CEA DSM Dapnia - L. Moscoso - KM3NeT23/06/2005 1 KM3NeT L. Moscoso DAPNIA/SPP CEA/Saclay

- L. Moscoso - KM3NeT CEA DSM Dapnia23/06/2005 1

KM3NeT

L. Moscoso

DAPNIA/SPP

CEA/Saclay


Detection principle

Huge detection volume: km3

Shielded against cosmic rays

p

c=43°


Scientific topics

Cosmology/ particle physics–Dark matter

Astronomy–Quasars–Gamma-ray bursts –Microquasars–Pulsars–SNR

The Mediterranean is well suited to observe the Galactic Centre.

Results from H.E.S.S. are encouraging.


HESS observations - Energy spectrum

dF/dE = F0 E- with = 2.2 F0 = 1.1×10-4 m-2 s-1 GeV-1

Km3 detector sensitive to a neutrino flux = gamma-ray flux

Aharonian et al., A&A 425, L13-L17 (2004)

Neutrinos from the GC


HESS scan of the Galactic centre


Possible combined observations

•Neutrinos from galactic centre detectable in KM3NeT in a few weeks to years (Crocker, Melia, Volkas, Astrophys. J. 622 (2005) L37-40);

•Other HESS observations like RX J1713.7-3946 and PSR B1509- 58 in the GC proximity are promising;

•Integral and Swift are flying. Swift has reported 42 GRB in 6 months. Hopefully new space detectors in 2010-2020


Nemo Phase 1

Shore station

2.5 km e.o. Cable with double steel shield

21 km e.o. Cable with single steel shield

J BUJ

J

5 km e.o. cable

Geoseismic station SN-1 (INGV)

5 km e.o. cable

10 optical fibres standard ITU- T G-652 6 electrical conductors 4 mm2


Nestor prototype resultsNestor prototype results

Recently published:

G. Aggouras et al. Astropart. Phys.

23 (2005) 377

Zenith angle distribution


Antares: MILOM & Line 0

MILOM

Final version of the electronics

Line 0 – Cable test

Almost a complete line (23 storeys)

No electronics

Study optical fibre transmission

Autonomous recording devices (Tinytags) and measurements from the shore (master electro-optical and interlink cables)

No water leaks in electronics containers

Successful deployment-recovery-check-deployment-connection-recovery

Good and constant conductivity and insulation

Optical transmission losses at a number of locations (in the containers)


Antares: The Junction Box

JB stable since 30 months.


Antares MILOM: Timing resolution

0.75ns for one PMT 0.75/2

0.5ns

Will allow a 0.2° pointing resolution


Antares-MILOM: ARS responses

Charge distribution (baseline subtracted)

Single photo-electron peak

Single pe signal wave-form

640MHz sampling

Main clock


KM3NeT Design Study Participants

• Cyprus: Univ. Cyprus

• France: CEA/Saclay, CNRS/IN2P3 (CPP Marseille, IreS Strasbourg), IFREMER

• Germany: Univ. Erlangen, Univ. Kiel

• Greece: HCMR, Hellenic Open Univ., NCSR Democritos, NOA/Nestor, Univ. Athens

• Italy: CNR/ISMAR, INFN (Univs. Bari, Bologna, Catania, Genova, Messina, Pisa, Roma-1, LNS Catania, LNF Frascati), INGV, Tecnomare SpA

• Netherlands: NIKHEF/FOM

• Spain: IFIC/CSIC Valencia, Univ. Valencia, UP Valencia

• UK: Univ. Aberdeen, Univ. Leeds, Univ. Liverpool, John Moores Univ. Liverpool, Univ. Sheffield

Particle/Astroparticle institutes (17)

Sea science/technology institutes (7)

Coordinator


KM3NeT Design Study: Resources

• Suggested overall budget of the Design Study: 24 M€ (mainly personnel, but also equipment, consumables, travel etc.).

• Amount requested from EU: 10 M€;

• Estimated overall labor power: ~3500 FTEMs(FTEM = full-time equivalent person month) → 100 persons working full-time over 3 years!

Substantial resources (labor power) additional to those available in the current

pilot projects will be required !


The KM3NeT Design Study: Milestones

•Proposal submission 04.03.2004.•Evaluation report received June 2004 (overall mark: 88%).•Unofficial but reliable message (Sept. 2004):

The KM3NeT Design Study will be funded ! •Currently waiting for EU call to negotiation.

Negotiations expected between summer and end 2005•KM3NeT in the ESFRI “List of opportunities”•Strong support is asked to the funding agencies


KM3NeT Consortium

Organizational structure (phase 1):

– Negotiation Preparation Group (NPG).Task: preparation of the consortium agreement

– Major legislative body: General Assembly;One representative per institute;Simple set of rules for phase 1 worked out by NPG.Task: Approval of all documents, commitments, ...

– Coordinator: U. Katz confirmed. In permanent contact with Brussels.

– WP responsibles: named by “Leading Institutes”Task: establish communication between WP partners,collect info., contact persons for NPG, WP summaries


Working packages

Task Descriptive title Leading participant

WP1 Management of the Design Study Univ-Erlangen (D)

WP2 Astro-particle physics IN2P3 (F)

WP3 Physics analysis Hellenic Open Univ. (Gr)

WP4 System and product engineering Saclay (F)

WP5 Information technology FOM (NL)

WP6 Shore and deep-sea infrastructure INFN (I)

WP7 Sea surface infrastructure National Observatory of Athens/Nestor (Gr)

WP8 Risk assessment and QA INFN (I)

WP9 Resource exploration NCSR Democritos (Gr)

WP10 Associated science Univ-Aberdeen (UK)


24/25 Feb. 2005: First meeting of NPG;

1 March 2005: Nomination of all WP coordinators approval by GA;

14-15 June 2005: Second meeting of NPG;

End June 2005: Guideline for WP coordinators;

5 Sept. 2005: First common meeting of NPG and WP coordinators;

(few pages, detailing plans, resources, ...);

8-11 Nov. 2005: Second VLVT workshop, Catania.

Time line


Conclusions (1)

•HE neutrino observation is essential to achieve multi-

messenger and multi-wavelength astronomy;

•An equipped volume of at least one km3 is necessary;

•The Mediterranean Sea allows us to observe the

Galactic Centre;

•FP6 Design Study will combine the efforts of the three

pilot projects Antares, Nemo, Nestor;


Conclusions (2)

The balance of these last few months is very positive:– Scientific point of view

• The recent HESS observations in the TeV range are very encouraging;

– Political point of view• ESFRI adds KM3NeT to “List of opportunities”;• The funding agencies show their intention to

reinforce their support to the pilot projects;• New institutes (not present in the 3 pilot

projects) have joined KM3NeT;– Technical point of view

• The recent results with the new Antares prototypes are an important progress.

Documents

CEA DSM Dapnia - L. Moscoso - KM3NeT23/06/2005 1 KM3NeT L. Moscoso DAPNIA/SPP CEA/Saclay