Paper  Title  Page 

WEPMY002  SLRI Beam Test Facility Development Project  2539 


Funding: This work is supported by the National Science and Technology Development Agency (NSTDA) under contract FDAC02558855TH. The SLRI Beam Test Facility (SLRI BTF) is a part of the future upgrades of the SLRI accelerator complex. Upon completion, SLRI BTF will be able to produce electron test beams with the number of electrons ranging from a few to several thousand electrons per bunch. The project is divided into three stages based on the complexity of the electron reduction setups. The simple setup for the initial stage has been implemented without any modifications to the current highenergy beam transport line (HBT) while additional elements together with an existing 4degree dipole are required for the shortterm setup in the second stage. For the last stage, a new dedicated transfer line equipped with a highresolution energy selector will be constructed to direct the electron beam from the HBT beam line to an experimental station. This project aims to provide a defined number of electrons with maximum energy of 1 GeV for calibration and testing of high energy detectors as well as other beam diagnostic instrumentations. 

DOI •  reference for this paper ※ DOI:10.18429/JACoWIPAC2016WEPMY002  
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THPMR048  Analysis of Nonlinear Effects for IDs at the SPS Storage Ring  3512 


Funding: Synchrotron Light Research Institute (Public Organization) To generate intense and high energy synchrotron radiation at the Siam Photon Source (SPS) 1.2 GeV storage ring, two insertion devices (IDs), namely, a 2.2 T hybrid multipole wiggler (MPW) and a 6.5 T superconducting wavelength shifter (SWLS), have been installed and operated since 2013. The angular kicks due to the nonlinear effects generated by the IDs represented by kick maps were used in our analysis. The optics distortion was compared to the ones obtained from calculation using hardedge model and measurement results. In order to investigate the effects of IDs on the beam dynamics, Frequency Map Analysis (FMA) was employed. The effects of the IDs and their compensation are presented herewith. 

DOI •  reference for this paper ※ DOI:10.18429/JACoWIPAC2016THPMR048  
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THPMR049  Minimization of Nonlinear Effects of Insertion Devices at SPS Storage Ring  3515 


Funding: Synchrotron Light Research Institute PO. Box 93 Nakhon Ratchasima 30000 Thailand Nonlinear effects of insertion devices were studied for the Siam Photon Source (SPS) storage ring. Despite the fact that shimming technique was used to minimize the nonlinear components of magnetic field integral arising from random errors, the nonlinear dynamics effects still remain. It was found that calculated dynamic field integrals are largest in the 2.2 T Hybrid Multipole Wiggler (MPW). Dynamics effects of insertion devices are attributed to the wiggling trajectory of electron in the region of magnetic field rolloff due to finite pole width. For better and more effective operation of the SPS storage ring, multipole components of the dynamic field integral in the MPW have to be further reduced. 

DOI •  reference for this paper ※ DOI:10.18429/JACoWIPAC2016THPMR049  
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