ZGOUBI USERS' GUIDE - HEP

4.4 Optical Elements and related numerical procedures 69¼qCHANGREF ? § ² ¢ C\ "$ ² ¢ CHANGREF ? §§CHANGREF ? §§%%%%%%qqqqAUTOREF: Automatic transformation to a new reference frameAUTOREF positions the new reference frame following 3 options:If ’ ·, AUTOREF is equivalent to"k´v¨ A so that the new reference frame is at the exit of the last element, with particle 1 at the origin with its horizontal angle set†\to .¢ If ’ , it is equivalent toso that the new reference frame is at the "$% positionof the waist (calculated automatically in the same way asfor IMAGE) of the three rays number 1, 4 and 5 (compatible for instance with OBJET, KOBJ = 5, 6 together with the useof MATRIX)while is set to zero."k"/|AIf ’ R½, it is equivalent toso that the new reference frame is at the positionfor IMAGE) of the three rays number I1, I2 and I3 specified as data, while"$% of the waist (calculated automatically in the same way asis set to zero.A"$"/¤ q