From the muography of underground structures in ancient to Cumae: A pilot project

Giulio Saracino Università di Napoli Federico II e Istuto Nazionale di Fisica Nucleare Summary o Principles of muon radiography o MURAVES: an applicaon to the Vesuvius study o Looking for hidden cavies in Mt Echia o Cumae as a pilot project: principles of X ray radiography X rays can cross the maer Greater is the density greater is the absorpon

A contrasve image is formed X ray detector Object to invesgate Source

X RAYS luggage Image of the content Limits of X ray radiography

X ray can cross up to few tens of cm of maer

But much more penetrang parcles exist in nature Muons (µ)

Elementary parcles 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 invesgate:

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 consumpon, transportability Muons

Cavity

Detector Tesng 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 Poncelli

Monte Echia Bagnoli Monte Echia Napoli

Lungomare Monte Echia

Castel dell’ Ovo T H E

H O 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 simulaons: only the test chamber

R Simulaon Real data compared to simulaon: 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 observaon Sll 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 ( VIII century B.C). tuff hill of 80 m a.s.l. rich of cavies and tunnels, some of them not yet discovered

military have used its strategic posion unl II word war II W.W. bunkers Cripta Romana 37 B.C.

Sibilla Tunnel pre-roman age.

Cocceio Tunnel 37 B.C. Simulaons in the Cocceio tunnel

We are looking for a second gallery used to support the construcon of the main. CONCLUSIONS o Muon radiography is a new and promising methodology o is rich of interesng 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