EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH

Solenoid

label: SOLENOID, L=real, KS=real; (thick version)
label: SOLENOID, L=0, KS=real, KSI=real; (thin version)

A SOLENOID has two (three) real attributes:

• L: The length of the solenoid (default: 0 m)
• KS: The solenoid strength K_s (default: 0 rad/m). For positive KS and positive particle charge, the solenoid field points in the direction of increasing s.
• KSI: The solenoid integrated strength K_s*L (default: 0 rad). This additional attribute is needed only when using the thin solenoid, where L=0!
• KNL & KSL: Take note that one can specify multipole coefficients but they have no effect in MAD-X proper but are used for solenoids with multipoles in PTC.

Example:

SOLO: SOLENOID, L=2., KS=0.001;
THINSOLO: SOLENOID, L=0, KS=0.001, KSI=0.002;

The straight reference system for a solenoid is a cartesian coordinate system.