ZGOUBI USERS' GUIDE - HEP

146 Keywords and input data formatting³4, :, :Åif Ž q NBS, 1 > , Å7, Å7>>transforms to ¡ Vtransforms to ¡ V¨¨qqyy ɵɾŽî64 w ² MÃ*¬ Å 1 7‰ ‰if NFACE = 3LATERAL FIELD BOUNDARY(See ENTRANCE FIELD BOUNDARY)Next 3 records only if NFACE = 3, Fringe field parameters cm, (cm) 2*ENC, , shift 0-6, 6*no dim., cm I, 7*E, , , , , , Positioning and shape of the lateral EFB; 2*deg, 5cm 7*ERM3 is the radial position on azimut ACENT1 2 UNBS Option index for perturbations to the field map normally 0 Iif NBS = 0if NBS = -2Normal value. No other record requiredThe map is modified as follows:if NBS = -1the map is modified as follows:1 4¡ ¡ 4 ¡µ ¬ µ‚ɬ µ M « cm, no dim. 2*Eyy É Z « deg, no dim. 2*E¡ ¡ 4 ¡Introduction of NBS shimsFor I = 1, NBSThe following 2 records must be repeated NBS times1 7, ³ Radial and angular limits of the shim; ³ is unused 2*cm, 2*deg, cm 5*EÁ G ¹ É , , , geometrical parameters of the shim 2*deg, 4*E2*no dim.IORDRE Degree of interpolation polynomial: 2, 4 or 25 I2 = second degree, 9-point grid25 = second degree, 25-point grid4 = fourth degree, 25-point gridXPAS Integration step cm EKPOS Positioning of the map, normally 2. Two options: 1-2 Iif KPOS = 2Positioning as follows:RE, TE, RS, TS Radius and angle of reference, respectively, cm, rad, cm, rad 4*Eat entrance and exit of the map.if KPOS = 1Automatic positioning of the map, by means ofO ¥ reference relative momentum no dim. E