The SPEAR3 Upgrade Project at SLAC | Zendy

Catherine Lecocq | Zendy

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The SPEAR3 Upgrade Project at SLAC

Author(s) -

Catherine Lecocq

Publication year - 2004

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/839601

Subject(s) - upgrade , storage ring , ring (chemistry) , magnet , position (finance) , physics , particle accelerator , synchrotron , beam (structure) , cover (algebra) , electrical engineering , engineering , nuclear physics , mechanical engineering , computer science , optics , operating system , chemistry , organic chemistry , finance , economics

A major upgrade of an existing synchrotron light source at SLAC was completed in December 2003. A new machine called SPEAR3 will operate at 3 GeV with a current of 500 mA. Presently it is fully operational at 100 mA. From an alignment perspective the primary goal was to fiducialize and position newly manufactured magnets and vacuum chambers in the ring to better than 250 pm globally. A critical complication was to recreate the old position of the orbital beam path in the new ring so that some existing tangential beamlines could be preserved. This paper will cover the survey and alignment techniques and results of this new ring.

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