| Title |
Early Tests and Simulation of Quasi-Integrable Octupole Lattices at the University of Maryland Electron Ring |
| Authors |
- K.J. Ruisard, H. Baumgartner, B. Beaudoin, I. Haber, T.W. Koeth, D.B. Matthew
UMD, College Park, Maryland, USA
|
| Abstract |
Nonlinear quasi-integrable optics is a promising development on the horizon of high-intensity ring design. Large amplitude-dependent tune spreads, driven by strong nonlinear magnet inserts, lead to decoherence from incoherent tune resonances. This reduces intensity-driven beam loss while quasi-integrability ensures contained orbits. The experimental program at the University of Maryland Electron Ring (UMER) will explore the performance of a strong octupole lattice at a range of operating points. Early measurements use a distributed octupole lattice, consisting of several small octupole inserts. We vary lattice tune to change the quasi-integrable condition as well as probe behavior near different resonant conditions. Simulation results show there should be invariant conservation under carefully chosen conditions. We discuss the effect of steering errors on the lattice performance and on-going efforts to reduce these errors. We also discuss plans for a single-channel insert.
|
| Funding |
Work and travel supported by NSF GRFP, NSF Accelerator Science Program, DOE-HEP and UMD Graduate School ICSSA award. |
| Paper |
download THPM8X01.PDF [1.361 MB / 6 pages] |
| Slides |
download THPM8X01_TALK.PDF [56.742 MB] |
| Conference |
HB2016, Malmö, Sweden |
| Series |
ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams (57th) |
| Proceedings |
Link to full HB2016 Proccedings |
| Session |
Working Group A - Session 7 |
| Date |
07-Jul-16 16:00–18:00 |
| Main Classification |
Beam Dynamics in Rings |
| Keywords |
octupole, lattice, distributed, quadrupole, simulation |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Mohammad Eshraqi (ESS, Lund, Sweden); Garry Trahern (ESS, Lund, Sweden); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-185-4 |
| Published |
August 2016 |
| Copyright |
|
