Hamburg 2016 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 8: Myondetektoren I
T 8.4: Vortrag
Montag, 29. Februar 2016, 11:45–12:00, VMP6 HS E
Improvement of surface planarity measurements by temperature correction and structural simulations — •Maximilian Herrmann1, Otmar Biebel1, Jonathan Bortfeldt1, Bernhard Flierl1, Ralf Hertenberger1, Philipp Loesel1, Ralph Mueller1, and Andre Zibell2 — 1LMU München — 2JMU Würzburg
Novel micro pattern gaseous detectors, like Micromegas, for particle physics experiments require precise flat active layers of 2-3 m2 in size. A construction procedure developed at LMU for 2 m2 sized Micromegas achieves surface planarities with a RMS below 30 µm. The measurements were performed using a laser distance sensor attached to a coordinate measurement machine.
Studies were made to investigate the influence of temperature variations on these measurements. The temperature is monitored by several sensors. We present results containing corrections of the measurements in respect to temperature changes.
In addition simulations with the FEM program ANSYS are compared to measured detector panel deformations introduced by forces, in order to study their effect on the surface planarity.