The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Zhang, Q.L. AU - Jiang, B.C. AU - Tian, S.Q. AU - Zhao, Z.T. AU - Zhou, Q.G. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Study on Beam Dynamics of a Knot-APPLE Undulator Proposed for SSRF J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - A new type of undulator, Knot-APPLE undulator, is proposed for SSRF as a solution to reduce the heat load of on-axis high harmonics without losing its capability of tuning synchrotron polarization. It will be applied for SSRF Photoemission Spectroscopy beamline (PES-beamline) in the near future. Impact of the undulator on the beam dynamics has been studied based on the 3D magnetic field model and kick map analysis. Linear optics can be retained by quadrupole compensation within two adjacent cells. Dynamical aperture (DA) shrinkage has been found in the tracking and optimized with sextupoles. An active correction scheme of current strips is studied to compensate the kick maps, and both the linear and nonlinear effects are suppressed. PB - JACoW CP - Geneva, Switzerland SP - 1669 EP - 1671 KW - polarization KW - undulator KW - sextupole KW - quadrupole KW - operation DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-TUPJE022 UR - http://jacow.org/ipac2015/papers/tupje022.pdf ER -