Physics with radioactive ion beams@R3B/FAIR: CALIFA a next generation calorimeter D. Cortina...

Physics with radioactive ion beams@R3B/FAIR: CALIFA a next generation calorimeter

D. Cortina Universidad de Santiago de Compostela

Plan Nacional Física de PartículasEvaluation Pannel. May 2009

J.A Vilán Universidad de Vigo

Layout

Project definition and relevance of the coordination Presentation of the research teams @USC and @UVi

Research activities in present facilities scientific background main results obtained within FPA2007-62681 working plans for next years

R&D on CALIFA calorimeter at R3B/FAIR scientific-tecnological background main results obtained within FPA2007-62681 working plans for next years

Budget summary


Project definition

The project is built around two axes:

Added value: collaboration between the GENP-USC and the CIMA-UVI group

nuclear physics + engineering expertise

-experimental nuclear physics programme at existing facilities (GSI, GANIL-SPIRAL) GENP-USC

-R&D activities to the R³B experiment: CALIFA (FAIR) GENP-USC and CIMA-UVi


The project coordinates the work of two groups:

This project is the continuation of a preliminar action : FPA 2007-62681

GENP-USC team

Senior scientists:

- Dolores Cortina Prof Titular de Universidad (90 ISI papers in last 10 years)- Ignacio Durán Catedrático Universidad (137 ISI papers in last 10 years)- Hector Alvarez Isidro Parga Pondal Researcher (40 ISI papers in last 10 years)

Postdocs:- Manuel Caamaño CPAN- Elisangela Benjamim

External Colaborators:- Klaus Suemmerer GSI Scientific Staff

PhD Students:

- Martín Gascón FPI- Carme Rodríguez FPU- Saúl Beceiro FPU - Paloma Díaz

Technical support:

- David González MICINN

TOTAL FTE: 9 USC 1 External

25 ISI papers related with FPA2007-62681


CIMA-UVi team

Senior scientists:

- Jose Antonio Vilán Prof Titular de Universidad - Marcos López Prof Titular de Universidad - Abraham Segade Ayudante Doctor- Angel Manuel Prof Titular de Universidad

TOTAL FTE: 3,5 UvI

Short Cv100 projects last 10 years15 patents last 10 years


Scientific background

implementation of 3-body NN interaction in ab-initio calculations importance of monopole interaction: modification of the effective interactions used in models Availability of exotic nuclei and novel experimental instruments

Understanding the structure of atomic nuclei and forces at play

… despite the progress there are still many open key questions limits of existence of the nuclei dependence of the nuclear force with the proton-to-neutron ratio creation and evolution of elements in the universe

Our research programme focussesin a few selected topics

Substantial progress over the last decade


Main results FPA2007-62681

M. Caamaño, USC PhD thesis, Sept 2006

M. Caamaño et al, Phys Rev. Lett. 99 (2007) 062502

M. Caamaño et al, Phys, Rev. C 78 (2008) 044001

D.Cortina, W. Mittig, submitted to Eur Phys. News 2009

Probing the nuclear force at the extreme of isospin: the 7H resonance

Experiment peformed at SPIRAL (France)

radioactive 8He beam produced by the ISOL method

innovative use of the active target concept

nuclear system with the highest N/Z ratio ever syntethised

7H is characterised as a narrow resonance state just above the multibody decay threshold

Highlight the importance of non-perturbative effects in the description of the nuclear force


ER 0.57 0.210.42

R 0.09 0.060.94

Geant 4

E

(MeV)

sexp

(mb)

bexp

(%)

0+ 0.0 38±13 31±10

2+ 1.77 51±10 44±7

2,3+,4+ ~4.1 28±9 24±7

FWHM 147±16 MeV/c 17C 16C

C. Rodríguez, USC PhD thesis, December 2009

C. Rodríguez et al, in preparation Phys Lett. B

D. Cortina , INPC, Tokio , June 2007

C. Rodríguez et al., EURORIB, Giens (France), June 2008

C. Rodríguez et al., Zakopane Conf. (Poland), Sept. 2008

D. Cortina, ENPC, Bochum March 2009

Evolution of the nuclear structure with the isospin

Experiment peformed at GSI (Germany)

radioactive beams produced by the fragmentation method

provide in a single experiment nuclear structure information of 38 different nuclei

use of the knockout reaction technique as a spectroscopic tool

Experimental access to spectroscopic factors



27P

26Si

26Al

26Mg

(p,)

+

+

S. Beceiro, USC PhD thesis, 2011

Study of reactions of astrophysical interest: Coulomb dissociation of 27P

Mapping of 26Al by detection of the 1.8 MeV -ray in satellites

Experiment peformed at GSI (Germany)radioactive beams produced by the fragmentation methoduse of an indirect method to study the reaction 26Si(p,)27P reaction in the rp- process relevant to the 26Al nucleosynthesis



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Ongoing experiments

Knockout reactions in C target of light n-rich nuclei around N=16-20 Experiment S245- GSI Personnel USC: C. Rodríguez, D. Cortina USC PhD October 2009 Publication of the results in ISI journals

Coulomb Dissociation of 27P Experiment S223- GSI Personnel USC: S. Beceiro, D. Cortina, K. Sümmerer (GSI) USC PhD 2011 Publication of the results in ISI journals

Study of neutron-rich isotopes around the island of inversion Experiment S306- GSI Personnel USC: P. Diaz, H. Alvárez, D. Cortina Use of Coulomb breakup as spectroscopic tool USC responsible of the data sorting (PhD)


USC’05USC’06

New experiments

n-rich nuclei from Z=3-10 studied in kinematically complete measurements

Experiment S393- GSI First experiment proposed as R3B collaboration

Personnel USC: Student, M. Caamaño, Postdoc, D.Cortina, H. Alvarez

(p,pn) evolution on neutron shells, and single-particle strength

(p,p) evolution of alpha clustering

(p,2p) population of unbound states, and single-particle strength

Extense physics programme combination of different targets

• measurement of relevant r-process nucleosynthesis using Coulomb Dissociation (n,)

• study of the evolution of shell structure close and beyond the dripline using

quasi-free knockout rections


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Future projects

Study of resonant elastic scattering with MAYA

Personnel USC: New student, M. Caamaño, E. Benjamim, D.Cortina

Experiment to be peformed at SPIRAL (France)

scarce variety of available beams : 26Ne

Study of the halo Nucleus 22N

Personnel USC: New student, D.Cortina, H. Alvarez, I.Durán, M. Caamaño,

E. Benjamim

Experiment to be peformed at ALADIN/LAND GSI (Germany)

This is one of the ideas proposed for a first experiment to be performed with the

CALIFA Barrel Demonstrator STRONG IMPLICATION OF THE GENP-USC TEAM

TEST OF THE REAL PERFORMANCES OF CALIFA Demonstrator


Facility for Anti-proton and Ion Reseach FAIRincluded in the ESFRI list

Gain Factors

•Primary beam intensity: Factor 100 – 1000

•Secondary beam intensities radioactive nuclei: up to factor 10,000

•Beam energy: Factor 15


~3000 scientists

14 countries

The R³B/FAIR experiment

Nuclear structure and dynamics

Reactions of astrophysycal interest

Nuclear structure far from stability

Reactions of astrophysical interest

Equation of state of asymmetric nuclear matter

Technical ProposalDecember 2005

IMoU 2008

~ 250 scientists40 Institutes

Reaction with Relativistic Radioactive Beams 700 MeV/nucleon


CALIFA design requirements

Total absorption efficiency 80% (up to E=15 MeV lab system)

Gamma sum energy (Esum) =<(Esum)>

Calorimeter for high energy

Light charged particles

Up to 300 MeV in lab system

Gamma energy resolution ~4-5% (FWHM at E=1 MeV)

Light charged particles resolution

~2%

A detector for in-flight light charged particles and emitted by relativistic sources

Huge dynamic range

50 keV - 20 MeV

p 1-300 MeV

Cal

ori

met

rer

Sp

ectr

om

eter

R3B Technical Report, 2005

CALorimeter for In Flight Analysis of an light charged particles


Scintillators provide large efficiencies but modest energy resolution at lowenergies.

CALIFA: design challenges

Kinematical considerations: particles emmitted by relativistic sources

To overcome the strong Doppler broadening, tracking or large segmentation is mandatory

Pushing the limits of enery resolution keeping the efficiency

performant scintillator materials and photosensors

granular detector: Thousands of finger-like crystals

R&D programme


Beam

~130~40

~20BARREL

FORWARD

ENDCUP

Next generation device based on new performant scintillators and photo-sensors

~5000 individual crystals (2.5 Tonnes of CsI(Tl))

CALIFA concept

http://www.usc.es/genp/r3b

Technical Status Report (December 2008)


USC’05USC’06

CALIFA: task distribution

R3B/CALIFA coordinator D. Cortina USC

USC, IEM, UVi (SPAIN), LUND,Chalmers (SWEDEN),TUM,TUD, GSI (GERMANY), POLAND, RUSSIA

- Crystal and photosensors BARREL USC,LUND I. Durán USC

- Crystal and photosensors FORWARD IEM, Chalmers, USC O. Tengblad IEM - Electronics TUD,IEM R. Gernhäuser TUD- Simulations USC, LUND, IEM H. Alvarez USC- Mechanical design Uvi,USC J.A. Vilán UVI -H.Alvarez USC- Slow control TUD K.Sonnabend TUD- DAQ GSI (Common task within R³B)

TSR (end 2008)

IMoU 2008

BARREL FORWARDPlan Nacional Física de PartículasEvaluation Pannel. May 2009

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CALIFA BARREL: CsI(Tl)+APD the state of art

13 cm

Matching of scintillators and photosensors CsI(Tl) + APD

137Cs source (662 keV)

This solution fulfill thedesign parameters forthe CALIFA Barrel

Record value!


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CALIFA BARREL: Crystals

CsI(Tl) crystal characterization

Minimize the effect of light output non-uniformity

Lapping corrections

Maximize the light collection Wrapping (VM2000(ESR) from 3M, optimum reflector)

look for the best CsI(Tl) producers specify quality parameters for large scale production

On top of an excellent intrinsic energy resolution, it is important to

Very different crystal quality even for the same producer


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Hamamatsu is the leader company. Very positive initial contacts with the CNM (CSIC/ IMB-CNM)

CALIFA BARREL: Photosensors

Avalanche Photo Diode (APD) characterization

Comparative study of different APD Determination of working conditions Protocole to characterize APD


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CALIFA BARREL: Prototyping

ProtoZero construction and test

15 ch CsI(Tl) + APD+ FEE

Tests detector response - CMAM April 2009 - TSL May 2009 - TUD July 2009

Validation of reconstruction software

19F(p,)16O

6.2 MeV

M. Gascón, USC PhD, 2010M. Gascón et al., IEEE waiting for publication 2009M. Gascón et al., IEEE Trans. Nuc. Sci. 58 (2008)1259


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CALIFA: Simulation

Included in the framework of R³B- simulation coordinated by H. Alvarez

Complete response of CALIFA - physics interactions - geometrical effects - interaction with matter

Detailed response of ProtoZero

Development of analysis software

Production, transport and collection of light optimize the crystal design


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Working Plan for next years

Crystal and APD test Personnel USC: I. Durán, M. Gascón, D. Gonzalez, Postdoc complete CsI(Tl) investigation end 2009 explore a “finger-like” solution for the forward endcap 2011

Simulation tools Personnel USC: H.Alvarez, D. Cortina, M. Caamaño, E. Benjamim, Postdoc complete response of the detector based in G4+ROOT end 2010-2011 explore crystal “light- guide” shape 2010

Construction of a forward prototype Personnel USC: I. Durán, M. Gascón, D. Gonzalez, Postdoc, Technician similar procedure as used for the BARREL 2010-2011

Beam tests with prototype Personnel USC: D. Cortina, H. Alvarez, I. Durán, E. Benjamim, M. Gascón, Postdoc, Technician similar procedure as used for the BARREL 2010-2011


CALIFA design evolution (2005-2009)

BASIC NUMBERS

Crystal volume 40 to 150 cm3

Inner base area 2 to 8 cm2

Crystal lengh 10 to 22 cm

Crystals in BARREL ~ 3700

Crystals in ENDCAP ~ 950

weight (with CsI(Tl)) ~ 2500 kg

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USC-IPNO

06-07’

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USC-UVi 2008

H. Alvarez-Pol et al., Nucl. Inst. & Meth. B 266 (2008) 1259Plan Nacional Física de PartículasEvaluation Pannel. May 2009

CALIFA BARREL DEMONSTRATOR

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Proposal of CALIFA demonstrator ( CALIFA BD1)

DEMONSTRATOR (Max 20% of detector) R3B iMoU (2008)

TEST OF DETECTOR PERFORMANCE AND PHYSICS PROGRAM

BARREL

~ 1000 crystals (35-60 degrees)USC proposed contribution 300 k€

• CsI(Tl) + APD

• conceptual design

• participate in the assembly and commissioning phase

• develop an experimental programm

UVi proposed contribution 99 K€

• engineering design

• construction of the mechanical structure


CALIFA from conceptual to engineering design (2009)

V 6.1 USC-UVi

BARREL : Alveoli with four symmetrical crystals.

Total of 912 alveoli, with 6 different alveolar geometries.

Total of crystals 3648 with only 7 different crystal types.

FORWARD ENDCAP :Alveoli filled with three different crystals.

Total of 317 alveoli, with 4 different alveolar geometries.

Total of 951 crystals with only 12 different types.

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CALIFA engineering design

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Fields of research Extremely complex and non-linear FEM for anisotropic materials (i.e: carbon fiber with epoxy) Prototyping by Laser Rapid prototype methode Develope prototypes using final materials ( CFR, KRFR) Real tests using SFF and FBF techniques Investigate new systems and materials for the mechanical support Looking for and adequate cooling system


CALIFA DEMONSTRATOR

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USC’06 Goals Get real data of the mechanical, thermics, physics and accessibility capabilities of the detector. Identify with great detail mechanical difficulties that could came up at the real construction and assembly stage. Innitiate technical contacts with manufacture companies that could assume the construction responsibility. Improve and create new systems able to provide better measurements. Validate the FEM analysis used for the final detector design.


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Working Plan for next years

General design studies Personnel USC: H. Alvarez, I. Durán Personnel UVi: J. A. Vilán, M. López, Student Detailed design of barrel part 2009 Design of the forward encup 2012

Mechanical structure Personnel UVi: J. A. Vilán, M. López, A. Segade Implementation and validation of the mechanical structure 2010 Definition of the functional mechanics 2010 NURBS modeling 2010-2011 Determination of FRP 2010 Manufacture of physical prototypes and testing 2011-2012

Participation in the demonstrator construction Personnel USC: H. Alvarez, I. Durán, M. Caamaño, D. Cortina, D. González + Technician, Personnel UVi: J. A. Vilán, A.F. Vilán, A. Segade, Student Definition and design of the demostrator 2010 Design of the mechanical structure 2010 Purchasing components 2011 Participation in the assembly and commisioning 2011-2012


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Budget Summary

Additional personnel request :

FPI Student + Technical support

Personnel (1PhD, 1 PostDoc) 195 k€

Travel (4 Doctors , 4 Students) 100 k€

Equipment 33 k€

Travel (4 Doctors , 4 Students) 68 k€

Equipment 161 k€

Beam times 10 k€

Participation Demonstrator 315 k€

USC Present facilities PROGRAMME

UVi R&D PROGRAMME


USC R&D PROGRAMME

Personnel 50 k€

Equipment 10 k€

Travel 5 k€

Participation Demonstrator 70 k€ (99 K€*)

* Including part of personnel

Additional personnel request :

FPI Student + Technical support

Physics with radioactive ion beams@R3B/FAIR: CALIFA a next generation calorimeter D. Cortina...

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