Jim Crittenden (empowered by GH, Carol Johnstone, Chris Mayes)

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Presentation transcript:

Jim Crittenden (empowered by GH, Carol Johnstone, Chris Mayes) CERL 6.8: Complete Linear Optics First optics since CERL 3.0 (August, 2007) Now incorporates CESR (Q09W-B25E), dual-energy turnaround, re-designed linacs, new Wilson Lab x-ray lines, and more Jim Crittenden (empowered by GH, Carol Johnstone, Chris Mayes) ERL @ CESR, 6 November 2008

ERL@CESR/ J.A.Crittenden CERL 3.0 Optics 6 November 2008 ERL@CESR/ J.A.Crittenden

ERL@CESR/ J.A.Crittenden CERL 6.8 Optics 6 November 2008 ERL@CESR/ J.A.Crittenden

ERL@CESR/ J.A.Crittenden CERL 6.8 Emittance Growth 6 November 2008 ERL@CESR/ J.A.Crittenden

ERL@CESR/ J.A.Crittenden CERL 6.8 South Arc 6 November 2008 ERL@CESR/ J.A.Crittenden

ERL@CESR/ J.A.Crittenden CERL 6.8 North Arc 6 November 2008 ERL@CESR/ J.A.Crittenden

CERL 6.8: CESR (G-line wiggler - B25E) 6 November 2008 ERL@CESR/ J.A.Crittenden

Element Spacing Improved (Example: South Arc Cell B) CERL 3.0 CERL 6.8 6 November 2008 ERL@CESR/ J.A.Crittenden

ERL@CESR/ J.A.Crittenden Next Steps Design second-order optics Use 4-m dipoles rather than 2.5 m dipoles in TA/TB Reduce number of matching quads in TA/TB Introduce multi-pass elements in TA/TB Introduce horizontal corrector after dump Make 1-inch round aperture everywhere except CESR 6 November 2008 ERL@CESR/ J.A.Crittenden