The Advanced Photon Source (APS) injector complex includes an option for rf photocathode (PC) gun beam injection into the 450-MeV S-band linac. At the 150-MeV point. a four-dipole chicane was used to compress the micropulse bunch length from a few ps to sub-0. 5 ps (FWHM). https://www.roomyroomers.shop/product-category/cushion-stools/