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- Definition of U and V planes in MOFIA geometry files
Definition of U and V planes in MOFIA geometry files
Author: K.Olchanski
Date: 26 Nov 2001
The planes are labeled according to the coordinate they measure: "X-planes" measure X, "Y-planes" measure Y, "U-planes" measure U and "V-planes" measure V.
In the MOFIA geometry file, the U and V planes are made out of X-planes by rotating them around the Z-axis, as shown in this figure (note the location of wire 1):
Table 1. Rotation angles used in TWIST geometry files
| Angle | Plane type |
|---|---|
| +45 | upstream PC and DC U planes |
| -45 | upstream PC and DC V planes |
| -135 | downstream PC, DC and target PC U planes |
| +135 | downstream PC, DC and target PC V planes |