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Status of the Front End Test Stand Radio Frequency Quadrupole

Status of the Front End Test Stand Radio Frequency Quadrupole. Ajit Kurup UK Neutrino Factory Meeting 7 th September 2005. Introduction. Status of electromagnetic simulations using MAFIA, Superfish and Microwave Studio for a 324MHz RFQ. 4 vane simulations with MAFIA, SF and MWS.

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Status of the Front End Test Stand Radio Frequency Quadrupole

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  1. Status of the Front End Test Stand Radio Frequency Quadrupole Ajit Kurup UK Neutrino Factory Meeting 7th September 2005

  2. Introduction • Status of electromagnetic simulations using MAFIA, Superfish and Microwave Studio for a 324MHz RFQ. • 4 vane simulations with MAFIA, SF and MWS. • 4 rod simulations with MWS. • q-value calculations and surface current/power density plots. • Pete Savage has been looking at engineering models and manufacturing tests. Ajit Kurup

  3. 4 vane RFQ and MAFIA 3.06mm 3.6mm 0.264m f = 318.503 MHz q-value = 12265 Electric field Ajit Kurup

  4. 4 vane RFQ and MAFIA (2) Power density Magnetic field Ajit Kurup

  5. 4 vane RFQ and Superfish 200 Mesh lines in x and y f = 323.100 MHz Ajit Kurup

  6. 4 vane RFQ and Microwave Studio Electric field Surface Current f = 319.044 MHz q-value = 12895 Ajit Kurup

  7. Meshing Stability and Relative Error Microwave Studio MAFIA Superfish Relative error = 0.75% Ajit Kurup

  8. 75mm 64mm 4 rod RFQ Designs Electric field f = 281.865 MHz q-value = 4474 Surface Current Ajit Kurup

  9. Engineering Models Ajit Kurup

  10. Rod Modulations Turned rod Height (m) Length (m) Milled rod Ajit Kurup

  11. Conclusions and Future Plans • Reasonable agreement between MAFIA, SF and MWS. • Estimated relative error of 0.75% should easily be within tuning capability • Plan • Do rod manufacturing tests. • Build cold models to test EM simulations • 4 vane scheduled for completion end of this year. • 4 rod scheduled for completion end of spring next year. Ajit Kurup

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