Assessment of the lifetime of the beam window of the MEGAPIE target liquid metal container - Archive ouverte HAL Access content directly
Journal Articles Journal of Nuclear Materials Year : 2006

Assessment of the lifetime of the beam window of the MEGAPIE target liquid metal container

(1) , (2) , , ,
1
2
Y. Dai
  • Function : Author
A. Almazzouzi
  • Function : Author
T. Auger
J-B. Vogt
  • Function : Author

Abstract

The lifetime of the beam window of the T91 liquid Pb-Bi container in the MEGAPIE target is discussed based on the present knowledge of LBE corrosion, embrittlement and radiation effects in relevant conditions. In the MEGAPIE target, since the high hydrogen production will likely reduce the oxygen content to a low level,LBE corrosion may reduce the thickness of the wall by 3-4 percent. This should not be a critical issue. However, the corrosion induced grain boundary penetration will promote LBE embrittlement on the T91 steel in the beam window. Evaluated from the DBTT shift data and fracture toughness values of T91 specimens tested in LBE, the lower bound of the lifetime of the T91 beam window is considered as the time when the steel becomes brittle at the lowest operation temperature, 230DC. Taking a 30percent margin, it gives a dose limit of about 6 dpa, corresponding to 2.4 Ah proton charge received by the target. Considering the function of the AlMg3 safety container, the upper bound of the lifetime of the T91 beam window would be when the DBTT reaches the maximum operation temperature, 340DC. It would be 12 dpa or 4.9 Ah.
Not file

Dates and versions

cea-02354117 , version 1 (07-11-2019)

Identifiers

  • HAL Id : cea-02354117 , version 1

Cite

Y. Dai, J. Henry, A. Almazzouzi, T. Auger, J-B. Vogt. Assessment of the lifetime of the beam window of the MEGAPIE target liquid metal container. Journal of Nuclear Materials, 2006, 356. ⟨cea-02354117⟩

Collections

CEA DEN
19 View
0 Download

Share

Gmail Facebook Twitter LinkedIn More