One-dimensional parallax-free position-sensitive detector for diffraction measurements based on a home-made thin THGEM
A large parallax-free gas diffraction meter based on a thinner-THGEM (thick gaseous electron multiplier) has been developed at the Beijing Synchrotron Radiation Facility (BSRF). A thinner-THGEM of thickness 200 µm is adopted, which can be shaped into a curve to eliminate parallax-error effects. The...
| Publié dans: | Journal of synchrotron radiation. - 1994. - 26(2019), Pt 1 vom: 01. Jan., Seite 83-88 |
|---|---|
| Auteur principal: | |
| Autres auteurs: | , , , , , , , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2019
|
| Accès à la collection: | Journal of synchrotron radiation |
| Sujets: | Journal Article BSRF X-ray diffraction micropattern gaseous detectors thinner-THGEM |
| Résumé: | A large parallax-free gas diffraction meter based on a thinner-THGEM (thick gaseous electron multiplier) has been developed at the Beijing Synchrotron Radiation Facility (BSRF). A thinner-THGEM of thickness 200 µm is adopted, which can be shaped into a curve to eliminate parallax-error effects. The detector is designed to have a 48° open angle positioned 20 cm from the powder samples. A front-end electronics board with 128 channels direct-current mode was adapted for the 8 keV BSRF beamline with 0.2 ns/100 ns stable duty cycle. Two powder samples, TiO2 and SnO2, were tested separately. The measured spectra with an angular resolution of 0.148 ± 0.081° are consistent with the data from the powder diffraction file. Combining the gas gain of the thinner-THGEM with the electronic circuit dynamic range, a very broad dynamic range of about 107 could be obtained |
|---|---|
| Description: | Date Completed 30.01.2019 Date Revised 30.01.2019 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1600-5775 |
| DOI: | 10.1107/S160057751801086X |