nupecc meeting darmstadt, october 10th and 11th, 2009christoph scheidenberger (gsi and jlu)...

NuPECC Meeting Darmstadt, October 10th and 11th, 2009 Christoph Scheidenberger (GSI and JLU)

Activities at Justus-Liebig Universität Gießen for FAIRand

NUSTAR activities

Christoph Scheidenberger

and


Facts

founded AD 1607

~ 23.000 students (~10% foreigners)

> 300 professors

~ 1.700 scientific staff

11 faculties

Focus

Medicine, nutrition, chemistry, biology

Famous physicists at Gießen:

Conrad Röntgen (1879-1888)

Wilhelm Wien (1899-1900)

Walter Bothe (1929-1932)

Wilhelm Hanle (1941-1969)

Ewald, Münzenberg SHIP at GSI

Metag TAPS, HADES

GSIDarmstadt

State of Hessen

Frankfurt

JUSTU S-LIEBIG - UN IVER SITÄT G IESSEN

Gießen


Faculty for mathematics, physics, and geography

Physics branch:

I. Physikalisches Institut - Solid state and material physics

II. Physikalisches Institut - Nuclear and hadron physics

Institut für Angewandte Physik - Applied physics

Institut für Atom- und Molekülphysik - Atomic structure and collisions

Institut für Theoretische Physik - Hadron, heavy-ion, solid-state physics

Institut für Didaktik der Physik - Analysis of teaching and learning

• ~400 students• 14 professors• 36 scientific staff• Mechanical workshop• Detector laboratories• Electronic workshops


Atomic, nuclear and hadron-physics activities – overview

• Participation and involvement – HADES at GSI– CBMAMI (Mainz) and CBELSA/TAPS (Bonn)– HERMES at DESY– BES-III at IHEP (Beijing)– ATLAS experiment at CERN– FAIR: APPA, CBM, NUSTAR, PANDA

• Collaboration– I3HP2– EURONS– SFB "Subnuclear Structure of Matter" (Gießen, Bonn, Bochum)– Helmholtz Alliance "Physics at the Tera scale"

• International education– Graduiertenkolleg "Complex Systems of Hadrons and Nuclei" (Gießen-Kopenhagen-

Helsinki-Jväskylä-Turin, 2000-2009)– Euroschool on Exotic Beams


Present atomic physics activities in GießenIn-house facilities:

several small accelerators for crossed-beams studies of electron-impact ionization of ions

electron spectroscopy in atomic collisions

External facilities:

Installations at heavy-ion storage rings to study electron-ion collisionsTSR, MPI-K Heidelberg:

– precision collisional spectroscopy of ions

– recombination and ionization for astrophysical applications

ESR, GSI Darmstadt:

– resonance precision spectroscopy, QED and nuclear radii

Installations at synchrotron-radiation rings to study photon-ion interactionsALS, LBL Berkeley

PETRA-III, DESY Hamburg

– to study photoionization and photoexcitation of atomic, molecular and cluster ions

I M PA


Activities and involvement in FAIR – APPA

Physics goals:study of very highly-charged ions and QED effects at the borderline between atomic and nuclear physics, e.g.• resonance phenomena and precision spectroscopy • relativistic and QED effects, many-electron effects • atomic data for astro- and plasma physics

Developments:• electron and ion beam targets• electron spectrometers • detectors and DAQ techniques

DR probing nuclear chargeradii of exotic beams in the ESR

C. Brandau et al., PRL 100, 073201 (2008)

H. Bräuning, A. Müller, S. Schippers


Theory activities and involvement - I

• Study in-medium properties of hadrons embedded in dense and hot matter, as it is produced in collisions at CBM, hadronic attenuation in nuclear matter, hadron propagation

– Dilepton channels (HADES ->Super-HADES), hadronic bremsstrahlung– Drell-Yan processes, strangeness production (HYPHI -> PANDA)

• Essential for this program: Giessen BUU code (GiBUU), completely reconstructed, modern object-oriented programming (FORTRAN 1995,2003)

http://gibuu.physik.uni-giessen.de/GiBUU

Off-shell transport for heavy-ion, p+A, pbar+A, pi+A , +A, e+A, +A reactions using same theory and same code!

Baseline Test on cold nuclear matter with electrons, photons, neutrinos

• Explore transverse momentum structure of nucleon by Drell-Yan transverse-momentum spectra in p-pbar annhilitation at PANDA.

– Model higher twist (necessary for relatively low s at PANDA)– Determine NLO QCD corrections to transverse momentum distributions by considering short-

range correlations of partons.

S. Leupold, U. Mosel


Theory activities and involvement - II

• Strangeness enhancement • Multi-strange particle enhancement in A+A • Charm suppression• Collective flow (v1, v2)• Thermal dileptons• Jet quenching and angular correlations• High pT suppression of hadrons• Nonstatistical event by event fluctuations and correlations • Transport description of 1st order phase transitions•...

Signals of the phase transition:

Description of ultra-relativisticheavy-ion collisions

"Work horse" PHSD: Parton-Hadron-String DynamicsOff-shell transport theory

W. Cassing


Theory of exotic nuclear and hypernuclear systems

H. Lenske

• Density functional theory for nuclei, hypernuclei, neutron stars New modes (e.g. pygmy dipole resonances), dynamical correlations

• Reaction theory for exotic nuclei and hypernuclei

Continuum transfer 10LiRelativistic breakup 19C Strangeness production


Experiment activities for PANDA and detector developments

EM Calorimeter:• based on PbWO4 scintillator crystals• improved quality PWO-II (PANDA-R&D)

PbWO4

prototypes of PWO-II

R. Novotny


Performance tests with prototype

/ E

/ %

%69.0GeV/E

%78.1

E

(operated @T=-25oC)

after the approval of the Technical Design Report (Aug. 2008)production and delivery started (pre-financing by German and Swedish government)

7.400 crystals delivered and being quality controled at JLU Giessen

see arXiv:0810.1216v1 (October 2008)

R. Novotny, W. Kühn, V. Metag succ.

PROTO 60

E / MeV


Structure of the nucleon (HERMES, PANDA)

M. Düren

Physics goals:

Study Generalized Parton Distributions: „3-D Tomography of the nucleon“

• Pioneering experiments were done at HERMES

• Study universality of the concept at PANDA e.g.

• Apply GPDs at highest energies, e.g. diffractive Higgs production at LHC

Development:

• Novel Cherenkov detector design „DISC DIRC“

),( 0 pppp


Activities and involvement in FAIR – NUSTAR

Key instrument of the NUSTAR collaboration: Super-FRS

Developments:

- superconducting fragment separator

- first and higher-order ion-optical layout

- energy buncher and high-resolution spectrometer at R3B

- storage-ring complex (CR,RESR,NESR) H. Geissel, CSch.


Higher-order ion-optics of the Super-FRS

H. Weick, M. Winkler, H. Geissel


ILIMA – Isomers, Lifetimes, Masses – studied at the isochronous CR

ToF-det1ToF-det2

Exotic nuclei from Super-FRS

to RESR / NESR

28.4 m

Simulation of isochronicity in higher order

H. Weick, H. Geissel


ToF detector development for Isochronous Mass Spectrometry at CR

Isochronous Mass Spectr. Resolving power ~ 2·105

Accuracy 100 keV Duration ~ 50 s Sensitivity single ions

1 10 100 10000,1

1

10

100

num

ber

of d

ete

cted

ions

turn number

Ideal detector Expected Experimental Forward Detection efficiency

High rate limits detection efficiency

0 100 200 300 4000

1x107

2x107

3x107

MCPs with 10 m channel Diameter

x 6.0

x 3.4x 6.8x 4.3

Rat

e Li

mit

/ Hz

MCP Gap Voltage

x 1.7

MCPs with 5 m channel Diameter

Small pore size MCPs increase rate capability x 4

Development results:Initial study:

W. Plass


Novel approach for direct mass measurements of short-lived nuclei

Multiple-reflection time-of-flight mass spectrometer

W. Plass

nupecc meeting darmstadt, october 10th and 11th, 2009christoph scheidenberger (gsi and jlu)...

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