The LIBRA project at the Tandem Accelerator Laboratory of INP / NCSR “Demokritos”

The LIBRA projectat the Tandem Accelerator Laboratory

of INP / NCSR “Demokritos”

Center of Excellence in Low-energy Ion-Beam Research and Applications

S. V. Harissopulos, 69th NuPECC Meeting, Athens, Oct. 8-9, 2010



… a bit of history of INP

1987 : Establishment of INP in its current legal status (law 1514/87)

1973 : Tandem Accelerator delivers its first beam

1964 : First Greek refereed paper in Nuclear Physics



early eighties … the last nuclear structure expmts @ the Tandem of “Demokritos”





Crete, June 1988, NiC-0





39Y

20Ca

8O

Fe28Ni

pp chainCNO cycle

NeNa cycle

Si burning

MgAl cycle

s process

r process

powered by neutrons (n,) / -

s and r processes

100 yr 108 n/cm3 T=(0.1-0.4)×109 K

1 sec 1020 n/cm3 T =(1.8-3.3)×109 K

s process: (AGB stars, red giants...)

explosive nucleosynthesis !!

r process: ? (supernovae, neutron stars)

rp process

up to Sn-Te region

powered by protons (p,) / +

>104 g/cm3 T(1-3)×109 K

rp process

Novae, X-ray bursters …

-

+





S. Galanopoulos et al., Phys. Rev. C 67, 015801 (2003)



“seed” abundances (s process)

p-nuclei abundances (p process)

reaction network

HAUSER-FESHBACH THEORY Optical Model Potentials - Nuclear Level Densities - γ-Ray Strengths

(32≤Z≤83 , 36≤N≤131)

reactions/sec/cm3









A windowless gas target is absolutely necessary !!S3 spectrometer ??Active targets ???



X(5)

E(5)

shape phase transition

shape phase

transition

γ-soft nuclei

vibrators

rotators





… submitted 30 min. before deadline !!!

… scored excellent: 14.5/15

… in rank 7 out of more 250 proposals

Initial Budget : 1.426.310

Final Budget (after negotiations): 1.403.398

COOPERATION IDEAS (ERC)

PEOPLE (Marie Curie)

CAPACITIES

EURATOM Joint Research Centers

FP7 MAIN FUNDING PROGRAMMES

REGPOT



REGPOT SUPPORTS AN ACTION PLAN

COMPRISING:1. Exchange of know-how and experience with Knowgeable

Partner Organizations

2. Recruitment of (young) researchers

3. Acquisition, Development and/or Upgrading of research Equipment/Infrastructure

4. Organization of Workshops and Conferences

5. Dissemination and Promotional Activities



Concept - Objectives

CONCEPTOperation of a “Center of Excellence in Low-energy Ion-Beam Research and Applications”. The acronym LIBRA refers to the “balance” between fundamental research and applications the project seeks to achieve.

OBJECTIVESTo enhance further the research potential of the Tandem Accelerator Laboratory and its research group through the implementation of the coherent set of measures provided by the FP7/REGPOT programme. LIBRA targets three different research directions: 1. The study of stellar nucleosynthesis, with special emphasis on the so-called

p process.2. The experimental search for dynamical symmetries in nuclear structure, and3. The development and implementation of novel nuclear techniques in cultural

heritage studies, biomedicine research, environment monitoring and ion-beam micro-machining.



Work packages

WP1: Management – Coordination – Assessment

WP4: Exchange of

knowledge and expertise

WP3: Enhancement of

Research Tools and

Infrastructure

WP2:

Enhancement of Human

Potential

WP6: Dissemination and promotional activities

WP5: Organization of international scientific events

WP3 budget

≈ 700 000 €



Project Management Structure

International Project Advisory Committee (PAC)

(independent body of six highly esteemed European scientists)

LIBRA Project Coordinator

LIBRA Users Group

(Various national and European

Research Groups)

LIBRA Project Management Board

(the leaders of the six work packages)

Project Partner Institutions

(12 European Research Institutions and 1 from US)



LIBRA PARTNER INSTITUTIONS

SIBC, Univ. of Surrey

KVI, RuG Groningen

OCL, Univ. of Oslo

Univ. of Jyväskylä

GANIL, Caen

IAA, ULB Brussels

CEA/Irfu, Saclay CSNSM,

Orsay

AGLAE, C2RMF,

Paris

TU Berlin

PTB Berlin

Univ. Bochum

IKP/Uni. Köln

LABEC, Florence

– LIBRA – Tandem Lab, INP,

NCSR “Demokritos”

EAL, Ohio Univ., Athens, OH, USA

Kick-off meeting: March 11, 2009

Dissemination

Visiting the LIBRA facilities 2ND LIBRA Users meeting: Nov. 10, 2009

http://libra.inp.demokritos.gr





WP 3: Enhancement of Research Tools and Infrastructure

Task 3.1: Development and Acquisition of Novel Experimental Tools

Subtask 3.1.1 : Acquisition of a 4π γ-calorimeter

Subtask 3.1.2 : Development of an He-filled gas-target system for 4π γ-detector arrays

Subtask 3.1.3 : Development of a TPC based on the MICROMEGAS Technology

Subtask 3.1.4 : Installation and Operation of an array of 16 3He-filled counters at INP

Subtask 3.1.5 : Development – Construction of a plunger device for MINIBALL at ISOLDE/CERN

Subtask 3.1.6 : Upgrade of the DAQ system

Task 3.2: Upgrade of the TANDEM Accelerator components

Task 3.3: Installation of PAPAP

Task 3.4: Acquisition and Installation of a µ-beam system at the TANDEM accelerator



WP 3 / Task 3.4: Installation of a µ-beam system at the TANDEM accelerator

WP 3 / Task 3.3: The PAPAP accelerator (Petit Accélérateur Pour l’ AstroPhysique)

250 kV proton accelerator delivering • high-current proton beams (≈0.5 mA)• deuteron and α-beams possible

PAPAP arrived in “Demokritos” during last week of July 2009

A 0.5 mA d-beam and a d-filled gas cell could provide ≈109 n/cm2sec (En ≈ 3.5 MeV)with a Tritiated-solid target we could obtain≈1011 n/cm2sec (En≈14 MeV)





WP 3 / Task 3.2: Upgrade of Tandem components

Vacuum: All beam-legs/setups except from L60 (neutrons) will run with TURBO pumps. All VAC-ION pumps repaired and operational.

Power Supplies: New HEINZINGER / SPELLMAN PS with remote control units acquired for Ion-sources / Pre-acceleration / Einzel lenses / Steerers / Quadrupoles / Up-charging system NEW LOW-COST HIGHLY-EFFICIENT BELT FOUND !!!

SF6: Extra SF6 acquired, enough for an independent 2nd tank filling

Remote Control: Step-by-step testing of a LabView-based remote control ofmost Tandem units. Full operation – with documentation – by end of 2010. Tandem driving-license courses started in Oct. 2009.

New beam lines: Three additional beam lines are planned (R15 – L45 – 0 deg).Beam tubes – Triplets/Quadrupoles – Power Supplies exist

The DYNAMITRON HPGe-array





WP 3 / Subtask 3.1.1: The 4π γ-calorimeter NEOPTOLEMOS

@ DTL-Bochum

@ INP-Demokritos







WP 3 / Subtask 3.1.4: The array of 16 3He-filled counters

3He(n,p)3H Q=764 keV

16 3He-filled proportional counters

Length= 50 cm, Ø=2.5 cm

cs values from 0.8 to 8 MeV with an

overall accuracy of 4%. (previous:

≈30%)



WP 3 / Subtask 3.1.5: Development & Construction of a plunger for MINIBALL







LIBRA PEOPLE

WP2 Leader: Th. Geralis

WP3 Leader: A. G. Karydas

WP4 Leader: A. Lagoyannis

WP5 Leader: P.

Demetriou

WP6 Leader: G. Fanourakis

Coordinator: S. V.

Harissopulos

M. Andrianis S. F. AshleyM. Axiotis

V. Foteinou

R. Huszank

V. Kantarelou Th. Konstantinopoulos

Th. J. Mertzimekis

G. Provatas D. Sokaras



V. Paneta

The LIBRA project at the Tandem Accelerator Laboratory of INP / NCSR “Demokritos”

Documents

lowenergy ionbeam research

nupecc meeting

xray bursters center

ks process

protons p

ncm3 t

nuclear structure expmts

establishment of inp