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[Ext-GDE-87] comment from LLRF team (CCR#20)



Dear Toge-san,

This is the comment about CCR#20 from ilc-llrf team.

1. 6% overhead (3% amplitude overhead) is too small for feedback compensation of Lorentz force detuning, beam loading, exception handling (such as quench). 2. Operationa experiences at FLASH, SNS indicate >10% (in amplitude) will be necessary for stable operation.

Best wishes.
Shin



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Shinichiro MICHIZONO
Accelerator Laboratory
High Energy Accelerator Research Organization(KEK)
1-1 Oho, Tsukuba, Ibaraki 305-0801 Japan

 e-mail: shinichiro.michizono@xxxxxx
tel:+81.298.64.5697
     +81.298.64.5200 + 4641 (PHS)
fax:+81.298.64.3182
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