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Title: Momentum spectrometer for electron-electron coincidence studies on superconductors

Abstract

We present a new experimental setup to study electron-electron coincidences from superconducting surfaces. In our approach, electrons emitted from a surface are projected onto a time- and position-sensitive microchannel plate detector with delayline position readout. Electrons that are emitted within 2 {pi} solid angle with respect to the surface are detected in coincidence. The detector used is a hexagonal delayline detector with enhanced multiple hit capabilities. It is read out with a Flash analog-to-digital converter. The three-dimensional momentum vector is obtained for each electron. The intrinsic dead time of the detector has been greatly reduced by implementing a new algorithm for pulse analysis. The sample holder has been matched to fit the spectrometer while being capable of cooling down the sample to 4.5 K during the measurement and heating it up to 420 K for the cleaning procedure.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1];  [2];  [3];  [4]; ;  [5] more »; « less
  1. Institut fuer Kernphysik, Universitaet Frankfurt, Max-von-Laue-Str. 1, 60438 Frankfurt/Main (Germany)
  2. Max Planck Advanced Study Group, Center for Free Electron Laser Science (CFEL), Notkestrasse 85, 22607 Hamburg (Germany)
  3. Technion, Technion City, 32000 Haifa (Israel)
  4. University of Illinois at Chicago, 601 S. Morgan St., Chicago, Illinois 60607 (United States)
  5. Institut fuer Theoretische Physik, Universitaet Frankfurt, Max-von-Laue-Str. 1, 60438 Frankfurt/Main (Germany)
Publication Date:
OSTI Identifier:
22093790
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 83; Journal Issue: 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ALGORITHMS; ANALOG-TO-DIGITAL CONVERTERS; CLEANING; CONVERSION; DEAD TIME; ELECTRON SPECTROMETERS; MICROCHANNEL ELECTRON MULTIPLIERS; POSITION SENSITIVE DETECTORS; READOUT SYSTEMS; SAMPLE HOLDERS; SOLIDS; SUPERCONDUCTORS; TEMPERATURE RANGE 0000-0013 K

Citation Formats

Wallauer, Robert, Voss, Stefan, Bauer, Tobias, Schneider, Deborah, Titze, Jasmin, Ulrich, Birte, Kreidi, Katharina, Neumann, Nadine, Havermeier, Tilo, Schoeffler, Markus, Jahnke, Till, Czasch, Achim, Schmidt, Lothar, Schmidt-Boecking, Horst, Doerner, Reinhard, Foucar, Lutz, Max-Planck-Institut fuer medizinische Forschung, Jahnstrasse 29, 69120 Heidelberg, Kanigel, Amit, Campuzano, Juan Carlos, Jeschke, Harald, Valenti, Roser, and others, and. Momentum spectrometer for electron-electron coincidence studies on superconductors. United States: N. p., 2012. Web. doi:10.1063/1.4754470.
Wallauer, Robert, Voss, Stefan, Bauer, Tobias, Schneider, Deborah, Titze, Jasmin, Ulrich, Birte, Kreidi, Katharina, Neumann, Nadine, Havermeier, Tilo, Schoeffler, Markus, Jahnke, Till, Czasch, Achim, Schmidt, Lothar, Schmidt-Boecking, Horst, Doerner, Reinhard, Foucar, Lutz, Max-Planck-Institut fuer medizinische Forschung, Jahnstrasse 29, 69120 Heidelberg, Kanigel, Amit, Campuzano, Juan Carlos, Jeschke, Harald, Valenti, Roser, & others, and. Momentum spectrometer for electron-electron coincidence studies on superconductors. United States. https://doi.org/10.1063/1.4754470
Wallauer, Robert, Voss, Stefan, Bauer, Tobias, Schneider, Deborah, Titze, Jasmin, Ulrich, Birte, Kreidi, Katharina, Neumann, Nadine, Havermeier, Tilo, Schoeffler, Markus, Jahnke, Till, Czasch, Achim, Schmidt, Lothar, Schmidt-Boecking, Horst, Doerner, Reinhard, Foucar, Lutz, Max-Planck-Institut fuer medizinische Forschung, Jahnstrasse 29, 69120 Heidelberg, Kanigel, Amit, Campuzano, Juan Carlos, Jeschke, Harald, Valenti, Roser, and others, and. 2012. "Momentum spectrometer for electron-electron coincidence studies on superconductors". United States. https://doi.org/10.1063/1.4754470.
@article{osti_22093790,
title = {Momentum spectrometer for electron-electron coincidence studies on superconductors},
author = {Wallauer, Robert and Voss, Stefan and Bauer, Tobias and Schneider, Deborah and Titze, Jasmin and Ulrich, Birte and Kreidi, Katharina and Neumann, Nadine and Havermeier, Tilo and Schoeffler, Markus and Jahnke, Till and Czasch, Achim and Schmidt, Lothar and Schmidt-Boecking, Horst and Doerner, Reinhard and Foucar, Lutz and Max-Planck-Institut fuer medizinische Forschung, Jahnstrasse 29, 69120 Heidelberg and Kanigel, Amit and Campuzano, Juan Carlos and Jeschke, Harald and Valenti, Roser and others, and},
abstractNote = {We present a new experimental setup to study electron-electron coincidences from superconducting surfaces. In our approach, electrons emitted from a surface are projected onto a time- and position-sensitive microchannel plate detector with delayline position readout. Electrons that are emitted within 2 {pi} solid angle with respect to the surface are detected in coincidence. The detector used is a hexagonal delayline detector with enhanced multiple hit capabilities. It is read out with a Flash analog-to-digital converter. The three-dimensional momentum vector is obtained for each electron. The intrinsic dead time of the detector has been greatly reduced by implementing a new algorithm for pulse analysis. The sample holder has been matched to fit the spectrometer while being capable of cooling down the sample to 4.5 K during the measurement and heating it up to 420 K for the cleaning procedure.},
doi = {10.1063/1.4754470},
url = {https://www.osti.gov/biblio/22093790}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 83,
place = {United States},
year = {Mon Oct 15 00:00:00 EDT 2012},
month = {Mon Oct 15 00:00:00 EDT 2012}
}