Emittance Test

Design

New deisign: We changed to use just one magnet.

HRRL had steer magnets on itself. We don't need external steer magnets. But Dr. Chouffani said that we might need them after quads, if the quads are not on axis. He will think about it.

File:Emittance Test Optim File.txt

File:HRRL Emittance.pdf

Faraday Cup

Old Beam Line

Beam Line Parts

Constructed Beam Line for Emittance Test

Vacuum pressure on the beam line is less than [math] 10^{-8} [/math] torr (on 2010-July-7th).

Leveling Survey

Downstream of the beam up by 2.6 mm.

How to do Leveling Survey and Alignment with Theodolite on e- Beam Line

A. Leveling Beam Pipe

1. Put the theodolite as high as the center of the beam line at upstream. Turn theodolite up and down. If the up angle is equal to down angle from the center of the pipe, theodolite is exactly as high as beam pipe. If not, adjust theodolite, until up and down angles are equal.

2. Once first step finished, then rotate theodolite horizontally to down stream. Turn it up and down, if up and down angles are not equal, adjust the stand till they are equal.

B. Centering the Quad Magnet with Theodolite

===Vertical Centering===
1. Finish the step 1 in A.

2. Then turn up the theodolite from the upper edge of the pipe to the magnet hole, call this angle upper angle.
 Do the same at lower part, call it lower angle. If the this two angles are not equal adjust the stand till they are equal. 
 

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