Title :
Development of the Next Generation Superconductive Undulators for Synchrotron Light Sources
Author :
Boffo, Cristian ; Baumbach, Tilo ; Bernhard, Axel ; Borlein, Markus ; Casalbuoni, Sara ; Grau, Andreas ; Hagelstein, Michael ; Kostka, Barbara ; Mashkina, Elena ; Peiffer, Peter ; Rossmanith, Robert ; Walter, Wolfgang ; Wollmann, Daniel
Author_Institution :
Babcock Noell GmbH, Wurzburg, Germany
fDate :
6/1/2009 12:00:00 AM
Abstract :
Superconducting insertion devices are very attractive for synchrotron light sources. For a given gap and period length, higher fields can be reached in respect to permanent magnet insertion devices thus permitting to reach higher photon fluxes. A new R&D program has been recently launched at ANKA aiming for the development of the next generation superconducting insertion devices for light sources. A cold bore superconducting undulator (14 mm period length, 100 full periods long) is installed in the ANKA storage ring since three years. This will be replaced by an improved version which shows a more efficient cooling system and a high precision design aiming for reduced field errors. Two additional devices are scheduled. One will allow to electrically switch the period length between 15 mm and 45 mm corresponding to an undulator and a wiggler mode, respectively. The other will be optimized for third generation light sources. It will be capable of tolerating higher beam heat loads up to 6 W while achieving very small field errors. The field error minimization will be obtained through the use of new shimming concepts which will correct inaccuracies due to manufacturing tolerances. This paper describes the technical concepts of the three projects.
Keywords :
cooling; electron beams; light sources; particle beam bunching; particle beam injection; permanent magnets; research and development; storage rings; superconducting magnets; wigglers; ANKA storage ring; R&D program; beam energy Injection; bunch length; cooling system; electron beam; field error minimisation; next generation superconductive undulators; permanent magnet insertion devices; photon flux; shimming techniques; size 15 mm to 45 mm; superconducting insertion devices; superconducting magnets; synchrotron light sources; wiggler mode; Cryogen free; NbTi; insertion device; superconducting magnet; superconducting undulator;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2018515