title: Monte Carlo simulations of the photon calibration fields at the underground laboratory of PTB.
authors.affiliation: Nuclear Science Research Institute, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kowatari
authors.forename: H
authors.initials: H
authors.lastname: Dombrowski
authors.forename: S
authors.initials: S
authors.lastname: Neumaier