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Development of filter-like cavities for axion DM searches (RADES project)¶

Development of filter-like cavities for axion DM searches (RADES project)¶. 63 rd CAST collaboration meeting January 24, 2017

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Development of filter-like cavities for axion DM searches (RADES project)¶

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  1. Development of filter-like cavities for axion DM searches (RADES project)¶ 63rd CAST collaboration meeting January 24, 2017 Antonio José Lozano Guerrero, Alejandro Álvarez Melcón, Benito Gimeno Martínez, Igor García Irastorza, Javier Redondo, Carlos Peña, Juan Daniel Gallego and Alejandro Díaz Morcillo antonio.lozano@upct.es

  2. INDEX Theory • Proposed structure: several microwave cavities • Resonant frequencies • Electric Field patterns • Form factor • Quality factor • Simulation software (CST and HFSS) 5 cavitieswithmetallicwalls 5 cavities with metallic walls and rounded edges 5 cavities with metallic walls, rounded edges and 2 probes 5 cavities with metallic walls manufacturing Ventingholes, probe position and configuration Important dates for RADES cavity Present and FutureActions and Tasks 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  3. Theory • Proposed structure: several microwave cavities • Resonant frequencies • Electric field patterns • Form factor • Quality factor • Simulation software • CST • HFSS 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  4. 5 cavitieswithmetallicwalls • HFSS • CST Mode 1 Electric field fr1=8.42066280 GHz(GHz) fr1= 8.421289115GHz(GHz) Q1=7156.9 (GHz) Q1=6591.9 (GHz) C1=0.6902 (GHz) 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  5. 5 cavitieswithmetallicwalls and roundededges • CST • HFSS 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  6. 5 cavitieswithmetallicwalls, roundededges and 2 probes • CST • HFSS 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  7. 5 cavitieswithmetallicwalls, roundededges and 2 probes • Scattering parameters • CST • HFSS • Input/output probes are designed for critical coupling • S11 • S21 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  8. 5 cavities with metallic walls manufacturing • Manufacturing • Fabrication model (Solidworks) • Rounded Edges 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  9. 5 cavities with metallic walls manufacturing • Manufacturing • 90º connector • 3D Model 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  10. VentingHoles, probe position and configuration • E-Field H-Field Final issues are beingconsidered 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  11. Important dates for RADES cavity Cavity manufacturing started 16/01/2017 16/01/2017 Data acquisition system started 24/02/2017 Cavity manufactured 24/03/2017 Cavity coating 28/04/2017 Cavity EM characterization 28/04/2017 Data acquisition system trials May 2017 Cavity installation Expected 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  12. Present and FutureActions and Tasks • Study of venting holes and critical coupling • Final considerations are being taken into account to start the 5 cavities filter manufacturing • Data acquisition system is being developed • Studies considering just one port are an interesting alternative and more work is envisaged in this direction • Analysis of mechanical tolerances • Platform for mounting the filter structure used by CAPP group has to be explored 63rd CAST collaboration meeting Geneva, Switzerland, Jan 24, 2017

  13. Development of filter-like cavities for axion DM searches (RADES project)¶ 63rd CAST collaboration meeting January 24, 2017 Antonio José Lozano Guerrero, Alejandro Álvarez Melcón, Benito Gimeno Martínez and Igor García Irastorza antonio.lozano@upct.es Thankyou!

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