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Angela Chun Ying Kok

Senior Research Scientist

Angela Chun Ying Kok

Senior Research Scientist

Angela Chun Ying Kok
Phone: 982 45 162
Department: Microsystems and Nanotechnology
Office: Oslo

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1780193

Microdosimetry provides measurements of stochastic lineal energy deposition on a micrometric sensitive volume (SV), comparable to human cell dimensions. Conventional microdosimeter uses a tissue equivalent proportional counter (TEPC) that requires high voltage operation, are bulky and have poor spat...

Authors Kok Angela Povoli Marco Summanwar Anand Tran Linh T. Petasecca Marco Lerch Michael L.F. Rosenfeld Anatoly B.
Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1771979

Microdosimetry is a particularly powerful method to estimate the relative biological effectiveness (RBE) of any mixed radiation field. This is particularly convenient for therapeutic heavy ion therapy (HIT) beams, referring to ions larger than protons, where the RBE of the beam can vary significantl...

Authors Bolst David Gautelli Susanna Tran Linh T. Davis Jeremy Chartier Lachlan Prokopovich Dale A. Pogossov Alex Reinhard Mark I. Petasecca Marco Lerch Michael L.F. Matsufuji Naruhiro Povoli Marco Kok Angela Summanwar Anand Jackson Michael Rosenfeld Anatoly B.
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1771801

The response of a 5 μm thin silicon on insulator (SOI) 3D microdosimeter was investigated for single event upset applications by measuring the LET of different high LET ions. The charge collection characteristics of the device was performed using the Ion Beam Induced Charge collection (IBIC) techniq...

Authors James Benjamin Tran Linh T. Bolst David Perrachi Stefania Davis Jeremy Prokopovich Dale A. Guatelli Susanna Petasecca Marco Lerch Michael L.F. Povoli Marco Kok Angela Goethem Marc-Jan Nancarrow Mitchell Matsufuji Naruhiro Jackson Michael Rosenfeld Anatoly B.
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1771789

This article presents a study of the response of the silicon on insulator (SOI) microdosimeter with 3-D sensitive volumes (SVs) to 400 MeV/u 16 O and 500 MeV/u 56 Fe ions mimicking galactic cosmic rays outside and inside the International Space Station (ISS). An average quality factor ( $\bar {Q}$ )...

Authors Peracchi Stefania James Benjamin Tran Linh T. Bolst David Prokopovich Dale A. Davis Jeremy Guatelli Susanna Petasecca Marco Lerch Michael L.F. Matsufuji Naruhiro Kok Angela Povoli Marco Jackson M Rosenfeld Anatoly B.
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1771729

The relative biological effectiveness (RBE) of protons is highly variable and difficult to quantify. However, RBE is related to the local ionization density, which can be related to the physical measurable dose weighted linear energy transfer (LETD). The aim of this study was to validate the LETD ca...

Authors Wagenaar David Tran Linh T. Meijers Arturs Marmitt Gabriel Guterres Souris Kevin Bolst David Povoli Marco Kok Angela Traneus Erik Van Goethem Marc-Jan Langendijk Johannes A. Rosenfeld Anatoly B. Both Stefan
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1766901

Authors Pastuovic Zeljko Davis Jeremy Linh Tran Thuy Paino Jason R Dipuglia Andrew James Benjamin Povoli Marco Kok Angela Perevertaylo Vladimir I. Siegele Rainer Prokopovich Dale A. Lerch Michael Petasecca Marco Rosenfeld Anatoly Cohen David D
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1753827

Silicon radiation detectors with minimum dead area in the sensor periphery are desirable and sometimes necessary for many applications in nuclear medicine, high energy physics, and X–ray science. The dead area typically includes a guard ring structure that is required for facilitating a uniform elec...

Authors Koybasi Ozhan Zhang Jiaguo Kok Angela Summanwar Anand Povoli Marco Breivik Lars Bergamaschi Anna Schmitt Bernd
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1753808

In preparation for operation at the High Luminosity LHC, the tracking system of the ATLAS experiment is replaced with a new inner tracker, the ITk. The innermost layers of this system must be designed to withstand a fluence of more than 10^16 cm-2 1 MeV neutron equivalents. At SINTEF, Norway, silico...

Authors Dorholt Ole Heggelund Andreas Løkken Huiberts Simon Kok Angela Koybasi Ozhan Lauritzen Magne Eik Povoli Marco Read Alexander Lincoln Røhne Ole Myren Sandaker Heidi Stugu Bjarne Træet Are Sivertsen
Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1713711

The upcoming High Luminosity LHC (HL-LHC) puts stringent requirements on the tracking detectors situated closest to the interaction point in the planned Inner Tracker (ITk) of the ATLAS experiment. 3D pixel detectors have been proposed as a candidate for the innermost layers of the ITk since these d...

Authors Heggelund Andreas Løkken Stugu Bjarne Røhne Ole Myren Sandaker Heidi Read Alexander Lincoln Dorholt Ole Koybasi Ozhan Povoli Marco Kok Angela Lauritzen Magne Eik Summanwar Anand
Year 2019
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1713708

Detectors with high radiation tolerance and high time resolution are required for charged particle in high physics and space applications. 3D detectors were introduced by S. Parker 1 in the middle 90’ and they represented a starting point for evolved device able to work at fluency up to 2 × 10^...

Authors Mendicino Roberto Dalla Betta Gian-Franco Kok Angela Koybasi Ozhan Povoli Marco Summanwar Anand
Year 2019
Type Conference lecture and academic presentation