The design of the cylindrical collimators
 

Sample position at 187.5 metres from the beginning of the tube. That value corresponds to 7 metres after the second collimator. There the background has been estimated to be lower (or comparable) than the background produced by the samples placed in-beam.

(See gzipped pdf version of the document)

The evolution of the beam broadening can be observed in the following figures:

( pdf version of the figure)

( pdf version of the figure)

( pdf version of the figure)

 

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