Speaker
Mr
Jaya John John
(Department of Physics, University of Oxford)
Description
PImMS, or Pixel Imaging Mass Spectrometry, is a novel high-speed CMOS imaging sensor tailored to mass spectrometry requirements, also suitable for other dark-field applications. In its application to mass spectrometry, the sensor permits Time of Flight information to be combined with 2D imaging, gaining additional information about the initial position or velocity of ions under study. PImMS1, the first generation sensor in this family, has an array of 72 by 72 pixels on a 70µm by 70µm pitch. Pixels independently record digital timestamps when events over an adjustable threshold occur. Each pixel contains 4 memories to record timestamps at a resolution of better than 50ns. The sensor was designed and manufactured in the INMAPS 0.18µm process. This allows the inclusion of significant amounts of circuitry (over 600 transistors) within each pixel while maintaining good detection efficiency. We will present an overview of the pixel and sensor architecture, explain its functioning and present test results, ranging from characterisation of the analogue front end of the pixel, to verification of its digital functions, to images captured on mass spectrometers.
Preferred medium (Oral/poster)
Oral
Primary author
Mr
Jaya John John
(Department of Physics, University of Oxford)
Co-authors
Dr
Alex Johnsen
(Department of Chemistry, University of Oxford)
Dr
Andrei Nomerotski
(Department of Physics, University of Oxford)
Mr
Andy Clark
(Rutherford Appleton Laboratory)
Dr
Claire Vallance
(Department of Chemistry, University of Oxford)
Mr
Craig Slater
(Department of Chemistry, University of Oxford)
Mr
Edward Wilman
(Department of Chemistry, University of Oxford)
Mr
Ewen Campbell
(Department of Chemistry, University of Oxford)
Ms
Iris Friedli
(Department of Physics, University of Oxford)
Mr
Jamie Crooks
(Rutherford Appleton Laboratory)
Mr
Jason Lee
(Department of Chemistry, University of Oxford)
Ms
Laura Hill
(Department of Physics, University of Oxford)
Prof.
Mark Brouard
(Department of Chemistry, University of Oxford)
Dr
Renato Turchetta
(Rutherford Appleton Laboratory)
Mr
Weihao Yuen
(Department of Chemistry, University of Oxford)
