Beam dynamics and expected performance of Sweden’s new storage-ring light source: MAX IV

TLDR

MAX IV will be Sweden's next‑generation high‑performance synchrotron radiation source. The paper presents the beam‑dynamics considerations behind the storage‑ring design and details its expected unique performance. The facility comprises two storage rings for different wavelength ranges, a linac‑based short‑pulse source, and a free‑electron laser, with the main 528‑m ultralow‑emittance ring operating at 3 GeV and built on a novel multibend achromat design that achieves 0.33 nm rad horizontal emittance and sub‑8 pm rad vertical emittance to support nineteen 5‑m dispersion‑free straight sections for state‑of‑the‑art insertion devices. The project has secured funding, with construction slated to begin in 2010 and user operation expected to start in 2015.

Abstract

MAX IV will be Sweden's next-generation high-performance synchrotron radiation source. The project has recently been granted funding and construction is scheduled to begin in 2010. User operation for a broad and international user community should commence in 2015. The facility is comprised of two storage rings optimized for different wavelength ranges, a linac-based short-pulse facility and a free-electron laser for the production of coherent radiation. The main radiation source of MAX IV will be a 528 m ultralow emittance storage ring operated at 3 GeV for the generation of high-brightness hard x rays. This storage ring was designed to meet the requirements of state-of-the-art insertion devices which will be installed in nineteen 5 m long dispersion-free straight sections. The storage ring is based on a novel multibend achromat design delivering an unprecedented horizontal bare lattice emittance of 0.33 nm rad and a vertical emittance below the 8 pm rad diffraction limit for 1 \AA{} radiation. In this paper we present the beam dynamics considerations behind this storage-ring design and detail its expected unique performance.