نتایج جستجو برای Piezoelectric beam

تعداد نتایج: 67489  

2005
Tanaji Sen,

Simulations of beam-beam phenomena in the Tevatron and RHIC as well for the LHC are reviewed. The emphasis is on simulations that can be closely connected to observations.

2004
H. Siemann,

For a moment consider a single beam in a storage ring. Individual particle motions are linear at small amplitudes with tunes, optical functions, and, in the case of electrons, synchrotron radiation properties determined by the dipoles, quadrupoles, and RF system. At larger amplitudes, intentional and unintentional field ndinearities lead to amplitude dependent tunes, nonlinear resonances, and a...

Journal: :نشریه دانشکده فنی 0
علی ناصریان, دانشگاه فردوسی مشهد مسعود طهانی, دانشگاه فردوسی مشهد,

the levy-type analytical solution is employed for the problem of bending of cross-ply and antisymmetric angle-ply piezoelectric hybrid laminated plates with at least two simply supported opposite edges. the governing equations of equilibrium are derived in the framework of the first-order shear deformation plate theory. the equations are classified according to the crystallography type of piezo...

1990
Kaoru Yokoya,

The beam-beam interaction in electron-positron linear colliders shows very di erent aspects from that in storage rings. The single-pass nature of the linear colliders allows drastic deformation of the bunch shape during one collision. Also, under the very strong electro-magnetic eld together with the high beam energy, phenomena which are not important in storage rings come into play, namely the...

1989
PISIN CHEN, P. CHEN,

. Abstract It has recently been recognized that in future linear colliders, there is a finite probability that the beamstrahlung photons will turn into e+epairs induced by the same beam-beam field, and this would potentially cause background problems. In this paper, we first review the probability of such a coherent pair creation process. It is seen that the constraint on the beamstrahlung para...

2009
A. Novokhatski, S. Heifets,

Fields induced by a beam and penetrated outside the beam pipe can be used for a beam diagnostic. Wires placed in longitudinal slots in the outside wall of the beam pipe can work as a beam pickup. This has very small beam-coupling impedance and avoids complications of having a feed-through. The signal can be reasonably high at low frequencies. We calculate the beam-coupling impedance due to a lo...

1998
D. Schulte,

While the bunches in a linear collider cross once only, due to their small size they experience a strong beam-beam effect. Guinea-Pig is a code to simulate the impact of this effect on luminosity and background. A short overview of the program is given, with examples of its application to the background studies for TESLA, the top threshold scan and a possible luminosity monitor; as well as some...

1980
K. L. Brown,

Ray optics and phase ellipse Optics are developed as tools for designing charged particle beam guidance systems. Specific examples of basic optical systems and of phase ellipse matching are presented as illustrations of these mathematical techniques. Presented at the Conference on Charged Particle Optics Giessen, West Germany September 8-12, 1980 also submitted to Nuclear Instruments and Method...

1996
T. Chen, J. Irwin, R. H. Siemann,

Our beam-beam simulation code[1] has been improved and used to study lifetime phenomena under beam-beam interaction. One phenomenon observed is high order horizontal resonances (e. g., 8th to 16th), which are found to be exceptionally strong in the horizontal tail and have significant impact on lifetime. A first order perturbation calculation gives good agreement with the simulation on resonanc...

1992
W. Kozanecki,

We study the applicability of beam-beam deflection techniques as a tuning tool for asymmetric B factories, focusing on PEP-II as an example. Assuming that the closed orbits of the two beams are separated vertically at the interaction point by a local orbit bump that is nominally closed, we calculate the residual beam orbit distortions due to the beam-beam interaction. Difference orbit measureme...

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