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Why we should worry about beam 6D brightness

Why we should worry about beam 6D brightness. Max Zolotorev AFRD LBNL. 6D Brightness. FEL gain and B 6 : estimations. start with small signal gain. Derivation based on variational formalism developed by Ming Xie and coworkers but with B 6 scaling gives:. gain for optimal  and  E.

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Why we should worry about beam 6D brightness

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  1. Why we should worry about beam 6D brightness Max Zolotorev AFRD LBNL

  2. 6D Brightness FEL gain and B6 : estimations start with small signal gain

  3. Derivation based on variational formalism developed by Ming Xie and coworkers but with B6 scaling gives:

  4. gain for optimal  and E Mmin/Mopt

  5. LCLS after longitudinal heater B6gun / 8 contour line 2.5 % contour line 10 % For present LCLS design only B4gun is important For low charge or beam conditioning or both B6gun must be considered

  6. LCLS low charge Mg Q pC  = 28 m ;  = 1 pC S. Reiche, P. Musumeci, C. Pellegrini, J.B. Rosenzweig

  7. Length of wiggler

  8. Power for laser wiggler in free space For brightest sours (LCLS) gun, x=1.5Å, L=1m and b = x P ~ 3 1016 Lw/L g Watt EL~ 200 (Lw/L g )2 kJ

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