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ZGOUBI USERS' GUIDE - HEP

ZGOUBI USERS' GUIDE - HEP

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88 4 DESCRIPTION OF THE AVAILABLE PROCEDURESpotential approximated to the 6th order in and ˜£4 ¡M 4 1Ž ¡ †\£4 N – ¡P wP wP w\q\q > \q> >> >> P P PDODECAPO: Dodecapole magnet (Fig. 21)The meaning of parameters for DODECAPO is the same as for QUADRUPO.In fringe field regions the magnetic §#"$Œ"[ field and its derivatives up to fourth order are derived from the scalar¡§#"kS"e o s 0U with£ 4Outside fringe field regions, or everywhere in sharp edge dodecapole ( ³ Š ³byK\) , ¡ §#"kS"e in the magnet is givenŒ¡ • £ 4 NFigure 21: Dodecapole magnet

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