High Brightness Electron Beam Diagnostics and their ... - CASA
High Brightness Electron Beam Diagnostics and their ... - CASA
High Brightness Electron Beam Diagnostics and their ... - CASA
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Parabolic<br />
off-axis<br />
reflector<br />
~ 300 mm<br />
Wire Grid Polarizer<br />
Figure5.11:Overviewoftheopticstoguidethecoherenttransitionradiationemittedfroman aluminumfoiltotheentranceoftheinterferometer.<br />
Air Actuator<br />
to insert TR radiator<br />
Plano-convex<br />
into the beam path<br />
Light shield<br />
lens (f<br />
IR<br />
=125 mm)<br />
mirror(M1)ismountedonamicropositionerthatcantranslateby1msteps.Twopicomo-<br />
<strong>Beam</strong><br />
direction<br />
optical port<br />
Aluminum Foil<br />
sitivearea.Itisan-oaxisgold-sputteredreectorwithafocallengthof10cm. Theplanarmirrorsarest<strong>and</strong>ardopticalcircularmirrorsof50:8mmdiameter.Themovable Theparabolicreectorisusedtofocusanincomingcollimatedbeamontothedetectorsentorsarealsomountedonthemirrorgimbalmountsthatcanbeusedremotelytoadjustthe horizontal<strong>and</strong>verticalinclinationofthemirrortomakesureitiscoplanarwiththeimageof thexedmirror(M2)throughthebeamsplitter.<br />
"Switcher" Mirror<br />
~ 600 mm 125 mm<br />
ThepolarizinginterferometerisdepictedinFig5.12:Let'srstanalyzehowapolarizinginterfer- 5.5.2TheoryofOperation ometerworksinthesimplistic(usual)caseofaplaneTEMwave.Afterward,wewillrenethis TheGolaycell(seeFig.5.7)<strong>and</strong>itsacquisitionsystemhavebeendescribedpreviously.<br />
analysisincludingtheeectduetoTRelectriceld. Let!E(t)betheelectriceldincomingintotheinterferometer.Whenthiseldentersthe<br />
~ 400 mm<br />
~ 300 mm<br />
Fixed Mirror<br />
Wire Grid Polarizer<br />
Movable Mirror<br />
Golay Cell Detector
Change language