TY - CPAPER
AU - Davidyuk, I.V.
AU - Shevchenko, O.A.
AU - Tcheskidov, V.G.
AU - Vinokurov, N.
TI - The Prototype of New Variable Period Undulator for Novosibirsk Free Electron Laser.
J2 - Proc. of FEL2015
AB - To improve the parameters of the second stage Novosibirsk free electron laser one plans to replace the existing electromagnetic undulator by permanent-magnet variable-period undulator (VPU). The VPUs have several advantages compared to conventional undulators, which include wider radiation wavelength tuning range and an option to increase the number of poles for shorter periods with constant undulator length. Both these advantages will be realized in the new undulator under development in Budker INP. The idea of the permanent-magnet VPU was proposed just several years ago and it has not been properly tested yet. There are some technical problems, which have to be solved before this idea can be implemented in practice. To check the solution of these problems we designed and manufactured a small undulator prototype, which has just several periods. In this paper, the results of mechanical and magnetic measurements of this undulator prototype are presented and compared with simulations.
PB - JACoW
CY - Geneva, Switzerland
SP - 677
EP - 680
KW - undulator
KW - simulation
KW - permanent-magnet
KW - FEL
KW - electron
DA - 2015/12
PY - 2015
SN - 978-3-95450-134-2
DO - 10.18429/JACoW-FEL2015-WEP051
UR - http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/wep051.pdf
ER -