Ropert, A.

Paper	Title	Page
WEPLT084	Experimental Frequency Maps for the ESRF Storage Ring	2047
	Y. Papaphilippou, L. Farvacque, E. Plouviez, J.-L. Revol, A. Ropert ESRF, Grenoble J. Laskar IMCCE, Paris Ch. Skokos Academy of Athens, Athens
	Experimental frequency maps have already revealed many unknown characteristics of the ESRF storage ring non-linear dynamics. In the past year, several efforts were undertaken in order to establish this technique as an operational on-line tool. The acquisition time was significantly reduced by collecting data from a dedicated fast BPM system. The problem of beam decoherence was limited by establishing a method for accurate tune determination in a small number of turns, using the information from all the BPMs around the ring. The possibility to explore the off-momentum dynamics by exciting the beam, with synchronous transverse and longitudinal kicks was also investigated. Finally, measurements of resonance driving term amplitudes and phase advances were used to identify the efficiency of resonance corrections.
THPKF033	Prospects for Long-term Lattice Upgrade at the ESRF	2341
	A. Ropert, P. Elleaume, L. Farvacque, Y. Papaphilippou, T. Perron ESRF, Grenoble
	Twelve years after commissioning, the ESRF delivers routinely X-rays of brilliance, a factor hundred higher than the design target, to 45 beamlines. Further long-term improvements to the storage ring performance concern the reduction of the horizontal emittance leading to an increase of the brilliance and/or the increase of the number of beamlines from insertion device source points. In this paper, we review the different scenarios that can be envisaged with keeping untouched the existing tunnel and beamlines. Among them, the concept of the Double DBA structure that combines the reduction of emittance (a factor of 8) and the increase of the number of straight sections (64 instead of 32) looks the most attractive. Some of the challenging issues of such a scheme (squeezed space between magnets, innovative combined function magnets of unprecedented small aperture, small dynamic aperture) will be discussed.
THOACH01	SPEAR3 Commissioning	216
	J.A. Safranek, S. Allison, P. Bellomo, W.J. Corbett, M. Cornacchia, E. Guerra, R.O. Hettel, D. Keeley, N. Kurita, D.J. Martin, P.A. McIntosh, H. Morales, G.J. Portmann, F.S. Rafael, H. Rarback, J.J. Sebek, T. Straumann, A. Terebilo, J. Wachter, C. Wermelskirchen, M. Widmeyer, R. Yotam SLAC/SSRL, Menlo Park, California M.J. Boland, Y.E. Tan ASP, Melbourne J.M. Byrd, D. Robin, T. Scarvie, C. Steier LBNL/ALS, Berkeley, California M. Böge PSI, Villigen H.-P. Chang, C.-C. Kuo, H.-J. Tsai NSRRC, Hsinchu W. Decking DESY, Hamburg M.G. Fedurin, P. Jines LSU/CAMD, Baton Rouge, Louisiana K. Harkay, V. Sajaev ANL/APS, Argonne, Illinois S. Krinsky, B. Podobedov BNL/NSLS, Upton, Long Island, New York L.S. Nadolski SOLEIL, Gif-sur-Yvette A. Ropert ESRF, Grenoble M. Yoon POSTECH, Pohang, Kyungbuk
	Starting in April, 2003, the SPEAR2 storage ring was removed and replaced with a new 500 mA, 3 GeV light source, SPEAR3. The SPEAR2 storage ring had been in use for high energy physics, then synchrotron radiation since 1972. Commissioning of SPEAR3 started on December 8, 2003 and synchrotron radiation will be delivered to the first users on March 8, 2004. SPEAR3 commissioning will be reviewed, including discussion of diagnostics, orbit control, optics correction and high current studies.
	Video of talk
	Transparencies