نتایج جستجو برای: betatron
تعداد نتایج: 574 فیلتر نتایج به سال:
The oscillating relativistic electrons in the accelerating/focusing wakefields of plasma accelerators emit electromagnetic radiation known as betatron (BR). proton-driven wakefield acceleration has been demonstrated Advanced Wakefield Experiment (AWAKE) at CERN; however, its accompanying emission is less explored compared with those laser- and electron beam-driven accelerators. In this paper, a...
Gail D. Adams was one of the founding members of both AAPM and ACMP. He helped shape the profession that all of us enjoy today. Gail had a major impact on scientific and professional activities. His pioneering efforts were felt in all areas of medical physics and radiation oncology. Gail was very clinical and he participated as a partner of the radiation oncologist in the radiation treatment pr...
The 5th order nonlinear resonance was studied at SRRC's electron storage ring, which has working tunes around νx = 7.23 and νy = 4.17. This resonance is interesting due to the possible systematic errors from its 6-fold symmetry lattice design. In order to understand the dynamics of resonance and effects of betatron decoherence and linear coupling, experiments have been performed using the 2-BPM...
An experiment investigating the photoelectron instability has been performed in BEPC at IHEP, China. The betatron oscillation of each bunch was observed and recorded by a single pass beam position monitor system which has a capability to measure the transverse position of every bunch over 16000 turns. The effect of an octupole magnet on the instability was also studied. This paper describes res...
A method is described to make a direct measurement of the horizontal and vertical momentum dispersion of the electron and positron beams as they pass through the chromatic correction sections (CCS) of tbe SLC final focus systems. The metbod is advantageous since it cleanly separates betatron components of the beam size from dispersive components, can be measured during standard colliding beams ...
Due to the presence of fringe ®eld on both magnet edges, the real trajectory traced out by the beam will deviate from expectation. The integral dipole strength seen by the beam will then have a discrepancy to design value. The beam tracing method is employed to correct fringe ®eld effect and to calibrate integral dipole strength of the bending magnets by tuning magnet current. Final correction ...
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