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M.B.A. in Business, University of Chicago, (1994)

Ph.D. in Applied Physics, California Institute of Technology, (1978)

M.S. in Engineering Science, California Institute of Technology, (1971)

Other in Engineering, Ecole Nationale Superieure d'Arts et Metiers, (1970)

Expertise

Articles

De Silva, S. U.. and Delayen, J. (2013). Cryogenic test of a proof-of-principle superconducting rf-dipole deflecting and crabbing cavity. Phys. Rev. ST Accel. Beams 16 (082001).

De Silva, S. U.. and Delayen, J. (2013). Design Evolution and Properties of Superconducting Parallel-bar rf-dipole Deflecting and Crabbing Cavities. Phys. Rev. ST Accel. Beams 16 (012004).

Hopper, C. S.. and Delayen, J. (2013). Superconducting spoke cavities for high-velocity applications. Phys. Rev. ST Accel. Beams 16 (102001).

Ahmed, S., Krafft, G., De Silva, S. U.., Delayen, J. and Spata, M. (2012). Beam dynamics studies for transverse electromagnetic mode type rf deflectors. PHYSICAL REVIEW SPECIAL TOPICS - ACCELERATORS AND BEAMS 15 (022001).

Hopper, C. S.. and Delayen, J. (2012). Multipacting Analysis of High-Velocity Superconducting Spoke Resonators. Proc. 2012 International Linear Accelerator Conference.

Olave, R., Delayen, J. and Hopper, C. S.. (2012). Multipole Expansion of the Fields in Superconducting High-Velocity Spoke Cavities. Proc. 2012 International Linear Accelerator Conference.

De Silva, S. U.. and Delayen, J. (2012). Multipole Field Effects for the Superconducting Parallel-Bar Deflecting/Crabbing Cavities. Proc. 2012 International Linear Accelerator Conference.

Delayen, J. (2012). Superconducting Spoke Cavities for Electron and High-Velocity Proton Linacs (Invited). Proc. 2012 International Linear Accelerator Conference.

Park, H., De Silva, S. U.. and Delayen, J. (2012). Characteristics and Fabrication of a 499 MHz Superconducting Cavity for the Jefferson Lab 12 GeV Upgrade. Proc. IPAC 2012.

De Silva, S. U. and Delayen, J. (2012). Design and Development of Superconducting Parallel-bar Deflecting/Crabbing Cavities. Proc. IPAC 201.

Castilla, A., Krafft, G. and Delayen, J. (2012). Design of Electron and Ion Cavities for an Ion Collider. Proc. IPAC 2012.

Gorelov, D., Boulware, C. H.., Grimm, T., De Silva, S. U.. and Delayen, J. (2012). Development of a Superconducting 500 MHz Multi-Spoke Cavity for Electron Linacs. Proc. IPAC 2012.

Hopper, C. S.., Olave, R. and Delayen, J. (2012). Development of Superconducting Spoke Cavities for High-velocity Applications. Proc. IPAC 2012.

Gorelov, D., De Silva, S. U.. and Delayen, J. (2012). Engineering of a Superconducting 400 MHz Crab Cavity for the LHC HiLumi Upgrade. Proc. IPAC 2012.

Ahmed, S., Krafft, G., Mammosser, J. D.., Spata, M., Wissmann, M. J.. and Delayen, J. (2012). High-power test of RF Separator for 12 GeV Upgrade of CEBAF at Jefferson Lab. Proc. IPAC 2012.

Li, Z., Ge, L., Delayen, J. and De Silva, S. U.. (2012). RF Modeling Using Parallel Codes ACE3P for the 400 MHz Parallel-Bar/Ridged Waveguide Compact Crab Cavity for the LHC HiLumi Upgrade. Proc. IPAC 201.

Anthony, P. L., Delayen, J., Fryberger, D., Goree, W. S., Mammoser, J., Szalata, Z. M. and Weisend II, J. G. (2009). Experimental Studies of Light Emission Phenomena in Superconducting RF Cavities. Nuclear Instruments and Methods in Physics research A 612 , pp. 1-45.

Delayen, J. and Wang, H. (2009). New Compact TEM-type Deflecting and Crabbing RF Structure. Phys. Rev. sT accel. Beams 12 (062002).

Wu, A., Mammosser, J., Phillips, L., Delayen, J., Reece, C., Wilkerson, A., Smith, D. and Ike, R. (2007). Smooth Nb Surfaces Fabricated by Buffered Electropolishing. Applied Surface Science 253 , pp. 3041-3052.

Delayen, J. (2006). Ponderomotive Instabilities and Microphonics - A Turtorial. Physica C 441 , pp. 1-6.

Delayen, J. (2005). Cumulative Beam Breakup in Linear Accelerators with Time-dependent Parameters. Phys. Rev. ST Accel. Beams 8 (024402).

Conference Proceeding

Ahmed, S., Delayen, J., Hofler, A. S.., Krafft, G. A.., Spata, M., Tiefenback, M. G.., Beard, K. B.., Deitrick, K. A.. and De Silva , S. U.. (2011). Beam Dynamics Studies of Parallel-bar Deflecting Cavities New York, NY: Proc. 2011 Particle Accelerator Conference.

Ahmed, S., Derbenev, Y. S.., Krafft, G. A.., Zhang, Y., Castilla, A., Delayen, J. and De Silva, S. U.. (2011). Crab Crossing Considerations for MEIC 2 New York, NY: Proc. 2011 Particle Accelerator Conference.

Delayen, J. and De Silva, S. U.. (2011). Design of Superconducting Parallel-bar Deflecting/Crabbing Cavities with Improved Properties New York, NY: Proc. 2011 Particle Accelerator Conference.

Delayen, J., De Silva, S. U.. and Hopper, C. S.. (2011). Design of Superconducting Spoke Cavities for High-velocity Applications New York, NY: Proc. 2011 Particle Accelerator Conference.

De Silva , S. U.. and Delayen, J. (2011). Fundamental and HOM Coupler Design for the Superconducting Parallel-bar Cavity New York, NY: Proc. 2011 Particle Accelerator Conference.

De Silva , S. U.. and Delayen, J. (2011). Multipacting Analysis of the Superconducting Parallel-bar Cavity New York, NY: Proc. 2011 Particle Accelerator Conference.

De Silva, S. Uddika. and Delayen, J. (2010). Design Sensitivities of the Parallel-bar Cavity Proc. LINAC 2010.

De Silva, S. Uddika. and Delayen, J. (2010). Higher Order Mode Properties of Superconducting Parallel-Bar Cavities Proc. IPAC 2010.

Graves, W., Brown, W., Moncton, D., Delayen, J., Krafft, G., Lewellen, J. Wesley., Grimm, T., Piot, P. Regis-Guy. and Legg, R. (2009). Accelerator Design of the MIT Compact X-Ray Source Project Proc. 2009 Particle Accelerator Conference.

Wang, H. and Delayen, J. (2009). Design of Superconducting Parallel Bar Deflecting and Crabbing RF Structures Proc. 2009 Particle accelerator Conference.

De Silva, S. Uddika. and Delayen, J. (2009). Design Optimization of Superconducting Parallel-Bar Cavities Proc. 2009 SRF Conference.

Hall, B., Burt, G., Smith, J. D.A., Rimmer, R., Wang, H., Delayen, J. and Calaga, R. (2009). Novel Geometries for the LHC Crab Cavities Proc. 2009 Particle Accelerator Conference.

Delayen, J., Spata, M. and Wang, H. (2009). Options for an 11 GeV RF Beam Separator for the Jefferson lab CEBaF Upgrade Proc. 2009 Particle Accelerator Conference.

Graves, W., Krafft, G. and Delayen, J. (2009). Accelerator Design of the MIT Compact X-Ray Source Project Proceedings of 2009 Particle Acellerator.

Delayen, J. and Wang, H. (2008). a Ne TEM-type Deflecting and Crabbing RF Structure Proc. 2008 Linear Accelerator Conference.

De Silva, S. U. and Delayen, J. (2008). Analysis of Electronic Damping of Microphonics in Superconducting Cavities Proc. 2008 Linear Accelerator Conference.

Litvinenko, V. N., Beavis, D., Ben-Zvi, I., Blaskiewicz, M., Burrill, A., Calaga, R., Cameron, P., Chang, X., Drees, A., Ganetis, G., Gassner, D. Mark., hahn, H., Hammons, L. Reginald., Hershcovitch, A., Hseuh, H., Jain, A. Kumar., Kayran, D., Kewish, J., Lambiase, R., Lederle, D. L., Mahler, G., McIntyre, G., Meng, W., Nehring, T., Oerter, B., Pai, C., Pate, D., Phillips, D., Pozdeyev, E., Rao, T., Reich, J., Roser, T., Russo, T., Smith, K., Tuozzolo, J., Weiss, D., Williams, N., Yip, K., Zaltsman, A., Bluem, H., Cole, M., Favale, A., Holmes, D., Rathke, J., Schultheiss, T., Delayen, J., Funk, L. Warren., Phillips, L. and Preble, J. P. (2008). R&D Energy Recovery Linac at Brookhaven National Laboratory (pp. Reich) Proc. EPAC 2008.

Delayen, J., Allison, T. and Hovater, C. (2007). Development of a Digital Self-Excited Loop for Field Control in High-Q Superconducting Cavities Proc. 2007 RF Superconductivity Workshop.

Conway, Z. A. and Delayen, J. (2007). Electro-Mechanical Properties of Spoke-Loaded Superconducting Cavities Proc. 2007 RF Superconductivity Worshop.

Conway, Z. A. and Delayen, J. (2007). Low-Level RF Control of Superconducting Microphonics in Spoke-Loaded Cavities Proc. 2007 RF Superconductivity Workshop.

Hovater, C. and Delayen, J. (2007). A Digital Self Excited Loop for Accelerating Cavity Field control Proc. 2007 Particle Acceleator Conference.

Zhang, Y. and Delayen, J. (2007). Design of High Kuminosity Ring-Ring Electron-Light Ion Collider at CEbAF Proc. 2007 Particle Accelerator Conference.

Bogacz, A., Zhang, Y., Bruell, A., Delayen, J., Derbenev, Y., Ent, R., Grames, J., Hutton, A., Krafft, G., Li, R., Merminga, N., Yunn, B., Poelker, B., Wojtsekhowski, B. and Montag, C. (2007). Design Studies of High-Luminosity Ring-Ring Electron-Ion Collider at CEBAF (pp. 1935) Proc. Particle Accelerator Conference 2007.

Litvinenko, V. N. and Delayen, J. (2007). Status of R&D Energy Recovery Linac at Brookhaven National Laboratory Proc. 2007 Particle accelerator Conference.

Wu, J. and Delayen, J. (2007). Transverse Effect due to Short-range Resistive Wall Wakefield Proc. 2007 Particle Conference.

Delayen, J. and Wu, J. (2007). Transverse Effects due to Random Displacement of Resistive Wall Segments and Focusing Elements Proc. 2007 Particle Accelerator Conference.

Ben-Zvi, I. and Delayen, J. (2007). Extremly High-current, High-brightness Energy Recover Linacs proc. 2005 Particle accelerator Conference.

Kayran, D. and Delayen, J. (2006). Status of High current R&D Energy Recovery Linac at Brookhaven National Laboratory Proc. RuPaC 2006.

Derbenev, Y., Bogacz, A., Delayen, J., Grames, J., Hutton, A., Krafft, G., Li, R., Merminga, N., Poelker, B., Yunn, B., Zhang, Y. and Montag, C. (2005). ELIC at CEBAF (pp. 1482) Proc. Particle Accelerator Conference 2005.

Phillips, L. and Delayen, J. (2005). A Sapphire Loaded TE011 Cavity for Surface Impedance Measurements - Design, Construction, and Commissioning Status Proc. 2005 RF Superconductivity Workshop.

Holmes, D. and Delayen, J. (2005). Design and Fabrication of the RHIC Electron-cooling Experiment High Beta Cavity and Cryomodule Proc. 2005 Rf Superconductivity W orkshop.

Delayen, J. (2005). Ponderomotive Instabilities and Microphonics Proc. 2005 RF Superconductivity Worshop.

Ben-Zvi, I. and Delayen, J. (2005). Electron Cooling of RHIC Proc. 2005 Particle Accelerator Conference.

Litvinenko, V. N. and Delayen, J. (2005). High Current Energy Recovery Linac at BNL Proc. 2005 Particle Accelerator Conference.

Drury, H. A., Daly, E., Davis, K., Delayen, J., Grenoble, C., Hicks, R., King, L., Plawski, T., Powers, T., Preble, J. P., Wang, H. and Wiseman, M. (2005). Overview of SNS Cryomodule Performance Proc. 2005 Particle Accelerator Conference.

Ozelis, J. P., Delayen, J. and Mammosser, J. (2005). Overview of the Production Superconducting Cavities for the Spallation Neutron Source Linac Proc. 2005 Particle accelerator Conference.

Hofler, A. and Delayen, J. (2005). Simulation Study of Electronic Damping of Microphonic Vibration in Superconducting Cavities Proc. 2005 Particle Accelerator conference.

Delayen, J. (2005). Superconducting Cavities for Proton and Ion Linacs Proc. High Power Superconducting Ion, Proton, and Multi-Species Linacs Workshop.

Presentations

De Silva, S. U.. and Delayen, J. (September 4, 2013). Mechanical Analysis of the 400 MHz RF Dipole Crabbing Cavity Prototype for the LHC High Luminosity Upgrade Demonstration Pasadena, CA.

Castilla, A. and Delayen, J. (September 4, 2013). Tests of an RF Dipole Crabbing Cavity for an Electron-Ion Collider Demonstration Pasadena, CA.

De Silva, S. U.. (September 9, 2012). Compact Superconducting Crabbing nd Deflecting Cavities Demonstration Invited Tel Aviv, Israel.

Delayen, J. (September 9, 2012). Superconducting Spoke Cavities for Electron and High-Velocity Proton Linacs Demonstration Invited Tel Aviv, Israel.

Hopper, C. S.. and Delayen, J. (September 9, 2012). Multipacting Analysis of High-Velocity Superconducting Spoke Resonators Tel Aviv, Israel.

Olave, R., Delayen, J. and Hopper, C. S.. (September 9, 2012). Multipole Expansion of the Fields in Superconducting High-Velocity Spoke Cavities Tel Aviv, Israel.

De Silva, S. U.. and Delayen, J. (September 9, 2012). Multipole Field Effects for the Superconducting Parallel-Bar Deflecting/Crabbing Cavities Tel Aviv, Israel.

Delayen, J. (September 9, 2012). Superconducting Spoke Cavities for Electron and High-Velocity Proton Linacs Tel Aviv, Israel.

Delayen, J. (September 9, 2012). Superconducting Spoke Cavities for Electron and High-Velocity Proton Linacs Tel Aviv, Israel.

Park, H., De Silva, S. U.. and Delayen, J. (May 21, 2012). Characteristics and Fabrication of a 499 MHz Superconducting Cavity for the Jefferson Lab 12 GeV Upgrade New Orleans, LA.

De Silva, S. U.. and Delayen, J. (May 21, 2012). Design and Development of Superconducting Parallel-bar Deflecting/Crabbing Cavities New Orleans, LA.

Castilla, A., Krafft, G. and Delayen, J. (May 21, 2012). Design of Electron and Ion Cavities for an Ion Collider New Orleans, LA.

Gorelov, D., Boulware, C. H.., Grimm, T., De Silva, S. U.. and Delayen, J. (May 21, 2012). Development of a Superconducting 500 MHz Multi-Spoke Cavity for Electron Linacs New Orleans, LA.

Hopper, C. S.., Olave, R. and Delayen, J. (May 21, 2012). Development of Superconducting Spoke Cavities for High-velocity Applications New Orleans, LA.

Gorelov, D., De Silva, S. U.. and Delayen, J. (May 21, 2012). Engineering of a Superconducting 400 MHz Crab Cavity for the LHC HiLumi Upgrade New Orleans, LA.

Gorelov, D., De Silva, S. U.. and Delayen, J. (May 21, 2012). Engineering of a Superconducting 400 MHz Crab Cavity for the LHC HiLumi Upgrade New Orleans, LA.

Ahmed, S., Krafft, G., Mammosser, J. D.., Spata, M., Wissman, M. J.. and Delayen, J. (May 21, 2012). High-power test of RF Separator for 12 GeV Upgrade of CEBAF at Jefferson Lab New Orleans, LA.

Li, Z., Ge, L., Delayen, J. and De Silva, S. U.. (May 21, 2012). RF Modeling Using Parallel Codes ACE3P for the 400 MHz Parllel-Bar/Ridged Waveguide Compact Crab Cavity for the LHC HiLumi Upgrade New Orleans, LA.

Delayen, J. (November , 2011). Parallel-bar Prototyping Status Invited Talk Geneva, Switzerland.

Delayen, J. (November , 2011). Parallel-bar/Ridge Waveguide Design Status Invited Talk Geneva, Switzerland.

Ahmed, S., Derbenev, Y. S.., Krafft, G., Morosov, V., Yunn, B. C.., Zhang, Y., Castilla, A. and Delayen, J. (September , 2011). Crab Crossing Schemes and Studies for Electron Ion Collider San Sebastian, Spain.

Delayen, J., Hopper, C. S.. and Olave, R. (September , 2011). Design Of Low-frequency Superconducting Cavities for High-velocity Applications San Sebastian, Spain.

Delayen, J. and DeSilva, S. U.. (September , 2011). Design of Superconducting Parallel-bar Deflecting/Crabbing Cavities San Sebastian, Spain.

Zhang, Y., Ahmed, S., Bogacz, A., Derbenev, Y. S.., Hutton, A., Krafft, G., Li, R., Morozov, V., Satogata, T., Spata, M., Terzic, B., Yunn, B. C.., Erdelyi, B., Manikonda, S. L.., Ostroumov, P., Kondratenko, A., Kim, Y., Dudnikov, V., Johnson, R. P.., Abryratne, S., Desilva, S. U.. and Delayen, J. (September , 2011). Design Status of MEIC San Sebastian, Spain.

Delayen, J. (August , 2011). SRF Technology for Particle Accelerators: Progress Report Invited Talk Brown University.

Delayen, J. (July , 2011). Compact Superconducting Cavities for Deflecting and Crabbing Applications Invited Chicago, IL.

Delayen, J. and DeSilva, S. U.. (July , 2011). Designs of Superconducting Parallel-bar Cavities for Deflecting/Crabbing Applications Proc. 2011 SRF Conference Chicago, IL.

Hopper, C. S.., Delayen, J. and Olave, R. (July , 2011). Higher-order Mode Properties of Superconducting Two-spoke Cavities Proc. 2011 SRF Conference Chicago, IL.

Park, H. K.., DeSilva, S. U.. and Delayen, J. (July , 2011). Mechanical Study of Superconducting Parallel-bar Deflecting/ Crabbing Cavities Proc. 2011 SRF Conference Chicago, IL.

DeSilva, S. U.. and Delayen, J. (July , 2011). Analysis of HOM Properties of Superconducting Parallel-bar Deflecting/Crabbing Cavities Proc. 2011 SRF Conference, Chicago, IL.

Delayen, J. (May , 2011). ¹ÏÉñÍø/JLab Parallel-bar Cavity Development Invited Montauk, NY.

Delayen, J. (May , 2011). Parallel-bar Cavity Development LARP CM 16 Invited Talk Montauk, NY.

Ahmed, S., Delayen, J., Hofler, A. S.., Krafft, G., Spata, M., Tiefenback, G., Beard, K. B.., Deitrick, K. A.. and De Silva, S. U.. (March , 2011). Beam Dynamics Studies of Parallel-bar Deflecting Cavities Proc. 2011 Particle Accelerator Conference New York, NY.

Ahmed, S., Derbenev, Y. S.., Krafft, G., Zhang, Y., Castilla, A., Delayen, J. and De Silva, S. U.. (March , 2011). Crab Crossing Considerations for MEIC 2 Proc. 2011 Particle Accelerator Conference New York, NY.

Delayen, J. and De Silva, S. U.. (March , 2011). Design of Superconducting Parallel-bar Deflecting/Crabbing Cavities with Improved Properties Proc. 2011 Particle Accelerator Conference New York, NY.

Delayen, J., De Silva, S. U.. and Hopper, C. S.. (March , 2011). Design of Superconducting Spoke Cavities for High-velocity Applications Proc. 2011 Particle Accelerator Conference New York, NY.

De Silva, S. U.. and Delayen, J. (March , 2011). Fundamental and HOM Coupler Design for the Superconducting Parallel-bar Cavity Proc. 2011 Particle Accelerator Conference New York, NY.

De Silva, S. U.. and Delayen, J. (March , 2011). Multipacting Analysis of the Superconducting Parallel-bar Cavity Proc. 2011 Particle Accelerator Conference New York, NY.

Delayen, J. (November , 2010). Superconducting RF (series of lectures) Invited Talk Villars-sur-Olon, Switzerland.

Delayen, J. (October , 2010). New Materials and Characterization for SRF Accelerator Applications Invited Talk Bethesda.

Delayen, J. (September , 2010). Applications of Spoke Cavities Invited Talk Tsukuba, Japan.

Delayen, J. (September , 2010). Superconducting Cavities and Accelerators Invited Talk Bodrum, Turkey.

de Silva, S. U.. and Delayen, J. (September , 2010). TEM-type Cavities Invited Talk United Kingdom.

Delayen, J. (July , 2010). RF Superconductivity: Physics, Technology and Applications Invited Talk United Kingdom.

Delayen, J. (June , 2010). The ¹ÏÉñÍø Center for Accelerator Science Institute for High Energy Physics Chinese Academy of ScienceBeijing, China.

Delayen, J. (June , 2010). RF Superconductivity: Physics, Technology and Applications Invited Talk US Particle Accelerator School MIT.

Delayen, J. (June 1, 2010). The ¹ÏÉñÍø Center for Accelerator Science Institute for Heavy-ion Physics Piking University, Beijing, China.

De Silva, S. U. and Delayen, J. (May , 2010). Higher Order Mode Properties of Superconducting Parallel-Bar Cavities IPAC 2010 Kyolo, Japan.

Delayen, J. (April , 2010). TEM-type Deflecting/Crabbing Cavities ICFA Bean Dynamics Mini-Workshop Febmilab.

Delayen, J. (March 16, 2010). RF Superconductivity - An Essential Technology for 4th Generation Light Sources March 2010 Meeting of the American Physical Society Portland, OR.

Delayen, J. (December 5, 2009). Jefferson Lab Overview Turkeish Accelerator Center Ankara, Turkey.

Delayen, J. (November 4, 2009). Parallel-Bar Deflecting and Crabbing Cavities LARP CM 13 Port Jefferson, NY.

Delayen, J. (October 9, 2009). Superconducting Low Beta Structures - Jlab Experience 4th Meeting ESS-S Linac Reference Group Aarhus, Denmark.

De Silva, S. U. and Delayen, J. (September 20, 2009). Design Optimization of Superconducting Parallel-bar Cavities SRF Conference Berlin, Germanyi.

Delayen, J. (September 16, 2009). Parallel-bar Deflecting and Crabbing Cavities LHC-CC 09 CERN, Geneva, Switzerland.

Delayen, J. (July 20, 2009). RF Superconductivity as Applied to Particle accelerators Universidad del Pais Vasco Bilbao, spain.

Graves, W., Krafft, G. and Delayen, J. (May , 2009). Accelerator Design of the MIT Compact X-Ray Source Project 2009 Particle Accelerator Conference Vancouver, BC, Canada.

Graves, W. and Delayen, J. (May , 2009). Accelerator Design of the MIT Compact X-Ray Source Project 2009 Particle Accelerator Conference Vancouver, BC, Canada.

Wang, W. and Delayen, J. (May , 2009). Design of Superconducting Parallel Bar Deflecting and crabbing RF Structures 2009 Particle Accelerator Conference Vancouver, BC, Canada.

Hall, B. and Delayen, J. (May , 2009). Novel Geometries for the LHC Crab Cavities 2009 Particle Accelerator Conference Vancouver, BC, Canada.

Delayen, J. and Spata, M. (May , 2009). Options for an 11 GeV RF Beam Separator for the Jefferson Lab CEBAF Upgrade 2009 Particle Accelerator Conference Vancouver, BC, Canada.

Delayen, J. (March 17, 2009). Accelerator Science? Why? Old Dominion University, Norfolk, VA.

Delayen, J. and Wang, H. (October , 2008). A New TEM-type Deflecting and Crabbing Rf Structure 2008 Linear Accelerator Conference Victoria, BC, Canada.

De Silva, S. U. and Delayen, J. (October , 2008). Analysis of Electronic Damping of Microphonics in Superconducting Cavities 2008 Linear Accelerator Conference Victoria, BC, Canada.

Litvinenko, V. N. and Delayen, J. (June , 2008). R & D Energy Recovery Linac at Brookhaven National Laboratory EPAC 2008 Genoa, Italy.

Delayen, J. (March 27, 2008). Limitations of the SrF Technology Soreq Appliled Research Accelerator Facility, Yavne, Israel.

Delayen, J. (March 27, 2008). Low and Medium-B Superconducting Cavities and Accelerators Soreq Applied Research accelerator Facility, Yavne, Isreal.

Delayen, J. (March 26, 2008). RF Control of Microphonic and Ponderomotive Instabilities in Sukperconducting Cavities Soreq applied Research Accelerator Facility, Yavne, Israel.

Delayen, J. (January 24, 2008). Low and Medium B Superconducting Cavities and accelerators Bhabha Atomic research Centre, Mumbai, India.

Delayen, J. (January 7, 2008). Supercondukcting Davities and Cryomodules Joint accelerator School, Raja Ramanna Centre for Advanced Technology, Indore, India.

Delayen, J. and Allison, T. (October , 2007). Development of a Digital Self-Excited Loop for Field Control in High-Q Superconducting Cavities 2007 RF Superconductivity Workshop Beijing, China.

Conway, Z. A. and Delayen, J. (October , 2007). Electro-Mechanical Properties of Spoke-Loaded Superconducting Cavities 2007 RF Superconductivity Workshop Beijing, China.

Conway, Z. A. and Delayen, J. (October , 2007). Low-Level RF Control of Superconducting Microophonics in Spoke-Loaded Cavities 2007 RF Superconductivityi Workshop Beijing, China.

Delayen, J. (October 18, 2007). Low and Medium-B Superconducting Cavities and Accelerators Peking University, Beijing, China.

Delayen, J. (October 18, 2007). Low Level rF Control and tuning Systems Peking University, Beijing, China.

Hovater, C. and Delayen, J. (June , 2007). A Digital Self Excited Loop for Accelerating Cavity Field C ontrol 2007 Particle Accelerator Conference Albuquerque, NM.

Zhang, Y. and Delayen, J. (June , 2007). Design of High Luminosity Ring-Ring Electron-Light Ion Collider at CEBAF 2007 Particle accelerator Conference Albuquerque, NM.

Litvinenko, V. N. and Delayen, J. (June , 2007). Status of R&D Energy Recovery Linac at Brookhaven National Laboratory particle Accelerator Conference Albuquerque, NM.

Bogacz, A., Zhang, Y., Bruell, A., Delayen, J., Derbenev, Y., Ent, R., Grames, J., Hutton, A., Krafft, G., Li, R., Merminga, N., Poelker, P., Wojtsekhowski, B., Yunn, B. and Montag, C. (June , 2007). Design Studies of High-Luminosity Ring-Ring Electron-Ion Collider at CEBAF Particle Accelerator Conference 2007 Albuquerque, NM .

Delayen, J. and Wu, J. (June , 2007). Transverse Effects due to Random Displacement of Resistive Wall Segments and Focusing Elements Proc. 2007 Particle accelerator Conference Albuquerque, NM.

Wu, J. and Delayen, J. (June , 2007). Transverse Effect due to Short-range Resistive Wall Wakefield Proc. 2007 Particle Conference Albuquerque, NM.

Ben-Zvi, I. and Delayen, J. (May , 2007). Extremly High-current, High-brightness Energy Recover Linacs Proc. 2005 Particle Accelerator Conference Knoxville, TN.

Delayen, J. (May 30, 2007). Superconducting RF Cockcroft Institute, Daresbury Laboratory, United Kingdom.

Delayen, J. (February 8, 2007). Superfluid Helium and the Bose-Einstein Condensation Inter-University Accelerator Center.

Delayen, J. (February 5, 2007). The Physics and Technology of RF Superconductivity Inter-University Accelerator Center, New Delhi, India.

Delayen, J. (February 2, 2007). Advances in ERLs and Microwave Superconductivity for Lepton Accelerators, Colliders, and Light Sources Asian Particle Accelerator Conference Indore, India.

Delayen, J. (December 7, 2006). A General Formalilsm of Cumulative Beam Breakkup in Linear Accelerators Los Alamos National Laboratory,.

Delayen, J. (December 7, 2006). The Spoke Cavity: Genesis and Properties Los Alamos National Laobratory.

Kayran, D. and Delayen, J. (September , 2006). Status of High current R&D Energy Recovery Linac at Brookhaven National Laboratory Proc. RuPaC 2006 Novosibirsk, Russia.

Delayen, J. (September 12, 2006). Two toics i accelerator Sciencs: 1-A General Model of Cumulative Beam Breakup in Linear Accelerators, 2- The Critical Field of Superconductors as Fundamental Limitations in superconducting Accelerating Structures ¹ÏÉñÍø, Norfolk, VA.

Delayen, J. (April 26, 2006). SRF for Accelerators- Applications University of Virginia, Charlottesville.

Delayen, J. (April 24, 2006). SRF for Accelerators- Basics Universityi of Virginia, Charlottesville.

Delayen, J. (March 7, 2006). Ponderomotive Instabilities and Microphonics National Synchrotron radiation Research Center, Hsinchu, Taiwan.

Delayen, J. (February 10, 2006). Superfluid Helium and the Bose-Einstein Condensation National Synchrotron radiation Research Center, Hsinchu, Taiwan.

Delayen, J. (October 27, 2005). Superfluid Helium and the Bose-Einstein Condensation Special Colloquium in Honor of the World Year of Physics: Jefferson Lab.

Phillips, L. and Delayen, J. (July , 2005). A Sapphire Loaded TE011 Cavity for Surface Impedance Measurements - Design, Construction, and Commissioning Status Proc. 2005 RF Superconductivity Workshop Ithaca, Ny.

Holmes, D. and Delayen, J. (July , 2005). Design and Barication of the RHIC Electron-cooling Experiment High Beta Cavity and Cryonodule proc. 2005 RF Superconductivity Workshop Ithaca, NY.

Delayen, J. (July , 2005). Ponderomotive Instabilities and Microphonics Proc. 2005 RF Superconductivity Workshop Ithaca, Ny.

Delayen, J. (July 10, 2005). Ponderomotive Instabilities and Microphonics 2005 RF Superconductivity Workshop Ithaca, NY.

Derbenev, Y., Bogacz, A., Delayen, J., Grames, J., Hutton, A., Krafft, G., Li, R., Merminga, N., Poelker, B., Yunn, B., Zhang, B. and Montag, C. (May , 2005). ELIC at CEBAF Particle Accelerator Conference 2005 Oak Ridge, TN.

Ben-Zvi, I. and Delayen, J. (May , 2005). Electron Cooling of RHIC Proc. 2005 Particle Accelerator Conference Knoxville, TN.

Litvinenko, V. N. and Delayen, J. (May , 2005). High Current Energy Recovery Linac at BNL Proc. 2005 Particle Accelerator Conference Knoxville, Tn.

Drury, J. P. and Delayen, J. (May , 2005). Overview of SNS Cryomodule Performance Proc. 2005 Particle Accelerator Conference Knoxville, Tn.

Delayen, J. (May , 2005). Overview of the Production Superconducting Cavities for the Spallation Neutron Source Linac Proc. 2005 Particle Accelerator Conference Knoxville, TN.

Ostroumov, P. and Delayen, J. (May , 2005). Review of a Spoke-cavity Design Option for the RIA Driver Linac Proc. 2005 Particle Accelerator Conference Knoxville, TN.

Hofler, A. and Delayen, J. (May , 2005). Simulation Study of Electronic Damping of Microphonic Bivration in Superconducting Cavities Proc. 2005 Particle accelerator Conference Knoxville, TN.

Delayen, J. (May , 2005). Superconducting Cavities for Proton and Ion Linacs Proc. High Power Superconducting Ion, Proton, and Multi-Species Linacs Workshop Naperville, IL.

Delayen, J. (May 22, 2005). Superconducting Cavities for Proton and Ion Linacs High Power Superconducting Ion, and Multi-Species Linacs Workshop Naperville, IL.

• Director's Award for Exceptional Achievement, , Argonne National Laboratory
• Fellow of the American Physical Society,
• Patent: Digital Self Excited Loop,
• Patent: Particle Beam Crabbing and Deflecting Cavity,
• Patent: RFQ Device for Accelerating Particles,
• Prize for Excellence in Theoretical Subjects, ENSAM, Paris
• 2012: Nominated for Virginia Scientist of the year,
• 2011: Distinguished Research Award, College of Science, ¹ÏÉñÍø
• 2011: Nominated for Virginia Scientist of the year ,
• 2011: USPAS Prize for Achievement in Accelerator Physics and Technology ,