TY  - CONF
AU  - Chaikovska, I.
AU  - Apyan, A.
AU  - Chehab, R.
AU  - Enomoto, Y.
AU  - Faus-Golfe, A.
AU  - Furukawa, K.
AU  - Han, Y.
AU  - Kamitani, T.
AU  - Martyshkin, P.V.
AU  - Miyahara, F.
AU  - Ogur, S.
AU  - Oide, K.
AU  - Papaphilippou, Y.
AU  - Rinolfi, L.
AU  - Satoh, M.
AU  - Seimiya, Y.
AU  - Sievers, P.
AU  - Suwada, T.
AU  - Zimmermann, F.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Positron Source for FCC-ee
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The FCC-ee is a high-luminosity, high-precision circular collider to be constructed in a new 100 km tunnel in the Geneva area. The physics case is well established and the FCC-ee operation is foreseen at 91 GeV (Z-pole), 160 GeV (W pair production threshold), 240 GeV (Higgs resonance) and 365 GeV (t-tbar threshold). Due to the large 6D production emittance and important thermal load in the production target, the positron injector, in particular the positron source, is one of the key elements of the FCC-ee, requiring special attention. To ensure high reliability of the positron source, conventional and hybrid targets are currently under study. The final choice of the positron target will be made based on the estimated performances. In this framework, we present a preliminary design of the FCC-ee positron source, with detailed simulation studies of positron production, capture and primary acceleration.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 424
EP  - 427
KW  - positron
KW  - target
KW  - linac
KW  - electron
KW  - collider
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPMP003
UR  - http://jacow.org/ipac2019/papers/mopmp003.pdf
ER  - 

TY  - CONF
AU  - Zimmermann, F.
AU  - Abelleira, J.L.
AU  - Abramov, A.
AU  - Amorim, D.
AU  - Antipov, S.A.
AU  - Apyan, A.
AU  - Arsenyev, S.
AU  - Barranco García, J.
AU  - Benedikt, M.
AU  - Bruce, R.
AU  - Burkart, F.
AU  - Cai, Y.
AU  - Crouch, M.P.
AU  - Cruz Alaniz, E.
AU  - Fartoukh, S.D.
AU  - Giovannozzi, M.
AU  - Goddard, B.
AU  - Guillermo Cantón, G.
AU  - Hofer, M.
AU  - Keintzel, J.
AU  - Kersevan, R.
AU  - Mertens, V.
AU  - Mether, L.
AU  - Molson, J.
AU  - Muttoni, Y.
AU  - Nosochkov, Y.M.
AU  - Ohmi, K.
AU  - Oide, K.
AU  - Osborne, J.A.
AU  - Parma, V.
AU  - Pieloni, T.
AU  - Pikhartova, H.
AU  - Raginel, V.
AU  - Redaelli, S.
AU  - Risselada, T.
AU  - Rivkin, L.
AU  - Ruehl, I.
AU  - Salvant, B.
AU  - Schoerling, D.
AU  - Seryi, A.
AU  - Shaposhnikova, E.N.
AU  - Tambasco, C.
AU  - Tavian, L.J.
AU  - Todesco, E.
AU  - Tommasini, D.
AU  - Tomás, R.
AU  - Valchkova-Georgieva, F.
AU  - Venturi, V.
AU  - Wollmann, D.
AU  - Zhou, D.
AU  - van Riesen-Haupt, L.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Updated High-Energy LHC Design
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - We present updated design parameters for a future High-Energy LHC. A more realistic turnaround time has led to a revision of the target peak luminosity, as well as a choice of a larger IP beta function, and longer physics fills. Pushed parameters of the Nb₃Sn superconducting cable together with a modified layout of the 16 T dipole magnets resulted in revised field errors, updated dynamic-aperture simulations, and an associated re-evaluation of injector options. Collimators in the dispersion suppressors help achieve satisfactory cleaning performance. Longitudinal beam parameters ensure beam stability throughout the cycle. Intrabeam scattering rates and Touschek lifetime appear benign.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 524
EP  - 527
KW  - injection
KW  - emittance
KW  - proton
KW  - impedance
KW  - damping
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPMP037
UR  - http://jacow.org/ipac2019/papers/mopmp037.pdf
ER  - 

TY  - CONF
AU  - Dutheil, Y.
AU  - Alden, S.E.
AU  - Alemany-Fernández, R.
AU  - Apyan, A.
AU  - Bartosik, H.
AU  - Bessonov, E.G.
AU  - Biancacci, N.
AU  - Bosco, A.
AU  - Bruce, R.
AU  - Castelli, F.
AU  - Curatolo, C.
AU  - Czodrowski, P.
AU  - Fedosseev, V.
AU  - Gibson, S.M.
AU  - Goddard, B.
AU  - Hirlaender, S.
AU  - Jowett, J.M.
AU  - Kersevan, R.
AU  - Kowalska, M.
AU  - Kroeger, K.
AU  - Lamont, M.
AU  - Manglunki, D.
AU  - Martens, A.
AU  - Molson, J.
AU  - Nevay, L.J.
AU  - Petrenko, A.V.
AU  - Petrillo, V.
AU  - Sapinski, M.
AU  - Schaumann, M.
AU  - Serafini, L.
AU  - Stöhlker, T.
AU  - Weber, G.
AU  - Wu, Y.K.
AU  - Zimmermann, F.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Gamma Factory at CERN: Design of a Proof-of-Principle Experiment
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The Gamma Factory (GF) initiative proposes to create novel research tools at CERN by producing, accelerating and storing highly relativistic partially stripped ion beams in the LHC rings and by exciting their atomic degrees of freedom by lasers, to produce high-energy photon beams. Their intensity would be several orders of magnitude higher than those of the presently operating light sources in the particularly interesting gamma-ray energy domain reaching up to 400 MeV. In this energy domain, the high-intensity photon beams can be used to produce secondary beams of polarized electrons, polarized positrons, polarized muons, neutrinos, neutrons and radioactive ions. Over the years 2017-2018 we have demonstrated that these partially stripped ion beams can be successfully produced, accelerated and stored in the CERN accelerator complex, including the LHC. The next step of the project is to build a proof of principle experiment in the SPS to validate the principal GF concepts. This contribution will present the initial conceptual design of this experiment along with its main challenge - the demonstration of the fast cooling method of partially stripped ion beams.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 685
EP  - 688
KW  - photon
KW  - laser
KW  - experiment
KW  - electron
KW  - cavity
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPRB052
UR  - http://jacow.org/ipac2019/papers/moprb052.pdf
ER  -