Speaker
Description
Nonlinear integrable optics is a promising design approach for suppressing fast collective instabilities. To study it experimentally, a new storage ring, the Integrable Optics Test Accelerator (IOTA), was built at Fermilab. IOTA has recently completed its fourth scientific run, achieving the design 150 MeV energy and significantly improving on various beam parameters. We present the results of beam dynamics studies of the quasi-integrable Henon-Heiles octupole system using a new equal-phase-advance spacing. We obtained tune spread and dynamic aperture scaling in agreement with tracking simulations and robust to perturbations. A new technique of direct fitting to the nonlinear lattice was developed to recover phase space dynamics, showing improved invariant jitter consistent with the intended effective Hamiltonian. We present details of the analysis and the results, and outline plans towards proton studies and a direct demonstration of reduced beam losses in the intense space charge regime.
| Paper status | Resubmitted proceeding files received and assigned to an editor. Accepted by Submitter. |
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