LVD, located in the hall A of the LNGS, is a neutrino observatory mainly designed to study low energy neutrinos from gravitational stellar collapses.

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Транксрипт:

LVD, located in the hall A of the LNGS, is a neutrino observatory mainly designed to study low energy neutrinos from gravitational stellar collapses. It is in operation since 1992, under different larger configurations. The final upgrade took place in 2001, when LVD became fully operational, with an active mass M=1000 t. LVD consists of an array of 840 scintillator counters arranged in a compact and modular geometry. 1m 1.5m

Two different discrimination channels 1.High energy threshold at HET =7 MeV for the external counters (43%), and at HET =4 MeV for internal ones (57%) better shielded from rock radioactivity 2.All counters are equipped with an additional discrimination channel,set at a lower threshold, LET =0.8 MeV which is active for 1 ms after HET pulse, for the detection 22м

Энергия γ-кванта, МэВ Количество γ-квантов на 100 ядер 214 Bi 0, , , ,2386 2,2045 1,3785 0,7695 1,4004 2,4452

Темп счета установки во время землетрясения в Италии (1997 г.). Стрелками отмечены моменты сейсмических толчков.

Rome 4.5 R Teramo 2.6 R

REUTER фотографии REUTER

В.Г. Рясного, ЛЭМДН фотографии В.Г. Рясного, ЛЭМДН

Карта подземных толчков

Магнитуда и глубина подземных толчков

Сравнение с магнитудами землетрясений

Кинематика плит на поверхности Земли согласно концепции новой глобальной тектоники в сопоставлении с данными о голоценовых движениях [ А.А. Никонов «Современные движения земной коры», М., Наука, 1979 ]