Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Raubenheimer, T O"'
We present results from luminosity, energy and polarization studies at a future Linear Collider. We compare e+e- and e-e- modes of operation and consider both NLC and TESLA beam parameter specifications at a center-of-mass energy of 500 GeV. Realisti
Externí odkaz:
http://arxiv.org/abs/physics/0403037
Publikováno v:
Phys.Rev.ST Accel.Beams 6 (2003) 104404
Coherent Synchrotron Radiation (CSR) can play an important role by not only increasing the energy spread and emittance of a beam, but also leading to a potential instability. Previous studies of the CSR induced longitudinal instability were carried o
Externí odkaz:
http://arxiv.org/abs/physics/0305107
Autor:
Jones, R. M., Li, Z., Miller, R. H., Raubenheimer, T. O., Ruth, R. D., Stupakov, G. V., Wang, J. W., Kroll, N. M.
Earlier RDDS (Rounded Damped Detuned Structures) [1,2], designed, fabricated and tested at SLAC, in collaboration with KEK, have been shown to damp wakefields successfully. However, electrical breakdown has been found to occur in these structures and
Externí odkaz:
http://arxiv.org/abs/physics/0206090
Compensation of optics errors at the Interaction Point (IP) is essential for maintaining maximum luminosity at the NLC. Several correction systems (knobs) using the Final Focus sextupoles have been designed to provide orthogonal compensation of linea
Externí odkaz:
http://arxiv.org/abs/physics/0206068
Realistic calculation of NLC luminosity has been performed using particle tracking in DIMAD and beam-beam simulations in GUINEA-PIG code for various values of beam emittance, energy and beta functions at the Interaction Point (IP). Results of the sim
Externí odkaz:
http://arxiv.org/abs/physics/0206044
Autor:
Nosochkov, Y., Raubenheimer, T. O.
We explore the NLC linac optics compatible with a low energy scenario where initially only part of the full linac is installed. Optics modification suitable for a low energy beam running and upgrade to the nominal energy is discussed. Linac parameter
Externí odkaz:
http://arxiv.org/abs/physics/0203029
Autor:
Jones, R. M., Kroll, N. M., Higo, T., Li, Z., Miller, R. H., Raubenheimer, T. O., Wang, J. W.
Publikováno v:
Conf.Proc.C0106181:3810-3812,2001
Recent experiments at SLAC [1,2] and CERN [3] have revealed evidence of significant deformation in the form of "pitting" of the cells of the 1.8m series of structures DDS/RDDS (Damped Detuned Structure/Rounded Damped Detuned Structure). This pitting
Externí odkaz:
http://arxiv.org/abs/physics/0107049
Publikováno v:
Conf.Proc.C0106181:3825-3827,2001
Properties of the disrupted NLC beam at the Interaction Point (IP) and particle loss in the extraction line are analyzed as a function of beam-to-beam position and angular offset at IP. The simulations show that disruption and beam loss maximize when
Externí odkaz:
http://arxiv.org/abs/physics/0106061
The two main functions of the NLC extraction line include: 1) transmission of the outgoing disrupted beam and secondary particles to the dump with minimal losses; and 2) beam diagnostics and control. In this report, we describe the extraction line op
Externí odkaz:
http://arxiv.org/abs/physics/0106062
Autor:
Nosochkov, Y., Raubenheimer, T. O.
Publikováno v:
Conf.Proc.C0106181:3822-3824,2001
The NLC extraction line provides a secondary focal point with a low beta function and 2 cm dispersion which can be used for measurement of the beam energy spectrum. In this study, tracking simulations were performed to transport the 0.5 TeV electron
Externí odkaz:
http://arxiv.org/abs/physics/0106060