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

Journal Article · Wed Feb 10 00:00:00 EST 2016 · Journal of Synchrotron Radiation (Online)

DOI:https://doi.org/10.1107/S1600577516000114· OSTI ID:1256705

Rumaiz, Abdul K. ^[1]; Siddons, D. Peter ^[1]; Deptuch, Grzegorz ^[2]; Maj, Piotr ^[3]; Kuczewski, Anthony J. ^[1]; Carini, Gabriella A. ^[4]; Narayanan, Suresh ^[5]; Dufresne, Eric M. ^[5]; Sandy, Alec ^[5]; Bradford, Robert ^[5]; Fluerasu, Andrei ^[1]; Sutton, Mark ^[6]

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1. Brookhaven National Lab. (BNL), Upton, NY (United States)
2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
3. AGH Univ. of Science and Technology, Krakow (Poland). Dept. of Metrology and Electronics
4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
5. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), X-ray Science Division
6. McGill Univ., Montreal, QC (Canada). Dept of Physics

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 allowscontinuousacquisition 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 operatecontinuouslyin the microsecond time frame, while at the same time probing longer timescales.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: AC02-76SF00515; AC02-06CH11357; SC0012704; SC00112704
• OSTI ID: 1256705
• Alternate ID(s): OSTI ID: 1331594; OSTI ID: 1354368
• Report Number(s): BNL-112884-2016-JA; JSYRES; PII: S1600577516000114
• Journal Information: Journal of Synchrotron Radiation (Online), Vol. 23, Issue 2; ISSN 1600-5775
• Publisher: International Union of Crystallography
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
VIPIC
XPCS
detectors