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Title: Time-resolved ion imaging at free-electron lasers using TimepixCam

Journal Article · · Journal of Synchrotron Radiation (Online)
 [1];  [2];  [3];  [4];  [4];  [4];  [5];  [6];  [3]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Princeton Univ., NJ (United States)
  2. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); European X-ray Free-Electron Laser (XFEL), Hamburg (Germany)
  3. Kansas State Univ., Manhattan, KS (United States). J. R. Macdonald Lab. Dept. of Physics
  4. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  5. CNRS Lab. of Physical Chemistry - Matter and Radiation (LCPMR), Paris (France)
  6. Brookhaven National Lab. (BNL), Upton, NY (United States)
+ Show Author Affiliations

In this paper, the application of a novel fast optical-imaging camera, TimepixCam, to molecular photoionization experiments using the velocity-map imaging technique at a free-electron laser is described. TimepixCam is a 256 × 256 pixel CMOS camera that is able to detect and time-stamp ion hits with 20 ns timing resolution, thus making it possible to record ion momentum images for all fragment ions simultaneously and avoiding the need to gate the detector on a single fragment. This allows the recording of significantly more data within a given amount of beam time and is particularly useful for pump–probe experiments, where drifts, for example, in the timing and pulse energy of the free-electron laser, severely limit the comparability of pump–probe scans for different fragments taken consecutively. Finally, in principle, this also allows ion–ion covariance or coincidence techniques to be applied to determine angular correlations between fragments.

Research Organization:
Kansas State Univ., Manhattan, KS (United States); Brookhaven National Lab. (BNL), Upton, NY (United States); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); BNL Laboratory Directed Research and Development (LDRD) Program; Helmholtz Association of German Research Centres
Grant/Contract Number:
SC0012704; FG02-86ER13491
OSTI ID:
1430839
Report Number(s):
BNL--203364-2018-JAAM
Journal Information:
Journal of Synchrotron Radiation (Online), Journal Name: Journal of Synchrotron Radiation (Online) Journal Issue: 2 Vol. 25; ISSN 1600-5775
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English

References (40)

TimepixCam: a fast optical imager with time-stamping journal March 2016
Timepix, a 65k programmable pixel readout chip for arrival time, energy and/or photon counting measurements
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journal October 2007
High photon flux table-top coherent extreme-ultraviolet source journal September 2014
Velocity map ion imaging applied to studies of molecular fragmentation with synchrotron radiation journal March 2007
Coincidence velocity map imaging using Tpx3Cam, a time stamping optical camera with 1.5 ns timing resolution journal November 2017
Detection systems for mass spectrometry imaging: A perspective on novel developments with a focus on active pixel detectors: Detection systems for MSI journal December 2012
FLASH—the first soft x-ray free electron laser (FEL) user facility journal September 2010
Three-dimensional imaging of carbonyl sulfide and ethyl iodide photodissociation using the pixel imaging mass spectrometry camera journal October 2015
A compact X-ray free-electron laser emitting in the sub-ångström region journal June 2012
Highly coherent and stable pulses from the FERMI seeded free-electron laser in the extreme ultraviolet journal September 2012
Multimass Velocity-Map Imaging with the Pixel Imaging Mass Spectrometry (PImMS) Sensor: An Ultra-Fast Event-Triggered Camera for Particle Imaging journal November 2012
Fast, High Resolution Mass Spectrometry Imaging Using a Medipix Pixelated Detector journal December 2010
Photon Beam Transport and Scientific Instruments at the European XFEL journal June 2017
Free-Electron Lasers: New Avenues in Molecular Physics and Photochemistry journal May 2012
Alignment, orientation, and Coulomb explosion of difluoroiodobenzene studied with the pixel imaging mass spectrometry (PImMS) camera journal July 2017
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Cold Target Recoil Ion Momentum Spectroscopy: a ‘momentum microscope’ to view atomic collision dynamics journal June 2000
Ion-ion coincidence imaging at high event rate using an in-vacuum pixel detector journal July 2017
Pixel Imaging Mass Spectrometry with fast and intelligent Pixel detectors journal July 2010
Jitter-correction for IR/UV-XUV pump-probe experiments at the FLASH free-electron laser journal April 2017
Large-format, high-speed, X-ray pnCCDs combined with electron and ion imaging spectrometers in a multipurpose chamber for experiments at 4th generation light sources
  • Strüder, Lothar; Epp, Sascha; Rolles, Daniel
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journal March 2010
A velocity map imaging spectrometer for electron–ion and ion–ion coincidence experiments with synchrotron radiation journal August 2007
Two-colour pump–probe experiments with a twin-pulse-seed extreme ultraviolet free-electron laser journal September 2013
Characterization of TimepixCam, a fast imager for the time-stamping of optical photons journal January 2017
Identification of absolute geometries of cis and trans molecular isomers by Coulomb Explosion Imaging journal December 2016
Development of experimental techniques for the characterization of ultrashort photon pulses of extreme ultraviolet free-electron lasers journal December 2014
A compact free-electron laser for generating coherent radiation in the extreme ultraviolet region journal July 2008
The FLASH pump–probe laser system: Setup, characterization and optical beamlines
  • Redlin, H.; Al-Shemmary, A.; Azima, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 635, Issue 1 https://doi.org/10.1016/j.nima.2010.09.159
journal April 2011
The generation, characterization and applications of broadband isolated attosecond pulses journal February 2014
Coulomb-explosion imaging of concurrent CH 2 BrI photodissociation dynamics journal October 2017
Charge transfer in dissociating iodomethane and fluoromethane molecules ionized by intense femtosecond X-ray pulses journal March 2016
PImMS, a fast event-triggered monolithic pixel detector with storage of multiple timestamps journal August 2012
Imaging charge transfer in iodomethane upon x-ray photoabsorption journal July 2014
Covariance imaging experiments using a pixel-imaging mass-spectrometry camera journal January 2014
First lasing and operation of an ångstrom-wavelength free-electron laser journal August 2010
Operation of a free-electron laser from the extreme ultraviolet to the water window journal June 2007
Recoil-ion and electron momentum spectroscopy: reaction-microscopes journal August 2003
The attosecond nonlinear optics of bright coherent X-ray generation journal November 2010
Velocity map imaging of ions and electrons using electrostatic lenses: Application in photoelectron and photofragment ion imaging of molecular oxygen journal September 1997
SPIDR: a read-out system for Medipix3 & Timepix3 journal December 2015

Cited By (5)

CAMP@FLASH: an end-station for imaging, electron- and ion-spectroscopy, and pump–probe experiments at the FLASH free-electron laser text January 2018
Excited state dynamics of CH 2 I 2 and CH 2 BrI studied with UV pump VUV probe photoelectron spectroscopy journal May 2019
CAMP@FLASH: an end-station for imaging, electron- and ion-spectroscopy, and pump–probe experiments at the FLASH free-electron laser text January 2018
New luminescence lifetime macro-imager based on a Tpx3Cam optical camera journal December 2019
CAMP@FLASH: an end-station for imaging, electron- and ion-spectroscopy, and pump–probe experiments at the FLASH free-electron laser journal August 2018

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Related Subjects

47 OTHER INSTRUMENTATION
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
time-stamping camera
velocity map imaging
VMI
free-electron laser
FEL
ultrafast laser
pump-probe experiments
mass spectrometry