ABSTRACT

1. 300 C = 16 m 60 [ ELECTRON DEMO OF MULTIPASS ARC FOR MUON RLA** S.A. Bogacz2#, K.B. Beard1, V.S. Morozov2, Y.R. Roblin2 1Muons Inc, 2Jefferson Lab C = 2.3 m G [kGauss/cm] BO01   0 BO02   0 BO03   0.548888 BO04   -0.690966 BO05   0.796576 BO06   -0.627358 BO07   0.596019 BO08   -0.596693 BO09   0.652984 BO10   -0.777233 BO11   0.689622 BO12   -0.523101 Muons, Inc. ‘Integrated’ Magnet: 24 combined function magnets (6.5 cm long, 3 cm hor. aperture) separated by 3 cm super-period ABSTRACT A new concept of passing multiple beams through the same arc magnets at the same time is being explored.1 It offers a number of advantages; including simplifying the switchyard, removing the necessity of vertical chicanes, and perhaps lower cost. It simultaneously transports muons of opposite signs travelling in opposite directions. The arc consists of 7 identical superperiods; each superperiod consists of 24 combined function magnets. The superperiod is symmetric, so there are 12 degrees of freedom available; also the angle between the individual superperiods may be adjusted to satisfy the matching conditions. We propose constructing an electron demo of the muon RLA with multipass arcs, with the beam energy scaled by the ratio of the electron to muon masses (mμ/me ~ 200x) and the size scaled by ratio of CEBAF-standard SRF frequency to the muon RLA frequency (1497MHz/201MHz ~ 7.5x). Multipass arc concept Scaled Electron Demo 7 super-periods (1 out +5 in +1 out) 300 ‘Integrated’ Magnet: 24 combined function magnets (6.5 cm long, 3 cm hor. aperture) separated by 3 cm 2  7  JlabElectron Model of MuonRLA = JEMMRLA Panofsky Magnets2 FUTURE PLANS With support of Jlab management, we are continuing to study the effects of misalignments and mispowerings and are developing a more detailed concept for a multi-purpose facility; it may be used to explore the effect of errors, measure the preservation of spin tests, beam dynamics studies, and serve as a prototype for small medical and industrial accelerators. In use at Jlab’s FEL. References Acknowledgements *Supported in part by US DOE STTR Grant DE-FG02-08ER86351 #bogacz@jlab.org [1] V.S.Morozov et al, “MultipassMuon RLA Return ArcsBased on Linear Combined Function Magnets”, Proc. IPAC2011 [2]George H. Biallas et al, “Combined Panofsky Quadrupole & Corrector Dipole”, Proc. PAC2007