Difference between revisions of "Emittance Test"

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[[File:Calculate_from_the_Pipe_to_the_edge_of_the_Quad.jpg | 700 px]]
 
[[File:Calculate_from_the_Pipe_to_the_edge_of_the_Quad.jpg | 700 px]]
  
We need to make sure this distance is same when measure it horizontally, so that our quad is centered on the pipe.  
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We need to make sure this distance is same when measure it horizontally, so that our quad is centered on the pipe. I am going to use a ruler.
  
  

Revision as of 07:05, 23 July 2010

Design

Emittance Desien.png

New deisign: We changed to use just one magnet.


Emittance Desien new.png


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

Farady Cap For HRRL Positorns 1.jpg

Farady Cap For HRRL Positorns 2.jpg

Farady Cap For HRRL Positorns 3.jpg

Farady Cap For HRRL Positorns 4.jpg

Farady Cap For HRRL Positorns 5.jpg

Farady Cap For HRRL Positorns 6.jpg

Farady Cap For HRRL Positorns 7.jpg

Farady Cap For HRRL Positorns 8.jpg


Old Beam Line

HRRL Old BeamLine 1.jpg

HRRL Old BeamLine 2.jpg

HRRL Old BeamLine 3.jpg

HRRL Old BeamLine 4.jpg

HRRL Old BeamLine 5.jpg

HRRL Old BeamLine 6.jpg

Beam Line Parts

Beam Line Parts HRRL Positorns 1.jpg

Beam Line Parts HRRL Positorns 2.jpg

Beam Line Parts HRRL Positorns 3.jpg

Beam Line Parts HRRL Positorns 4.jpg

Beam Line Parts HRRL Positorns 5.jpg

Beam Line Parts HRRL Positorns 6.jpg

Beam Line Parts HRRL Positorns 7.jpg

Beam Line Parts HRRL Positorns 8.jpg


Beam Line Parts HRRL Positorns 9.jpg

Beam Line Parts HRRL Positorns 10.jpg

Beam Line Parts HRRL Positorns 11.jpg

Beam Line Parts HRRL Positorns 12.jpg


Constructed Beam Line for Emittance Test

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

Constructed Beam Line for Emittance Test 1.jpg


Constructed Beam Line for Emittance Test 2.jpg


Constructed Beam Line for Emittance Test 3.jpg



Leveling Survey

Downstream of the beam up by 2.6 mm.

Constructed Beam Line for Emittance Test Leveling Survey.jpg



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. How to Make Sure the Quad is Perpendicular to the Beam Line

If the distances between quads and end of cavity at any given points are equal, then quad and end of cavity are parallel. Pipe is perpendicular to the end of the cavity, thus, magnet would also be perpendicular to the pipe.

I will find at lest three random points quads and three corresponding points at the end of the cavity, make sure they are equal, then I can say, magnet is perpendicular to the beam line.

I am planning to stick a metal ruler two, so two faces are parallel.


C. 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.


Horizantal Centering

We know the diameter of the pipe [math] d_p [/math]. So, we can calculate from the pipe to the edge of the quad as:

Calculate from the Pipe to the edge of the Quad.jpg

We need to make sure this distance is same when measure it horizontally, so that our quad is centered on the pipe. I am going to use a ruler.



Go back Positrons