Multi-undulator spiral compact light source

A spiral compact light source based on accelerator technology with multiple straight sections for implementing insertion devices, the compact light source comprising:

• a) a foot print requiring a floor space not larger than for a compact source with only one undulator;
• b) a plurality of storage rings combined in a spiral loop shape and including an uppermost loop and a lowermost loop;
• c) said spiral loops being connected by rotation of quarter arcs without vertical transfer sections;
• d) a return path from said uppermost loop to said lowermost loop being displaced by introducing a matching section in arc symmetry points of said lowermost loop and said uppermost loop not interfering with a structure of said storage rings;
• e) accelerator systems including injection, RF-acceleration, electron beam manipulating devices and diagnostics being only required once, as compared to a planar configuration of a plurality of storage rings;
• f) a ring filling having a gap defining an ion clearing efficiency being three times larger than for a duty cycle being equivalent to a single facility for alleviating average current limiting ion trapping effects, or
• g) an increased number of bunches and average electron beam intensity for a gap identical to a single loop facility, causing an overall central cone radiation power to be increased;
• and
• h) two anti-symmetrically disposed Lambertson septa for a top-up injection from a booster ring into said storage rings.