# TUBE88 — A code which computes magnetic field lines

## Description

Abstract TUBE88 computes magnetic field lines in cylindrical or toroidal geometry (using cylindrical coordinates (r, φ, z)) and calculates the intersections of those field lines with specified planes. It is an outgrowth of a code first written in 1967. A fourth-order predictor-corrector method is used to integrate the field line coordinates. The magnetic field may be computed in several ways: (a) through specification of currents flowing in very specific helical and circular elements together with a “... Title of program: TUBE88 Catalogue Id: ABHJ_v1_0 Nature of problem TUBE88 computes magnetic field lines in cylindrical or toroidal geometry and calculates the intersections of those field lines with specified planes. A cylindrical coordinate system (r,phi,z) is used. Versions of this program held in the CPC repository in Mendeley Data ABHJ_v1_0; TUBE88; 10.1016/0010-4655(89)90044-1 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)