The MYTHEN detector for X-ray powder diffraction experiments at the Swiss Light Source

Abstract

The MYTHEN single-photon-counting silicon microstrip detector has been developed at the Swiss Light Source for time-resolved powder diffraction experiments. An upgraded version of the detector has been installed at the SLS powder diffraction station allowing the acquisition of diffraction patterns over 120 in 2 in fractions of seconds. Thanks to the outstanding performance of the detector and to the calibration procedures developed, the quality of the data obtained is now comparable with that of traditional high-resolution point detectors in terms of FWHM resolution and peak profile shape, with the additional advantage of fast and simultaneous acquisition of the full diffraction pattern. MYTHEN is therefore optimal for time-resolved or dose-critical measurements. The characteristics of the MYTHEN detector together with the calibration procedures implemented for the optimization of the data are described in detail. The refinements of two known standard powders are discussed together with a remarkable application of MYTHEN to organic compounds in relation to the problem of radiation damage.

Understanding Inhomogeneous Reactions in Li‐Ion Batteries: Operando Synchrotron X‐Ray Diffraction on Two‐Layer Electrodes

“…The beam spot size was 0.5 × 0.5 mm. A MYTHEN (Microstrip sYstem for Time‐rEsolved experimeNts) detector system was used to collect the XRD patterns in the range of −60° to −5° and 5° to 60° in 2 θ 14. The detector system characteristics were summarized in Table 1 13, 14…”

A mechanistic view of lipid membrane disrupting effect of PAMAM dendrimers

“…Some measurements were performed at the synchrotron beamline B1 of the storage-ring DORIS III in HASYLAB/DESY, Hamburg, Germany [41][42][43]. SAXS patterns were recorded with a Pilatus 300k positionsensitive detector (Dectris Ltd, Switzerland) [44]. Later, SAXS was re-measured with a Pilatus 1M detector [45][46].…”

A von Hamos x-ray spectrometer based on a segmented-type diffraction crystal for single-shot x-ray emission spectroscopy and time-resolved resonant inelastic x-ray scattering studies

“…46) while the detector efficiency is at the level of 85%-90%. 47 According to Eq. (3), this leads to a spectrometer efficiency varying from about 21 × 10 −4…”

“…For x-ray detection, a MythenII striptype single-counting photon detector is employed. 47 The detector area consists of 1280 strips of 50 μm width and 8 mm height. The background events and low energy noise induced in the detector can be diminished by a low-energy discriminator set at a value of 5 keV.…”