From the muography of underground structures in ancient Naples to Cumae: A pilot project
Giulio Saracino Università di Napoli Federico II e Is tuto Nazionale di Fisica Nucleare Summary o Principles of muon radiography o MURAVES: an applica on to the Vesuvius study o Looking for hidden cavi es in Mt Echia o Cumae as a pilot project: principles of X ray radiography X rays can cross the ma er Greater is the density greater is the absorp on
A contras ve image is formed X ray detector Object to inves gate Source
X RAYS luggage Image of the content Limits of X ray radiography
X ray can cross up to few tens of cm of ma er
But much more penetra ng par cles exist in nature Muons (µ)
Elementary par cles with electric charge
They exist in nature ( cosmic rays)
They can cross hundreds meters of rock p A cosmic shower
µ
200 muons/min Principles of muon radiography (muography) Source: cosmic muons
Measurement instrument: muon detector
what we can inves gate:
Volcanoes Hills and subsoil ( archaeology, geological survey ) Mines Buildings ( pyramids) Volcanoes:
Close to the horizon muons
Muons
Detector (not in scale) MURAVES MUon RAdiography of VESUVIUS "premiale project" MIUR INGV-INFN Dedicated detector: low electric power consump on, transportability Muons
Cavity
Detector Tes ng the muon radiography
METROPOLIS INTEGRATED AND SUSTAINABLE METHODS AND TECHNOLOGIES FOR RESILIENCE AND SAFETY IN URBAN SYSTEMS
PON 03PE_00093_4
High Technological District devoted to the sustainable buildings
Industrial partner The test laboratory : MONTE ECHIA
Centro storico Piazza del Plebiscito Vomero Piazza del Plebliscito Pon celli
Monte Echia Bagnoli Posillipo Monte Echia Napoli
Lungomare Monte Echia
Castel dell’ Ovo T H E
H O S T 12 m above sea level
35 m undeground
Palazzo di Serra di Cassano ancient cistern To find a known empty chamber above the detector
Chamber m a.s.l.
45 surface area
25 ceiling 20 floor 10 detector
Detector Sea level
10 m 25 m of tuff crossed
15 m 18 m
7 m
25 m 4 m
10 m
detector The R variable
Number of muons measured divided the number of muons expected
R ≅ 1 if no cavities are present
R > 1 in presence of cavities Expected signal from simula ons: only the test chamber
R Simula on Real data compared to simula on: only chamber
RED LINE: SIMULATION
Detector Other voids in the acceptance
126° aperture angle.
50 cm Detector Comparison with the other structures
Two signals not corresponding to any known structure A second site of observa on S ll measuring Mt Echia
y x
X = 436426.9967 Y = 4520607.6189 Z = 12.63 y x To know more
OPEN ACCESS Cumae Archaeological site
Cuma
First Greek colony in Italy ( VIII century B.C). tuff hill of 80 m a.s.l. rich of cavi es and tunnels, some of them not yet discovered
military have used its strategic posi on un l II word war II W.W. bunkers Cripta Romana 37 B.C.
Sibilla Tunnel pre-roman age.
Cocceio Tunnel 37 B.C. Simula ons in the Cocceio tunnel
We are looking for a second gallery used to support the construc on of the main. CONCLUSIONS o Muon radiography is a new and promising methodology o Campania is rich of interes ng sites o We have just started a project concerning CUMA • Università L. Vanvitelli ( Carlo Rescigno) • Università Federico II and INFN (F. Ambrosino, L. Cimmino, P. Noli, P. Strolin ) • Archaeological park of Campi Flegrei. • .... THE END