Speaker
Ms
Luise Poley
(DESY)
Description
A major requirement for the construction of particle detectors is a low material budget, i.e. a small radiation length. Rough estimations of the radiaton length can be made using weight, material contributions and densities, but for more recent, e.g. new adhesives, PEEK and torlon, their radiation lengths are unknown.
One method to assess radiation lengths directly is to look at high energy particle tracks traversing a material: a material, placed inside a beam telescope, will cause scattering of particles traversing the material.
By reconstructing particle tracks and looking at the angular distributions of particle tracks behind a material, the material’s radiation length can be inferred.
The method has successfully been used to study different objects: homogeneous blocks of materials to measure material radiation lengths, a combined structure to compare the theoretical radiation length calculated from individual material contributions to the overall radiation length, structures with small feature sizes to investigate the resolution of the method.
This talk presents the basics of the method and reconstruction as well as recent results for measurements of different materials and combined structures.
Primary author
Ms
Luise Poley
(DESY)
