Radiation Radiation from Inclined Targets from Inclined Targets as a Tool for Bunch as a Tool for Bunch Lengths Diagnostics Lengths Diagnostics L. Sukhikh 1 , G. Kube 1 , A. Potylitsyn 2 , B. Smit 3 , R. Ischebeck 3 , V. Schlott 3 1 - Deutsches Elektronen Synchrotron (DESY), Hamburg, Germany 2 - Tomsk Polytechnic University (TPU), Tomsk, Russia 3 – Paul Scherer Institute (PSI), Villigen, Switzerland
23
Embed
Resonant Diffraction Radiation from Inclined Targets as a Tool for Bunch Lengths Diagnostics
Resonant Diffraction Radiation from Inclined Targets as a Tool for Bunch Lengths Diagnostics. L. Sukhikh 1 , G. Kube 1 , A. Potylitsyn 2 , B. Smit 3 , R. Ischebeck 3 , V. Schlott 3 1 - Deutsches Elektronen Synchrotron (DESY), Hamburg, Germany - PowerPoint PPT Presentation
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Resonant Diffraction Resonant Diffraction RadiationRadiationfrom Inclined Targets as a from Inclined Targets as a Tool for Bunch Lengths Tool for Bunch Lengths DiagnosticsDiagnostics
L. Sukhikh1, G. Kube1, A. Potylitsyn2, B. Smit3, R. Ischebeck3, V. Schlott3
1 - Deutsches Elektronen Synchrotron (DESY), Hamburg, Germany2 - Tomsk Polytechnic University (TPU), Tomsk, Russia3 – Paul Scherer Institute (PSI), Villigen, Switzerland
ContentsContentsIntroductionTheoretical backgroundCalculation resultsExperiment status
INTRODUCTIONINTRODUCTION
Smith-Purcell RadiationSmith-Purcell Radiation
Leonid Sukhikh, DESY / DITANET Conference / 11.11.2011
Smith-Purcell radiation (SPR): - (virtual) photon diffraction at 1D grating - angular distribution wavelength-dependent
→ no additional spectrometer
Coherent SPR DiagnosticsCoherent SPR Diagnostics
Leonid Sukhikh, DESY / DITANET Conference / 11.11.2011
Waveguide ArrayPlate Filter
Carousel ofGratings
WinstonCone
Quartz Window
Optical System(11 pyroelectric detectors)
Courtesy G. Doucas, V. Blackmore (Oxford)
Measurement at 45 MeV, FELIX
G. Doucas et al., PRST 9 (2006) 092801
bunch length monitor based on Smith-Purcell radiation
V.Blackmore et al., PRST 12 (2009) 032803
Experiment at 28.5 GeV, SLAC
Proposed RDR ExperimentProposed RDR Experiment
Leonid Sukhikh, DESY / DITANET Conference / 11.11.2011
THEORETICAL THEORETICAL BACKGROUNDBACKGROUND
Problem geometryProblem geometry
Leonid Sukhikh, DESY / DITANET Conference / 11.11.2011
Beam parameters:Energy – 165 MeVBunch length – 70 – 250 umBunch transverse sizes are << impact-parameter h=20 mm
Grating parameters:Period – 700 umStrip – d/2Number of periods = 21In transverse direction the grating is infiniteThe grating thickness tends to zeroThe grating is ideally conducting
The detectors are situated in the far-field zoneL > 400 mm
Calculation formulaeCalculation formulae
Leonid Sukhikh, DESY / DITANET Conference / 11.11.2011