1 /*
2 * MultipleScatter.java
3 *
4 * Created on November 21, 2007, 1:12 PM
5 *
6 */
7
8 package org.lcsim.fit.helicaltrack;
9
10 /**
11 * Encapsulate multiple scattering errors in the r-phi and z coordinates.
12 * @author Richard Partridge
13 * @version 1.0
14 */
15 public class MultipleScatter {
16 private double _drphi;
17 private double _dz;
18
19 /**
20 * Creates a new instance of MultipleScatter to encapsulate
21 * multiple scattering errors in the r-phi and z coordinates.
22 * @param dz multiple scattering uncertainty in the z coordinate
23 * @param drphi multiple scattering uncertainty in the r*phi coordinate
24 */
25 public MultipleScatter(double drphi, double dz) {
26 _drphi = drphi;
27 _dz = dz;
28 }
29
30 /**
31 * Return the multiple scattering error in the r-phi coordinate
32 * @return r*phi coordinate multiple scattering error (units are mm)
33 */
34 public double drphi() {
35 return _drphi;
36 }
37
38 /**
39 * Return the multiple scattering error in z coordinate.
40 * @return z coordinate multiple scattering error (units are mm)
41 */
42 public double dz() {
43 return _dz;
44 }
45
46 @Override
47 public String toString() {
48 return "[drphi: "+_drphi+" , dz: "+_dz+"]";
49 }
50 }