PPT-An X-band transverse deflecting cavity for longitudinal phase space measurements

R Apsimon Lancaster University Cockcroft Institute Motivation Currently bunch length and energy spread measurements done with separate diagnostics Cant reconstruct the longitudinal phase space. evolution of LHC beams in the PSB from . Linac4. (Actions follow-up). V. Forte (BE/ABP-HSC) . D. Quartullo (BE/RF-BR). 08/12/2014. Previously. Linac. 4 bunches. (113 . keV. , 336 . keV. , 592 . keV. Dave McGinnis. December 7, 2010. Longitudinal Dampers. Booster Cavities are transmission line structures.. Higher order transmission line modes ~80 MHz. Passive mode dampers connected to coupling . flaps d-Q . simulated LOLA measurement. *. : no transverse beam dimensions. imaging: entrance-LOLA to OTR. simulated LOLA measurement. *. : . gaussian. transverse shape. about coupler kick (=CK). *. measurements 16. . Bellringer. : What is A wave? (define, use Ch.22 in your book to help you). What is an example of a wave?. General definitions of vibrations and waves. Vibration. : in a general sense, anything that switches back and forth, to and fro, side to side, in and out, off and on, loud and soft, or up and down is . bunch instabilities in the CERN PS. Acknowledgments: . H. . . Damerau, S. Gilardoni, M. Migliorati, G. Sterbini.. Speaker: L. . . Ventura . . LIU. -PS Student . Day. 21 April 2015. Bunches at 5 to 50 MeV. LOLA . (Greg . Lo. ew. , Rudy . L. arsen and Otto . A. ltenmueller. ). REGAE . (. Re. lativistic . E. electron. . G. un . for . A. tomic . E. xploration). a. first idea about numbers. Overview.  . Patrick Krejcik. Yuantao . Ding, Joe Frisch.  . Layout of the Undulator to Dump Beam Line . OTRDMP. Simulation . example - Yuantao Ding. . low charge 20pC soft x-rays. head. FEL ON. . Before the waves are made the particles are same distance apart. While waves moves through the medium the particles . compress. together, then they spread further apart (stretched areas)- . rarefaction.. Dr G Burt. (most slides borrowed from Ben Woolley and . Shok. Karimian). XbFEL. meeting 28. th. July . 2015. Deflecting . Cavities. . Beam. Magnetic field. . horizontal. Electric Field. Deflecting . Course objectives:. Give an overview of the longitudinal dynamics of beam particles in accelerators. Understand the issue of synchronization between the particles and the accelerating cavity. The course will focused on synchrotrons and the synchrotron motion. Pillbox Cavities • Transverse Electric (TE) modes Transverse Magnetic (TM) modes imnmmzearJArE,1, ztnmztEaikE2,2 ztnmtEzaiHˆ2,2 imnmmzearJArH,1', ztnmztHaikH2,2' ztnmtHzaiEˆ'2,2 µεω amplitude, frequency, wavelength, speed, phase, phase difference, . c . = . f . λ. . f . = . 1/. T . Phase difference may be measured as angles (radians and degrees) or as fractions of a cycle. . . Simulation parameters. Results. Discussion. Mohsen Dayyani Kelisani (IPM/CERN) and Steffen Doebert (CERN). CompactLight. ,Injector Meeting, 13-15.11.2019. Injector Design. 262. 0.3. 3.0-. 75. 262. 0.3. Twiss . Parameters . in . the SNS linac. Andrei Shishlo. ORNL. SNS Project . Florence, Italy. November . 2015. Outline. Physics picture description. Harmonics analysis. Short RF cavity +drift+ BPM. Algorithm.