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in creator/contributor: "Stupakov, G."  
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Absolute Bunch Length Measurements at the ALS by Incoherent Synchrotron Radiation Fluctuation Analysis

Description: By analyzing the pulse to pulse intensity fluctuations of the radiation emitted by a charge particle in the incoherent part of the spectrum, it is possible to extract information about the spatial distribution of the beam. At the Advanced Light Source (ALS) of the Lawrence Berkeley National Laboratory, we have developed and tested a simple scheme based on this principle that allows for the absolute measurement of the bunch length. A description of the method and the experimental results are pre… more
Date: January 24, 2008
Creator: Filippetto, D.; /Frascati; Sannibale, F.; Zolotorev, Max Samuil; /LBL, Berkeley; Stupakov, G.V. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Terahertz Radiation from a Pipe with Small Corrugations

Description: We have studied through analytical and numerical methods the use of a relativistic electron bunch to drive a metallic beam pipe with small corrugations for the purpose of generating terahertz radiation. For the case of a pipe with dimensions that do not change along its length, we have shown that - with reasonable parameters - one can generate a narrow-band radiation pulse with frequency {approx}1 THz, and total energy of a few milli-Joules. The pulse length tends to be on the order of tens of … more
Date: January 26, 2012
Creator: Bane, K. L. F. & Stupakov, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Direct Measurement of the Transverse Wakefields of Tapered Collimators

Description: We report on a recent set of measurements of the transverse wakefields from longitudinally-tapered collimators. The measurements were performed with a low-emittance 1.19 GeV beam in the SLAC linac by inserting a collimator aperture into the beam path and reconstructing the vertical deflection of the beam as a function of the vertical position of the aperture. Each collimator in the experiment was designed to present a relatively large transverse impedance and to minimize the impedance from othe… more
Date: January 9, 2007
Creator: Tenenbaum, P.; Bane, K. L. F.; Eriksson, L.; Irwin, J.; Jobe, R. K.; McCormick, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Study of the trapped modes at the vacuum ports

Description: Pumping ports in PEP-II vacuum chamber will be shielded with slots cut in the walls of the beam pipe. The number of slots n{sub s}, their length l, and width w are defined by the required pumping conductance. The present design has 40 slots around the stainless steel round pipe in the straight sections, and, for the rectangular copper chamber of the arcs, there are 18 slots placed in upper and lower decks. Here we want to address two potential problems related to the slots: radiation of the TE … more
Date: January 1, 1995
Creator: Heifets, S. & Stupakov, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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