PPT-DB Klystron Modulators R&D Status

Dr Davide Aguglia TEEPC CLIC Project Meeting 12 CERN 24 th May 2013 Work Package description amp Specifications RampD strategy and collaborations Solutions under study Ongoing work. Square wave operation the klystron output frequency Note Note brPage 4br Exercise 2 Mode studies on oscilloscope Figure 3 Set up for oscilloscope studies of the klystron the reflector voltage axis the power axis Figure 4 A mode pattern the modetop f brPage 1br photoelastic modulators Birefringence Measurement brPage 2br photoelastic modulators Birefringence Measurement brPage 3br photoelastic modulators Birefringence Measurem Biological status Legal status Conservation status BreedingCountryside ActGeneral GeneralProtection(UK) Species of EC Birds DirectiveMigratoryAll-Ireland VertebrateRed Data Book 2. Population data Po Biological status Legal status Conservation status BreedingCountryside Act GeneralProtection(UK) Species of EC Birds DirectiveMigratoryAll-Ireland VertebrateRed Data Book 2. Population data Populatio Biological status Legal status Conservation status BreedingCountryside Act GeneralProtection(UK) Species of Wintering 2. Population data Population sizes (individuals) Selection thresholds Totals in Biological status Legal status Conservation status BreedingCountryside Act GeneralProtection(UK) Species of EC Birds DirectiveMigratoryAll-IrelandVertebrate RedData Book 2. Population data Population Biological status Legal status Conservation status Breeding GeneralProtection(UK) Species of EC Birds Directive 2. Population data Population sizes (pairs) Selection thresholds Totals in species John Moss. Lead Engineer, . Linac. RF. February 17, 2016. Linac. RF Overview. Performance and Availability. Klystrons. High Power Circulators. Low Level Radio . Frequency Systems. Equipment Obsolescence. LINAC LOW ENERGY MODULATORS status update FERMILAB DESIGN Howie Pfeffer /Jim Biggs 12/19/12 Fermilab specs SOME OF THE TOUGH SPECS: Beam Top Tilt (Adj.): +/- 5 kV Beam Voltage Step SR: 15 kV/ usec D. Valuch, A. . Mikkelsen. , G. . Ravida. , O. Brunner. LHC RF power system. Total 16 klystrons Thales TH2167. 400.8 MHz, 330 kW, at nominal 58 kV, 9.2 A . One . klystron per cavity. Four klystrons supplied by one HV supply. Michael Read. Calabazas Creek Research. Presented at CERN Aug 30, 2013. mike@calcreek.com. PPM Focusing. Eliminates large magnet power supplies. Reduces operating and capital costs. Conventional klystron magnet power supplies can consume more than 4% of average power of klystron. Eckoldt. CERN . Accelerator. School. Baden, May 2014. Structure. Why long pulses?. Where are long pulse modulators used? . Basics. RF-Station. Klystron. Modulators. Passive . components. Active. . components. rf. test stand at CERN. J. Kovermann. , G. . McMonagle. , S. Doebert, N. Catalan-Lasheras, I. Syratchev, W. Wuensch,. G. . Riddone. , . S.Curt. , S. Rey, L. . Timeo. , E. Paju, K. . Schirm. , M. . High Frequency Limitations of Conventional Tubes. :. 1. Circuit reactance. . i. ) Inter electrode capacitance. ii) Lead Inductance effects. 2. Transit time effect. 3. Gain Bandwidth limitation.