Publications

The Main Linac Cavity for Cornell's Energy Recovery Linac: Cavity design through horizontal cryomodule prototype test, N. Valles et. al. Nuclear Instruments and Methods in Physics Research Section A (July, 2013).

Temperature dependence of the superheating field in niobium, N.R.A.Valles, M.U.Liepe, arXiv:1002.3182v1 [cond-mat.supr-con], (2010).

Invited Talks

1. High Q Cavity Operation in the Cornell Horizontal Test Cryomodule N. Valles, et. al., Telsa Technology Collaboration: Topical Meeting on CW-SRF. Cornell University (2013)
2. Cornell ERL Main Linac Cavity RF Design N. Valles, M. Liepe, V. Shemelin, Telsa Technology Collaboration: Topical Meeting on CW-SRF. Cornell University (2013)
3. Temperature Waves in SRF Research N. Valles, Andrei Ganshin, D. Hartill, G. Hoffstaetter, X. Mi and E. Smith, IPAC 2013, Shanghai, People's Republic of China (2013).
4. Design, fabrication, and high Q0 testing of the main linac cavity for the Cornell ERL N. Valles, TESLA Technology Collaboration, Thomas Jefferson National Accelerator Laboratory (2012).
5. High Q cavities at Cornell N. Valles, 7th SRF Materials Workshop, Thomas Jefferson National Accelerator Laboratory (2012).
6. HOM Damping in the ERL Main Linac: Cavity Design through 1st Horizontal Test N. Valles, HOMSC12. Daresbury, UK (2012)
7. RF Simulation Codes used at Cornell University N. Valles, HOMSC12. Daresbury, UK (2012)
8. Cornell ERL Main Linac HOM Load Research and Development N. Valles, HOMSC12. Daresbury, UK (2012)
9. Cornell ERL's Main Linac Cavities. N. Valles, The 50th ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs. KEK, Tsukuba, Japan (2011)
10. The Superheating Field of Niobium: Theory and Experiment N. Valles, 15th International Conference on RF Superconductivity. Chicago, IL (2011).
11. Absorbing Materials for Beamline Absorbers: How Good is Good Enough? N. Valles, 2010 Higher-Order Mode Workshop. Cornell University, Ithaca, NY (2010).

Our Work in the News

October 24, 2011 - Report of breakthrough prototype 7-cell cavity development in the Cornell Chronicle.

April 5, 2011 - An article discussing our work using parallel computing in the design of 7-cell cavities for Cornell's ERL was featured on HPC wire.

Conference Proceedings

1. HOM Studies of the Cornell ERL Main Linac Cavity: HTC-1 Through HTC-3 N. Valles, R. Eichhorn, G. Hoffstaetter, M. Liepe, Fourth International Particle Accelerator Conference. Shanghai, People's Republic of China (2013)
2. Cornell ERL Main Linac 7-cell Cavity Performance in Horizontal Test Cryomodule Qualifications N. Valles, R. Eichhorn, F. Furuta, M. Ge, D. Gonnella, Y. He, K. Ho, G. Hoffstaetter, M. Liepe, T. O'Connell, S. Posen, P. Quigley, J. Sears, V. Veshcherevich, Fourth International Particle Accelerator Conference. Shanghai, People's Republic of China (2013)
3. Readiness for the Cornell ERL G. Hoffstaetter, A. Bartnik, I. Bazarov, D. Bilderback, M. Billing, J. Brock, J. Crittenden, L. Cultrera, D. Dale, J. Dobbins, B. Dunham, R. Ehrlich, M. Ehrlichman, R. Eichhorn, K. Finkelstein, E. Fontes, M. Forster, S. Full, F. Furuta, D. Gonnella, S. Gray, S. Gruner, C. Gulliford, D. Hartill, Y. He, R. Helmke, K. Ho, R. Kaplan, S. Karkare, V. Kostroun, H. Lee, Y. Li, M. Liepe, X. Liu, J. Maxson, C. Mayes, A. Mikhailichenko, H. Padamsee, J. Patterson, S. Peck, S. Posen, P. Quigley, P. Revesz, D. Rice, D. Sagan, J. Sears, V. Shemelin, D. Smilgies, E. Smith, K. Smolenski, A. Temnykh, M. Tigner, N. Valles, V. Veshcherevich, A. Woll, Y. Xie, Z. Zhao, Fourth International Particle Accelerator Conference. Shanghai, People's Republic of China (2013)
4. Cornell's HOM Beamline Absorbers R. Eichhorn, G. Hoffstaetter, M. Liepe, P. Quigley, J. Sears, V. D. Shemelin, E. Smith, N. Valles, Fourth International Particle Accelerator Conference. Shanghai, People's Republic of China (2013)
5. Beam Position Monitor within the Cornell Energy Recovery Linac Cavity Assembly M. Billing, M. Liepe, V. Shemelin, N. Valles, Fourth International Particle Accelerator Conference. Shanghai, People's Republic of China (2013)
6. Progress on Superconducting RF Work for the Cornell ERL. M. Liepe, F. Furuta, G.M. Ge, Y. He, G.H. Hoffstaetter, T.I. O'Connell, S. Posen, J. Sears, M. Tigner, N. Valles, V. Veshcherevich, Third International Particle Accelerator Conference. New Orleans, LA (2012)
7. HOM Studies on the Cornell ERL Prototype Cavity in a Horizontal Test Cryomodule.N.R.A. Valles, M.G. Billing, G.H. Hoffstaetter, M. Liepe, C.E. Mayes, Third International Particle Accelerator Conference. New Orleans, LA (2012)
8. Testing of the Main-Linac Prototype Cavity in a Horizontal Test Cryomodule for the Cornell ERL. N. Valles, F. Furuta, M. Ge, Y. He, K.M.V. Ho, G. H. Hoffstaetter, M. Liepe, T. O'Connell, S. Posen, P. Quigley, J. Sears, M. Tigner, V. Veshcherevich, Third International Particle Accelerator Conference. New Orleans, LA (2012)
9. Temperature Dependence of the Superheating Field: DC and RF Critical Fields.N. Valles, G. Hoffstaetter, M. Liepe. Third International Particle Accelerator Conference. New Orleans, LA (2012)
10. Automated Cavity Test Suite for Cornell's ERL Program.D. Gonnella, M. Liepe, N. Valles. Third International Particle Accelerator Conference. New Orleans, LA (2012)
11. Suppression of Coupler Kicks in 7-Cell Main Linac Cavities for Cornell's ERL. N. Valles, M. Liepe and V.D. Shemelin, The Second International Particle Accelerator Conference. San Sebastian, Spain (2011).
12. Effects of Elliptically Deformed Cell Shape in the Cornell ERL Cavity L. Xiao, K. Ko, K. Lee, M. Liepe and N. Valles, 15th International Conference on RF Superconductivity. Chicago, IL (2011).
13. Quench Studies in Large and Fine Grain Nb Cavities. S. Posen, M. Liepe and N. Valles, 15th International Conference on RF Superconductivity. Chicago, IL (2011).
14. Beam Break-Up Studies for Cornell's Energy Recovery Linac N. Valles, D. S. Klein and M. Liepe, 15th International Conference on RF Superconductivity. Chicago, IL (2011).
15. Coupler Kick Studies in Cornell's 7-Cell Superconducting Cavities. N. Valles, M. Liepe and V. D. Shemelin, 15th International Conference on RF Superconductivity. Chicago, IL (2011).
16. Superconducting RF for the Cornell Energy-Recovery Linac Main Linac M. Liepe, Y. He, G.H. Hoffstaetter, S. Posen, J. Sears, V.D. Shemelin, M. Tigner, N. Valles, V. Veshcherevich, 15th International Conference on RF Superconductivity. Chicago, IL (2011).
17. Cornell ERL Research and Development C.E. Mayes, I.V. Bazarov, S.A. Belomestnykh, D.H. Bilderback, M.G. Billing, J.D. Brock, E.P. Chojnacki, J.A. Crittenden, L. Cultrera, J. Dobbins, B.M. Dunham, R.D. Ehrlich, M. P. Ehrlichman, E. Fontes, C.M. Gulliford, D.L. Hartill, G.H. Hoffstaetter, V.O. Kostroun, F.A. Laham, Y. Li, M. Liepe, X. Liu, F. Loehl, A. Meseck, A.A. Mikhailichenko, H. Padamsee, S. Posen, P. Quigley, P. Revesz, D.H. Rice, D. Sagan, V.D. Shemelin, E.N. Smith, K.W. Smolenski, A.B. Temnykh, M. Tigner, N. Valles, V. Veshcherevich, Y. Xie, S.S. Karkare, J.M. Maxson, Proceedings of the 2011 Particle Accelerator Conference, New York, New York (2011).
18. Progress on Superconducting RF for the Cornell Energy-Recovery-Linac M. Liepe, G. Hoffstaetter, S. Posen, J. Sears, V. Shemelin, M. Tigner, N. Valles, V. Veshcherevich, Proceedings of the 2011 Particle Accelerator Conference, New York, New York (2011).
19. Designing Multiple Cavity Classes for the Main Linac of Cornell's ERL N. Valles and M. Liepe, Proceedings of the 2011 Particle Accelerator Conference, New York, New York (2011).
20. Coupled Electromagnetic-Thermal-Mechanical Simulations of Superconducting RF Cavities, S. Posen, M. Liepe, N. Valles, Proceedings of the 2010 International Particle Accelerator Conference, Kyoto, Japan (2010).
21. Cavity Design for Cornell's Energy Recovery Linac, N. Valles, M. Liepe, Proceedings of the 2010 International Particle Accelerator Conference, Kyoto, Japan (2010).
22. Baseline Cavity Design for Cornell's Energy Recovery Linac, N. Valles, M. Liepe, Proceedings of the 2010 25th International Linear Accelerator Conference, Tsukuba, Japan (2010).
23. Exploring the Maximum Superheating Magnetic Fields of Niobium , N. Valles, Z. Conway, M. Liepe, Proceedings of the 2009 International Workshop of RF Superconductivity, Berlin, Germany (2009).
24. Seven-Cell Cavity Optimization for Cornell's Energy Recovery Linac , N. Valles and M. Liepe, Proceedings of the 2009 International Workshop of RF Superconductivity, Berlin, Germany (2009).
25. Robustness of the Superconducting Multicell Cavity Design for the Cornell Energy Recovery Linac , M. Liepe, G.Q. Stedman, N. Valles, Proceedings of the 2009 Particle Accelerator Conference, Vancouver, Canada, (2009).
26. Exploring the Maximum Superheating Magnetic Fields of Niobium , N. Valles, Z. Conway, M. Liepe, Proceedings of the 2009 Particle Accelerator Conference, Vancouver, Canada, (2009).

Student Presentations

Using Omega3P on Cornell Systems [PPTX file, 3.37 MB]