First experimental feasibility study of VIPIC a custom-made detector for X-ray speckle measurements

First experimental feasibility study of VIPIC : a custom-made detector for X-ray speckle measurements

The Vertically Integrated Photon Imaging Chip (VIPIC) was custom-designed for X-ray photon correlation spectroscopy, an application in which occupancy per pixel is low but high time resolution is needed. VIPIC operates in a sparsified streaming mode in which each detected photon is immediately read...

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Bibliographische Detailangaben
Veröffentlicht in:Journal of synchrotron radiation. - 1994. - 23(2016), 2 vom: 01. März, Seite 404-9
1. Verfasser: Rumaiz, Abdul K (VerfasserIn)
Weitere Verfasser: Siddons, D Peter, Deptuch, Grzegorz, Maj, Piotr, Kuczewski, Anthony J, Carini, Gabriella A, Narayanan, Suresh, Dufresne, Eric M, Sandy, Alec, Bradford, Robert, Fluerasu, Andrei, Sutton, Mark
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Journal of synchrotron radiation
Schlagworte:Journal Article Research Support, U.S. Gov't, Non-P.H.S. VIPIC XPCS detectors
Beschreibung
Zusammenfassung:The Vertically Integrated Photon Imaging Chip (VIPIC) was custom-designed for X-ray photon correlation spectroscopy, an application in which occupancy per pixel is low but high time resolution is needed. VIPIC operates in a sparsified streaming mode in which each detected photon is immediately read out as a time- and position-stamped event. This event stream can be fed directly to an autocorrelation engine or accumulated to form a conventional image. The detector only delivers non-zero data (sparsified readout), greatly reducing the communications overhead typical of conventional frame-oriented detectors such as charge-coupled devices or conventional hybrid pixel detectors. This feature allows continuous acquisition of data with timescales from microseconds to hours. In this work VIPIC has been used to measure X-ray photon correlation spectroscopy data on polystyrene latex nano-colliodal suspensions in glycerol and on colloidal suspensions of silica spheres in water. Relaxation times of the nano-colloids have been measured for different temperatures. These results demonstrate that VIPIC can operate continuously in the microsecond time frame, while at the same time probing longer timescales
Beschreibung:Date Completed 24.06.2016
Date Revised 13.11.2018
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1600-5775
DOI:10.1107/S1600577516000114