In-vacuum undulators (IVUs), in which permanent magnets are placed inside the
vacuum chamber to allow for a narrower gap operation, have two technical
challenges; one is a strong attractive force between acting on magnetic arrays,
and the other is a stringent requirement on magnetic materials to avoid
demagnetization during the bake-out process and long-term operation. The former...
In order to continue to provide world-class capabilities and cutting-edge tools to support scientific endeavors, SOLEIL launched its upgrade program, known as SOLEIL II, in 2020. This project is based on a very aggressive accelerator design aiming at an ultra-low emittance of about 80 pm.rad at 2.75 GeV, providing a 10 m RMS round electron beam and more than 100 times brighter photon beams....
DESY is planning a major upgrade of the existing PETRA III synchrotron light source to an ultra-low emittance ring PETRA IV
We describe the status of machine project with highlights on the expected performance, a description of the main subsystems,
and the current prototype programme.
The recent improvements in the field of synchrotron light sources push the limits of brightness and pave the way for new scientific research. The upgrade of Synchrotron SOLEIL, called SOLEIL II, aims at optimizing photon production by reducing the natural horizontal emittance of the electron beam to less than 100 pm.rad, compared to 3.9 nm.rad currently. However, the new lattice [1] imposes a...
Insertion Device (ID) Group at the National Synchrotron Light Source-II has been involved in the following activities: Installation and maintenance of the HEX-Superconducting Wiggler (SCW)[1], Development of SC 2T-three pole wiggler (3PW) for NEXT-III project, Laboratory Directed Research and Development (LDRD) for SC adaptive gap undulator (AGU)[2], NSLS-II Experimental Tools II (NEXT-II)...
The small beam size at the straight sections of for fourth generation light sources has opened the possibility to use small-diameter circular vacuum chambers for insertion devices. An elliptically polarizing X-type undulator with a small circular vacuum chamber and symmetric placement of the magnet rows around the vacuum chambers is being developed at LBL. This type of undulator is suitable...
