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THE STATUS OF TURKISH LIGHT SOURCE

THE STATUS OF TURKISH LIGHT SOURCE. Dr. Zafer Nergiz Nigde University. Outline. The Goals of the machine New storage ring design parameters Synchrotron radiation Comparison of other light sources with TURKAY Conclusion.

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THE STATUS OF TURKISH LIGHT SOURCE

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  1. THE STATUS OF TURKISH LIGHT SOURCE Dr. Zafer Nergiz NigdeUniversity

  2. Outline • TheGoals of themachine • New storage ring designparameters • Synchrotronradiation • Comparison of otherlightsourceswith TURKAY • Conclusion Zafer Nergiz, UPHUK-5, 07.09.2013

  3. The goals of the storage ring suggested after LSUM-2012 (Light Source User Meeting) • 3 GeV electron beam energy • Low emittance; below 1 nm rad • Short circumference; below 500 m • A new ring is designed according to the suggestions in user meeting • Linear and nonlinear effects are investigated • The radiation properties are investigated. • Some special cases (such as 0 dispersion) options are compared Zafer Nergiz, UPHUK-5, 07.09.2013

  4. The Parameters and Lattice of The storage ring The storage ring is composed with 18 main cells Main cell consists of 4 bending magnets and 4 different type 16 quadrupol magnets. The circumference is 467 m Natural horizantalemittance is 0.68 nm rad. The number of straight section is 18 Zafer Nergiz, UPHUK-5, 07.09.2013

  5. BeamParameters The working point is chosen where the third order resonance driving terms and tune shifts are as small as possible. 6 families of sextupol are used to correct chromaticity and to compensate nonlinearities. The length of straight sections is 6 m. The bending magnets are 1.8 m length and the magnetic field in the bending magnets is 0.48 T Zafer Nergiz, UPHUK-5, 07.09.2013

  6. BeamParameters vs. Momentum offset DQxandDQy,Emittance, Betax, Betay, vs. momentum deviation Zafer Nergiz, UPHUK-5, 07.09.2013

  7. Touschek Lifetime One of the issuesof a low emittancestorage ring is Touschek lifetime Touschek lifetime is 10.2 hfor 3.5 MV rfvoltage. It is planned to operate the machine in top-upmode Zafer Nergiz, UPHUK-5, 07.09.2013

  8. Nonlinear Beam Dynamics: Tracking According to MADX simulation the shape deformation of phase ellipse start x=0.015 m and y=0.01 m Phase space tracking in the horizontal and vertical plane at the center of straight section (1000turn) Zafer Nergiz, UPHUK-5, 07.09.2013

  9. Nonlinear Beam Dynamics: Dynamic aperture The dynamic aperture is the stable transverse area for the particle safely without getting defused or lost. a) Dynamical aperture for different momentum offset without magnet error (%3, %0 , %-3) b) Effects of magnet errors to the dynamical aperture (1024 turn) Zafer Nergiz, UPHUK-5, 07.09.2013

  10. NonlinearBeam Dynamics: FMA Frequency Map Analysis (FMA) is a numerical method which is a possible way to understand the effect of resonance to the dynamic aperture. Diffusion rate of frequency map analyses from tracking results. (the colors are for log10(Dnx+Dny)) (1024 turn). Zafer Nergiz, UPHUK-5, 07.09.2013

  11. SynchrotronRadiation In-vacuum undulator (IU), Cryogenic permanent-magnet undulator (CU) Superconducting insertion devices (SU) Zafer Nergiz, UPHUK-5, 07.09.2013

  12. Effects of the insertion devices Effects of the ID to the emittance and energy spreead investigated by the formula; where Effect of the CU18 to the emittance and energy spread Zafer Nergiz, UPHUK-5, 07.09.2013

  13. Zerodispersionoption In zero dispersion option the emittance is 1.18 nm rad Betax=17 m, Betay=7 m Other parameters approx same Zafer Nergiz, UPHUK-5, 07.09.2013

  14. Middle dispersionoption In middle dispersion option the emittance is 0.85 nm rad Betax=15 m, Betay=7 m, Dx=0.06 m Other parameters approx. same Zafer Nergiz, UPHUK-5, 07.09.2013

  15. TheEmittanceandCircumference vs. EnergyforTheDifferentLightSourcesAroundtheworld TAC-SI TAC-SI Ref: NomNamkung IPAC2010 Presentation Zafer Nergiz, UPHUK-5, 07.09.2013

  16. Conclusions Low emittance storage ring is designed. It is reached to 0.67 nm rad emittance with 467 m ring circumference Nonlinear effects also investigated Different options are compared. It is planned to completethemachinereportincludingmainsub-systemsup to mid of nextyear in paralel to thescientificcasereport. Thanks for your attentions Zafer Nergiz, UPHUK-5, 07.09.2013

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