Useful information on beam dimensions for MAD detector builders
Information provided here refers to the MAD in its 35 degree minimum angle configuration.
Last updated 4/4/02 -JJL
General overview:
Figure above shows the overall layout with >2000 random trajectories. Origin of the coordinate system is the center of the 2nd magnet.
This figure shows the x-envelope in the region of the detectors. Endplanes (ep's) are shown.
This figure is like the preceeding one except here the transverse (horizontal) envelope is shown. Endplanes are the same as in the previous picture.
|
ep 10 1.1 meters from exit of magnet |
Trajectory summary |
|||||||||
|
x0 |
q 0 |
y0 |
f 0 |
xf |
q f |
yf |
f f |
l |
d |
|
|
max. |
1.0E-04 |
2.0E-01 |
6.0E-02 |
3.6E-02 |
6.7E-01 |
1.3E-01 |
2.0E-01 |
1.9E-01 |
1.0E-01 |
1.5E-01 |
|
min. |
-1.0E-04 |
-2.1E-01 |
-6.0E-02 |
-3.6E-02 |
-9.5E-01 |
-2.6E-01 |
-2.1E-01 |
-2.0E-01 |
-2.8E-01 |
-1.5E-01 |
|
ep 11 |
Trajectory summary |
|||||||||
|
1 m. from ep 10 |
x0 |
q 0 |
y0 |
f 0 |
xf |
q f |
yf |
f f |
l |
d |
|
max. |
1.0E-04 |
2.0E-01 |
6.0E-02 |
3.6E-02 |
8.0E-01 |
1.3E-01 |
1.8E-01 |
1.9E-01 |
1.0E-01 |
1.5E-01 |
|
min. |
-1.0E-04 |
-2.1E-01 |
-6.0E-02 |
-3.6E-02 |
-1.2E+00 |
-2.6E-01 |
-2.1E-01 |
-2.0E-01 |
-3.0E-01 |
-1.5E-01 |
|
ep 12 |
Trajectory summary |
||||||||||
|
2 m from ep 10 |
x0 |
q 0 |
y0 |
f 0 |
xf |
q f |
yf |
f f |
l |
d |
|
|
max. |
1.0E-04 |
2.0E-01 |
6.0E-02 |
3.6E-02 |
9.3E-01 |
1.3E-01 |
3.7E-01 |
1.9E-01 |
1.1E-01 |
1.5E-01 |
|
|
min. |
-1.0E-04 |
-2.1E-01 |
-6.0E-02 |
-3.6E-02 |
-1.5E+00 |
-2.6E-01 |
-4.0E-01 |
-2.0E-01 |
-3.1E-01 |
-1.5E-01 |
|
|
ep 13 |
Trajectory summary |
|||||||||
|
4 m after ep 10 |
x0 |
q 0 |
y0 |
f 0 |
xf |
q f |
yf |
f f |
l |
d |
|
max. |
1.0E-04 |
2.0E-01 |
6.0E-02 |
3.6E-02 |
1.2E+00 |
1.3E-01 |
7.5E-01 |
1.9E-01 |
1.1E-01 |
1.5E-01 |
|
min. |
-1.0E-04 |
-2.1E-01 |
-6.0E-02 |
-3.6E-02 |
-2.0E+00 |
-2.6E-01 |
-7.9E-01 |
-2.0E-01 |
-3.5E-01 |
-1.5E-01 |
|
ep 14 |
Trajectory summary |
|||||||||
|
6 m after ep 10 |
x0 |
q 0 |
y0 |
f 0 |
xf |
q f |
yf |
f f |
l |
d |
|
max. |
1.0E-04 |
2.0E-01 |
6.0E-02 |
3.6E-02 |
1.4E+00 |
1.3E-01 |
1.1E+00 |
1.9E-01 |
1.1E-01 |
1.5E-01 |
|
min. |
-1.0E-04 |
-2.1E-01 |
-6.0E-02 |
-3.6E-02 |
-2.5E+00 |
-2.6E-01 |
-1.2E+00 |
-2.0E-01 |
-3.8E-01 |
-1.5E-01 |
|
ep 15 |
Trajectory summary |
|||||||||
|
8 m after ep 10 |
x0 |
q 0 |
y0 |
f 0 |
xf |
q f |
yf |
f f |
l |
d |
|
max. |
1.0E-04 |
2.0E-01 |
6.0E-02 |
3.6E-02 |
1.7E+00 |
1.3E-01 |
1.5E+00 |
1.9E-01 |
1.2E-01 |
1.5E-01 |
|
min. |
-1.0E-04 |
-2.1E-01 |
-6.0E-02 |
-3.6E-02 |
-3.0E+00 |
-2.6E-01 |
-1.6E+00 |
-2.0E-01 |
-4.1E-01 |
-1.5E-01 |
Please send comments or questions to John LeRose: lerose@jlab.org