Münster 2017 – wissenschaftliches Programm
T 117.2: Vortrag
Donnerstag, 30. März 2017, 17:05–17:20, VSH 06
Printing high ohmic resistors for two-dimensional Floating Strip Micromegas Detectors — •Isabel Frank1, Otmar Biebel1, Bernhard Flierl1, Maximilian Herrmann1, Ralf Hertenberger1, Felix Klitzner1, Philipp Lösel1, Ralph Müller1, Chrysostomos Valderanis1, and André Zibell2 — 1LMU München, Germany — 2JMU Würzburg, Germany
Micromegas detectors are gaseous high-rate capable particle detectors with excellent spatial and temporal resolution. Single particle tracking is possible for particle fluxes up to 7 MHz/cm2. Different to the standard Micromegas design, floating strip Micromegas use anode strips which are on a floating electrical potential due to high ohmic contact to the HV supply. The charge signal is coupled to readout strips which are separated by a thin kapton layer from the floating anode strips. A two-dimensional floating strip Micromegas detector was built with an active area of 19.2 x 19.2 cm2 and adjustable drift region hight. The floating strips require individual high ohmic contact to high voltage. We present a method to connect reliably the floating strips individually to common high voltage using high atomic polymer resistive paste with a screen printing method. Results from characterizing measurements of the resistances and from tests of the detector using 5.9 keV photons from a 55Fe source are presented.