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sign-system.txt

Kyle Hazelwood, 01/15/2015 11:47 AM

 
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*+ 10162013
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The meanings of signs for orbit(mm) and corrector amps:
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In standard case BPM are wired with signs horz: out +, in -; vert: up +, down -,
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Correctors with kick current signs       horz: out +, in -; vert: up +, down -.
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In this 'standard system corrections input to algo is dx = -x + deso(desired orbit)
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algo output dthet in milli-radian with signs horz: + out, - in; vert: + up, - down
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- For recycler in horz either bpm or correcotrs is reversed so that
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reversing dthet is needed, dthet *= signs[HORZ], signs[2] = {-1.,1.}
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- For MI in vertical either bpm or correcotrs is reversed so that
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 reversing dthet is needed, dthet *= signs[VERT], signs[2] = {1.,-1.}