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TY - CONF
AU - Aumon, S.
AU - Groß, K.
AU - Ondreka, D.
AU - Sorge, S.
ED - Petit-Jean-Genaz, Christine
ED - Arduini, Gianluigi
ED - Michel, Peter
ED - Schaa, Volker RW
TI - Transition Energy Crossing in the Future FAIR SIS-100 for Proton Operation
J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014
C1 - Dresden, Germany
T2 - International Particle Accelerator Conference
T3 - 5
LA - english
AB - The FAIR project foresees to deliver an intense single bunch beam with 2·10¹³ protons of 50ns duration to the experiments. Besides the original γ_{t}-shift scenario, an alternative RF proton cycle has been recently studied: the transition energy is crossed with possibly a gamma transition jump. The flexibility of the lattice allowing to change the value of γ_{t}, a transition crossing has been considered for two possible energies. This challenging scenario is limited by several constraints such as space charge, a small momentum acceptance and by the required RF manipulations aiming to produce the final single bunch beam in the future SIS-100. This paper focuses on how the high intensity beam would suffer of the mismatch in bunch length at transition and new sets of beam parameter are defined for the proton beam. The jump quadrupole system is also presented. The applicability of the foreseen longitudinal feedback system to cure quadrupolar oscillations is also discussed in this paper.
PB - JACoW
CP - Geneva, Switzerland
SP - 1591
EP - 1593
KW - space-charge
KW - proton
KW - quadrupole
KW - synchrotron
KW - feedback
DA - 2014/07
PY - 2014
SN - 978-3-95450-132-8
DO - 10.18429/JACoW-IPAC2014-TUPRI018
UR - http://jacow.org/ipac2014/papers/tupri018.pdf
ER -