• F. Zimmermann, S. Bettoni, O.S. Brüning, B.J. Holzer, S. Russenschuck, D. Schulte, R. Tomás
  CERN, Geneva
• H. Aksakal
  N.U, Nigde
• R. Appleby
  UMAN, Manchester
• S. Chattopadhyay, M. Korostelev
  Cockcroft Institute, Warrington, Cheshire
• A.K. Çiftçi, R. Çiftçi, K. Zengin
  Ankara University, Faculty of Sciences, Tandogan/Ankara
• J.B. Dainton, M. Klein
  The University of Liverpool, Liverpool
• E. Eroglu, I. Tapan
  UU, Bursa
• P. Kostka
  DESY Zeuthen, Zeuthen
• V. Litvinenko
  BNL, Upton, Long Island, New York
• E. Paoloni
  University of Pisa and INFN, Pisa
• A. Polini
  INFN-Bologna, Bologna
• U. Schneekloth
  DESY, Hamburg
• M.K. Sullivan
  SLAC, Menlo Park, California

In a linac-ring electron-proton collider based on the LHC ("LR-LHeC"), the final focusing quadrupoles for the electron beam can be installed far from the collision point, as far away as the proton final triplet (e.g. 23 m) if not further, thanks to the small electron-beam emittance. The inner free space could either be fully donated to the particle-physics detector, or accommodate "slim" dipole magnets providing head-on collisions of electron and proton bunches. We present example layouts for either scenario considering electron beam energies of 60 and 140 GeV, and we discuss the optics for both proton and electron beams, the implied minimum beam-pipe dimensions, possible design parameters of the innermost proton and electron magnets, the corresponding detector acceptance, the synchrotron radiation power and its possible shielding or deflection, constraints from long-range beam-beam interactions as well as from the LHC proton-proton collision points and from the rest of the LHC ring, the passage of the second proton beam, and the minimum beta* for the colliding protons.

• A. Aksoy, O. Yavas
  Ankara University, Faculty of Engineering, Tandogan, Ankara
• H. Aksakal
  N.U, Nigde
• P. Arikan
  Gazi University, Faculty of Arts and Sciences, Teknikokullar, Ankara
• H. Duran Yildiz
  Dumlupinar University, Faculty of Science and Arts, Kutahya
• Z. Nergiz, K. Zengin
  Ankara University, Faculty of Sciences, Tandogan/Ankara
• S. Ozkorucuklu
  SDU, Isparta
• I. Tapan
  UU, Bursa

Turkish Accelerator Center Infrared Free Electron Laser and Bremsstrahlung (TAC IR FEL&Brems.) project aims to produce cw mode FEL in 2.5-250 microns range and to produce bremsstrahlung photons using 15-40 MeV electron beam. The project is supported by State Planning Organization (SPO) of Turkey and is proceeded with inter university collaboration under the coordination of Ankara University. This facility is now called Turkish Accelerator and Radiation Laboratory at Ankara (TARLA) since its building located at Golbasi town 30 km south of Ankara, Turkey It is proposed that the facility will consist of 300 keV thermionic DC gun, two superconducting RF module and two optical resonator systems with 25 and 90 mm period lengths. In this study, the status and road map of the project is presented including some technical details on accelerator and FEL. In addition the research potential of facility is summarized.