ZGOUBI USERS' GUIDE - HEP

4.2 Definition of an Object 41¹q•É•–>Ž>Ž¹–1É11V11© 414–¹ •¹¹ 4Ž@4–•Ž§44©©©11111\\ " \ " \ " \ " q "1V––KOBJ = 3.1: Same as KOBJ = 3, except for the formatting of trajectory coordinate data in FNAME which is muchsimpler, namely, according to the following FORTRAN sequenceOPEN (UNIT = NL, FILE = FNAME, STATUS = ‘OLD’)1 CONTINUEREAD (NL,*,END=10,ERR=99) Y, T, Z, P, S, DGOTO 110 CALL ENDFIL99 CALL ERREADKOBJ = 5: Mostly dedicated to the calculation of first order transfer matrix and various other optical parameters inconjunction with MATRIX or with TWISS. The input data are the stepsizesThe code generates 11 particles¥}S"‹¥| v"¥þr"‹¥}¥I"‹¥|§#"‹¥aOThese values should be small enough, so that the paraxial ray approximation be valid.The last data are the initial coordinates of the reference trajectory [normallyThe reference rigidity O is (negative value allowed).\ "so ¥}Œ"so ¥| r"so ¥þ*"so ¥}¥I"~o ¥|§#"so ¥aO"/"e"k¥"$§"O1 ].¡ ! 1 !KOBJ = 5.1: Same as KOBJ = 5, except for an additional data line giving initial beam ellipse ¹ parameters¹ , , for further transport of these using MATRIX, or for possible use by the FIT procedure.," ÉKOBJ = 6: Mostly dedicated to the calculation of first, second and other higher order transfer coefficients and variousother optical parameters, in conjunction with MATRIX or with TWISS. The input data are the step sizes" É" Éto allow the building up of an object containing 61 particles. The last data are the initial coordinates of the referencetrajectory [normally.¥}S"‹¥| v"¥þr"‹¥}¥I"‹¥|§#"‹¥aOKOBJ = 7: Object with kinematicsThe data and functioning are the same as for KOBJ = 1, except for the following¤`O is not used,¥aO is the kinematic coefficient, such that for particle number ¤ , the initial relative momentum O€ is calculatedfrom the initial angle following1 ¡ ! 1 !\ " \ " \ " \ " \ " q]. The reference rigidity of the beam is O"/"e"$¥"$§"Owhile is in the range1 ¥aOkVŒ ‚O Oas stated under KOBJ = 1\ "so ¥| r"soB B B "~o ¤ r @ V¥|V¥| r"KOBJ = 8: Generation of phase-space coordinates on ellipses.The ellipses are defined by the three sets of data (one set per ellipse)" –" ɹ where É , are the ellipse parameters and© – @å – > –(idem for the (r"$¥ ) or (§©"O ) planes).¹is the emittance encompassed, corresponding to an ellipse with equationThe ellipses are centered respectivelyon,, .The number of samples per plane is ¤§#"$¤¦S"k¤( respectively . If that value is zero, the central value above is assigned."$"$¥"O" É" •" É" Ž