Cumulative Beam Breakup in Linear Accelerators with Arbitrary Beam Current Profile*
نویسندگان
چکیده
An analytical formalism for the solution of cumulative beam breakup in linear accelerators with arbitrary beam current profile is developed. It is applied to obtain an expression for the transverse displacement of trains of finite bunches. The same formalism is used to investigate the beam breakup-enhanced displacement of beams caused by the misalignment of the deflecting structures or focusing elements.
منابع مشابه
The dosimetry assessment of Varian Linear Accelerators of 6, 15 and 20 MV by Monte Carlo Method
Introduction: Monte Carlo method is often applied in radiation therapy as utilized in all the branches of science. An important requirement for successful radiotherapy is carefully examine the dose distribution specifications and decrease the difference between these features with experience to an acceptable level. In this study, the characteristics of 6, 15 and 20 MeV incident x-rays are prov...
متن کاملMulti-pass Beam-breakup: Theory and Calculation
ERL 04-7 Prodeedings EPAC04, Lucerne/CH (2004) Multi-pass, multi-bunch beam-breakup has been long known to be a potential limiting factor for the current in linac-based recirculating accelerators. New understanding of theoretical and computational aspects of the phenomenon are presented here. We also describe a detailed simulation study of BBU in the proposed GeV Energy Recovery Linac light sou...
متن کاملCommissioning measurements for photon beam data on three TrueBeam linear accelerators, and comparison with Trilogy and Clinac 2100 linear accelerators
This study presents the beam data measurement results from the commissioning of three TrueBeam linear accelerators. An additional evaluation of the measured beam data within the TrueBeam linear accelerators contrasted with two other linear accelerators from the same manufacturer (i.e., Clinac and Trilogy) was performed to identify and evaluate any differences in the beam characteristics between...
متن کاملExperimental investigation of multibunch, multipass beam breakup in the Jefferson Laboratory Free Electron Laser Upgrade Driver
In recirculating accelerators, and, in particular, energy-recovery linacs, the maximum current can be limited by multipass, multibunch beam breakup (BBU), which occurs when the electron beam interacts with the higher-order modes (HOMs) of an accelerating cavity on the accelerating pass and again on the energy recovering pass. This effect is of particular concern in the design of modern high ave...
متن کاملاندازهگیری نیمرخ باریکه شتاب دهنده 200ES- با استفاده از نمایشگر الکترون ثانویه
Up to now, different designs have been introduced for measurement beam profile accelerators. Secondary electron emission monitors (SEM) are one of these devices which have been used for this purpose. In this work, a SEM has been constructed to measure beam profile of ES-200 accelerator, a proton electrostatic accelerator which is installed at SBU. Profile grid for both planes designed with 16 w...
متن کامل