High energy charged particle optics computer programs

The computer programs TRANSPORT and TURTLE are described, with special emphasis on recent developments. TRANSPORT is a general matrix evalution and fitting program. First and second order transfer matrix elements, including those contributing to time-of-flight difference can be evaluated. Matrix elements of both orders can be fit, separately or simultaneously. Floor coordinates of the beam line may be calculated and included in any fits. Tables of results of misalignments, including effects of bilinear terms can be produced. Fringe fields and pole face rotation angles of bending magnets may be included and also adjusted automatically during the fitting process to produce rectangular magnets. A great variety of output options is available. TURTLE is a Monte Carlo program used to simulate beam line performance. It includes second order terms and aperture constraints. Replacable subroutines allow an unlimited variety of input beam distributions, scattering algorithms, variables which can be histogrammed, and aperture shapes. Histograms of beam loss can also be produced. Rectangular zero-gradient bending magnets with proper circular trajectories, sagitta offsets, pole face rotation angles, and aperture constraints can be included. The effect of multipole components of quadrupoles up to 40 pole can be evaluated. (orig.)