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DTSTAMP:20191126T142637Z
UID:DAD3752C-6133-4E26-ABC1-5F54446DBE76
DTSTART;TZID=Europe/Zurich:20191014T170000
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DESCRIPTION:Real-time lifetime tests to define the survivability to terrest
 rial cosmic rays of power devices require characterizing the local flux of
  cosmic neutrons\, which depends among others on the absorption by the loc
 al building and structural materials of the laboratory. Traditional neutro
 n spectrometers are voluminous and prone to mechanical shocks. Therefore\,
  they are not well-suited for this scope\, especially for mobile applicati
 ons. The proposed solution exploits the fact that the detection probabilit
 y of cosmic muons in the energy range of interest is four orders of magnit
 ude higher than for neutrons. For this scope\, an original spectrometer fo
 r cosmic muons has been designed and implemented\, which uses a solid-stat
 e semiconductor detector. Thanks to its ruggedness\, the reduced size and 
 the fact that it can be battery-powered\, the spectrometer can be employed
  both in stationary\, as well as in mobile tests (e.g. electric vehicles).
  According to the proposed procedure\, the muon flux measured outdoors is 
 compared with the flux measured indoors to extract the thickness of the sh
 ielding material. Finally\, the local flux of cosmic neutrons is inferred 
 from the thickness of the shielding material based either on tabulated cor
 relation functions\, or on Monte Carlo simulations. The paper presents an 
 application of the proposed technique as well\, as a detailed description 
 of the dedicated semiconductor spectrometer.\n\nSpeaker(s): Mauro Ciappa\,
  \n\nRoom: J.91\, Bldg: ETZ\, ETH Zurich\, Zurich\, Switzerland\, Switzerl
 and\, 8092
LOCATION:Room: J.91\, Bldg: ETZ\, ETH Zurich\, Zurich\, Switzerland\, Switz
 erland\, 8092
ORGANIZER:ciappa@iis.ee.ethz.ch
SEQUENCE:0
SUMMARY:On the use of cosmic muons to assess the local attenuation of terre
 strial cosmic neutrons in real-time SEB testing of power devices 
URL;VALUE=URI:https://events.vtools.ieee.org/m/212236
X-ALT-DESC:Description: <br /><p>Real-time lifetime tests to define the sur
 vivability to terrestrial cosmic rays of power devices require characteriz
 ing the local flux of cosmic neutrons\, which depends among others on the 
 absorption by the local building and structural materials of the laborator
 y. Traditional neutron spectrometers are voluminous and prone to mechanica
 l shocks. Therefore\, they are not well-suited for this scope\, especially
  for mobile applications. The proposed solution exploits the fact that the
  detection probability of cosmic muons in the energy range of interest is 
 four orders of magnitude higher than for neutrons. For this scope\, an ori
 ginal spectrometer for cosmic muons has been designed and implemented\, wh
 ich uses a solid-state semiconductor detector. Thanks to its ruggedness\, 
 the reduced size and the fact that it can be battery-powered\, the spectro
 meter can be employed both in stationary\, as well as in mobile tests (e.g
 . electric vehicles). According to the proposed procedure\, the muon flux 
 measured outdoors is compared with the flux measured indoors to extract th
 e thickness of the shielding material. Finally\, the local flux of cosmic 
 neutrons is inferred from the thickness of the shielding material based ei
 ther on tabulated correlation functions\, or on Monte Carlo simulations. T
 he paper presents an application of the proposed technique as well\, as a 
 detailed description of the dedicated semiconductor spectrometer.</p>
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