Zobrazeno 1 - 10
of 199
pro vyhledávání: '"D. Sagan"'
Publikováno v:
Physical Review Accelerators and Beams, Vol 21, Iss 2, p 021001 (2018)
At high proton-beam energies, beam-induced synchrotron radiation is an important source of heating, of beam-related vacuum pressure increase, and of primary photoelectrons, which can give rise to an electron cloud. We use the synrad3d code developed
Externí odkaz:
https://doaj.org/article/f622e72f98584280a499a7977a8a3b2b
Publikováno v:
Physical Review Accelerators and Beams, Vol 20, Iss 2, p 020708 (2017)
An accurate calculation of the synchrotron radiation flux within the vacuum chamber of an accelerator is needed for a number of applications. These include simulations of electron cloud effects and the design of radiation masking systems. To properly
Externí odkaz:
https://doaj.org/article/feaa5863341741d588ea4c45e6d52cc6
Autor:
M. P. Ehrlichman, A. Chatterjee, W. Hartung, B. Heltsley, D. P. Peterson, N. Rider, D. Rubin, D. Sagan, J. P. Shanks, S. T. Wang
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 17, Iss 4, p 044002 (2014)
In storage rings, horizontal dispersion in the rf cavities introduces horizontal-longitudinal (xz) coupling, contributing to beam tilt in the xz plane. This coupling can be characterized by a “crabbing” dispersion term ζ_{a} that appears in the
Externí odkaz:
https://doaj.org/article/8148c84ebfa34db89ba66a271e26ee2e
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 17, Iss 4, p 044003 (2014)
In 2008 the Cornell Electron/Positron Storage Ring (CESR) was reconfigured from an electron/positron collider to serve as a test bed for the International Linear Collider damping rings. One of the primary goals of the CESR Test Accelerator (CesrTA) p
Externí odkaz:
https://doaj.org/article/6582b2f34fce4c76a17adfbb82a0d093
Autor:
M. P. Ehrlichman, W. Hartung, B. Heltsley, D. P. Peterson, N. Rider, D. Rubin, D. Sagan, J. Shanks, S. T. Wang, R. Campbell, R. Holtzapple
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 16, Iss 10, p 104401 (2013)
Intrabeam scattering (IBS) limits the emittance and single-bunch current that can be achieved in electron or positron storage ring colliders, damping rings, and light sources. Much theoretical work on IBS exists, and while the theories have been vali
Externí odkaz:
https://doaj.org/article/730e1d1ba77248c4a369c07f72c17d3d
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 7, p 072804 (2011)
We describe a new technique for low-emittance tuning of electron and positron storage rings. This technique is based on calibration of the beam position monitors (BPMs) using excitation of the normal modes of the beam motion, and has benefits over co
Externí odkaz:
https://doaj.org/article/726d2ba01d8c4728ae78f92a17dbf152
Autor:
D. L. Rubin, M. Billing, R. Meller, M. Palmer, M. Rendina, N. Rider, D. Sagan, J. Shanks, C. Strohman
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 13, Iss 9, p 092802 (2010)
Low emittance tuning at the Cornell Electron Storage Ring (CESR) test accelerator depends on precision measurement of vertical dispersion and transverse coupling. The CESR beam position monitors (BPMs) consist of four button electrodes, instrumented
Externí odkaz:
https://doaj.org/article/6d8051e09842417382f1ca5efb991628
Autor:
D. Sagan
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 4, Iss 12, p 122801 (2001)
At the Cornell Electron/Positron Storage Ring, a fast luminosity monitor has been implemented. The monitor works by measuring the amplitude of oscillation of selected bunches while the corresponding opposing bunches are shaken. Signal-to-noise ratios
Externí odkaz:
https://doaj.org/article/cae59f685c604980b4b041f0460dcafe
Autor:
D. Sagan
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 3, Iss 10, p 102801 (2000)
The presence of quadrupole errors in a storage ring will lead to errors in the Twiss parameters and/or errors in the horizontal-vertical coupling. This in turn can lead to degradation of machine performance, such as a decrease in the luminosity. At t
Externí odkaz:
https://doaj.org/article/b879804d97984a0eaac213ac0f6d9c58
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 3, Iss 9, p 092801 (2000)
Measurement of the betatron phase in the vertical and horizontal planes as well as the transverse horizontal-vertical coupling is a standard procedure now used at the Cornell Electron/Positron Storage Ring. The measurement is made by shaking the beam
Externí odkaz:
https://doaj.org/article/21086608be714976b99e03be137b5a18