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<TITLE>BV flag in the Beam command</TITLE>
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EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH
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<H2>Effect of the bv flag in MAD-X</H2>
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When reversing the direction ("V") of a particle in a magnetic field ("B")
while keeping its charge constant, the resulting force V * B changes sign.
This is equivalent to flipping the field, but not the di