• J.A. Crittenden, I.V. Bazarov, S.A. Belomestnykh, D.H. Bilderback, M.G. Billing, J.D. Brock, E.P. Chojnacki, B.M. Dunham, M. P. Ehrlichman, M.J. Forster, S.M. Gruner, G.H. Hoffstaetter, Y. Li, M. Liepe, C.E. Mayes, A.A. Mikhailichenko, H. Padamsee, S.B. Peck, D. Sagan, V.D. Shemelin, A.B. Temnykh, M. Tigner, V. Veshcherevich
  CLASSE, Ithaca, New York
• C. Johnstone
  Fermilab, Batavia

Cornell University is planning to build an Energy-Recovery Linac (ERL) X-ray facility. In this ERL design, a 5 GeV superconducting linear accelerator extends the CESR ring which is currently used for the Cornell High Energy Synchrotron Source (CHESS). Here we describe some of the recent developments for this ERL, including linear and nonlinear optics, tracking studies, vacuum system design, gas and intra beam scattering computations, and collimator and radiation shielding calculations based on this optics, undulator developments, optimization of X-ray beams by electron beam manipulation, technical design of ERL cavities and cryomodules, and preparation of the accelerator site.

Slides

• I.V. Bazarov, S.A. Belomestnykh, E.P. Chojnacki, J. Dobbins, B.M. Dunham, R.D. Ehrlich, M.J. Forster, C.M. Gulliford, G.H. Hoffstaetter, Y. Li, M. Liepe, X. Liu, F. Löhl, D.G. Ouzounov, H. Padamsee, D.H. Rice, V.D. Shemelin, E.N. Smith, K.W. Smolenski, M. Tigner, V. Veshcherevich
  CLASSE, Ithaca, New York
• H. Li
  Cornell University, Ithaca, New York
• H. K. Sayed
  JLAB, Newport News, Virginia

Cornell University has built a high average current electron injector for use with an Energy Recovery Linac. The injector is capable of up to 100 mA average current at 5 MeV (33 mA at 15 MeV) and is expected to produce the ultra low emittances needed for an ERL. This talk will give an overview of the initial performance of this injector and summarize a spectrum of beam physics experiments undertaken to demonstrate low emittance, high average current operation.

Slides

• C.M. Gulliford, I.V. Bazarov, M.J. Forster, A.K. Kim
  CLASSE, Ithaca, New York

Commissioning of a new high brightness electron source for the Energy Recovery Linac at Cornell University is currently underway. Despite the fact that the beam dynamics in this portion of the accelerator is space-charge dominated, a fundamental understanding of the machine linear optics is crucial in that it determines the effectiveness of space-charge emittance compensation methods, as well as provides the means to achieving various beam parameters such as beam length and energy spread. Here we introduce a new numerical tool being used in the commissioning of the injector that provides linear optics matrix calculation using field maps for various optical elements.