier   +5 more
doaj   +1 more source

Beam-Beam Interactions [PDF]

, 2003
At the interaction point of a particle accelerator, various phenomena occur which are known as beam-beam effects. Incident bunches of electrons (or positrons) experience strong electromagnetic fields from the opposing bunches, which leads to electron deflection, beamstrahlung and the creation of electron/positron pairs and hadrons due to two-photon ...
openaire   +1 more source

Two Dimensional Simulation of Beam Injection Into Neutral Plasma [PDF]

Journal of Astronomy and Space Sciences, 1990
Two dimensional electrostatic model was used to investigate the interactions between bean electron and neutral plasma. It was found that results heavily depend on the beam density.
Jong Ho Seon, Kyoung Wook Min
doaj  

Effect of electron disruption in the energy recovery linac based electron ion collider

Physical Review Special Topics. Accelerators and Beams, 2010
Beam-beam effects present one of the major factors limiting the luminosity of colliders. In the energy recovery linac (ERL) based eRHIC design, the electron beam, accelerated in a superconducting ERL, collides with the proton beam circulating in the RHIC
Y. Hao, V. Ptitsyn
doaj   +1 more source