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This discussion explores the generation of THz radiation using various techniques, such as CTR and CDR, and the associated beam tests for CLEAR and LEETCHI. It also discusses the potential applications of THz radiation in science, security, and inspection.
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Discussion THz@CLEAR
THzGeneration • CTR using 0.5nC and bunchlength of 100fs : peak power of few uJ • CDR usingparabolictarget • Enhancedspectrumusingsub-picosecondbunch train structure • more monochromaticspectrum • Smith-Purcell • Reaching high-average power with LEETCHI • Using e-gun maybelimited to frequenciessmallerthan • 300W to kW in fundamental • Cherenkov in Meta-materials • Possiblyworking on LEETCHI and CLEAR
Simulatingdifferent scenario • To bedone for CLEAR • Comparing TR, DR, Smith-Purcell, Cherenkovor Cherenkov DR • To bedone for LEETCHI • ComparingSP and Cherenkov
Beam Tests • On CLEAR • TestingCoherent radiation from TR, DR, Smith-Purcell, Cherenkovor Cherenkov DR • Measuringpeak power for single bunch • On LEETCHI • Need new hardware and modifications of the beam line • Possiblytesting CSP or Cherenkov
THzDetection • EO SD or EO up-conversion for short bunchlength • EO Spectral decoding • We have equipments to test up to 100GHz • for shorterwavelengthweneed new detectors –pushing the tests in 2018
CLEAR and LEETCHI • Whatbeamparameters ? • For CLEAR, Bunchlength ? Trains ? • For LEETCHI : Beamenergy? Current ? • Infrastructure needed to carry ourbeam tests • Synergywithotherexperiments • Missinghardware • Solenoid and Experimentalchamber for LEETCHI • Specificbeammanipulation: RF deflector, scraper, • Whenwould the test beready to beperformed and how muchbeam time isneeded ? • What contribution to expectfromexternalpartners ? Material and Manpower,
THz applications • Applications • In science • Identification of chemical component • Measuringpermeability • Transientphenonema • In Security –detection of explosive, drug • In inspection for Food quality / pharmacproduct • Generation • Using laser – 1u • Using SR –higher flux and wideband • Using laser induced breakdown in air