Mitglied der Helmholtz-Gemeinschaft Workshop Introduction and Physics at COSY-ANKE June 2012 | Hans Ströher (Forschungszentrum Jülich, Germany) Workshop

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Workshop Introduction and

Physics at COSY-ANKE

June 2012 | Hans Ströher (Forschungszentrum Jülich, Germany)

Workshop on Existing and Future Projects between PNPI and FZJ

11. April 2023 Institut für Kernphysik (IKP) Folie 2

Preface – Workshop

PNPI and FZJ – strong partners foster mutual cooperations!

3rd Workshop (after 2001 and 2004); cooperations between PNPI and FZJ:

•Ongoing:

Hadron physics at COSY (ANKE) Polarized antiprotons (PAX) Technical developments: ABS, SC, LSP Polarized fusion (together with ITMO, St. Petersburg; …) Polarized molecules (together with Univ. of Cologne; …)

•Future:

Precision physics with COSY (TRIC, EDM, … FAIR)

Other fields: (i) neutron physics (ii) (nuclear) medicine (iii) energy research (iv) environmental research …


Delay of meeting to 2012

Preface – V.P. Koptev

V. Koptev suggested and planned this meeting:


ANKE News #202, January 13, 2012

Dear colleagues,

Most of you probably know already that our colleague and friend Vladimir P. Koptev died yesterday (January 12) on his way home from the Institute. This news comes as a terrible surprise and shock to all of us.

We have seen Vladimir coming to Juelich for many years, first to build ANKE together with Otto Schult (and others) and later to use it in experiments. He was highly respected within the collaboration because of his deep insight into both the detector and the science as well as for his wholehearted commitment to the projects. He was appreciated by all of us because of his wry sense of humour and his friendly character.

We realized that his health had degraded in more recent times, but we all had hopes that he would still be able to come back to Juelich once again in the Spring. We also had plans for a common workshop in Gatchina, which he now will miss. Our thoughts are with his family and his colleagues in Gatchina. We will certainly miss him a lot (…)

Hans Ströher and Andro Kacharava (on behalf of the ANKE collaboration)




O. Schult first met V. Koptev in Gatchina in 1989; he invited him to Jülich

V. Koptev started to visit Jülich in 1990:


Mostly, but not a complete one-way exchange

V. Koptev (and his group) joined the ANKE-collaboration


6th ANKE Workshop on Strangeness Production on Nucleons and Nuclei

Gatchina, 2004


A scientific success story for the next 21 years!

V. Koptev (and his group) joined the ANKE-collaboration


6th ANKE Workshop on Strangeness Production on Nucleons and Nuclei

Gatchina, 2004

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Physics at COSY-ANKEIn remembrance of

Vladimir Petrovich Koptev

Workshop on Existing and Future Projects between PNPI and FZJ

June 2012 | Hans Ströher (Forschungszentrum Jülich, Germany)


Hadrons (e.g., nucleon) are complex objects detailed studies required !

Hadron physics was then (no longer) at its infancy:

Introduction – Physics

Hadron Physics is the part of structure-of-matter physics

that deals with strongly interacting particles

at the level of quarks and gluons



Hadrons: complex phenomena from simple rules – how and why?

Strong QCD, i.e. non-perturbative regime of strong interaction Constituent quarks are strongly dressed by gluons Importance of dynamic chiral symmetry breaking (DSB)

( mass of the nucleon)

The challenge of QCD – How does Nature make hadrons ?


Scientific method – deeply rooted in V. Koptev´s ansatz for experiments

( experiment )


An empirical science – experiments rule !


E.g., COSY, the COoler SYnchrotron at Forschungszentrum Jülich

Introduction – New Expt´l Facilities


Characteristics of COSY

COSY is a cooler synchrotron and a storage ring

(Polarized) proton-,

deuteron-beams with

momenta < 3.7 GeV/c

Phase space cooling

(electron-, stochastic-)

Internal and external

experiments

Introduction – COSY


Introduction – Experiments at COSY

Experimental set-ups

Internal experiments inside the COSY ring (+ TOF(external))

WASA

ANKE

PAX

EDDA

COSY-11


Introduction – Physics at COSY

Experimental program

COSY is the hadron physics (spin) machine using hadronic probes

Nucleon-nucleon interactions

Deuteron breakup

Nucleon resonances

Meson production

Strangeness production (nucleons, nuclei)

Meson-nucleon/nucleus interaction

Symmetries and symmetry breaking

Polarization build-up

(…)


Introduction – Future Plans

Search for Electric Dipole Moments (EDM) at Storage Rings:

1st step: precursor exp´t, … 2nd step: injector for dedicated EDM-SR

JEDIJülich Electric Dipole Moment Investigations


ANKE – History

Early 90´s: a 2nd generation internal target experiment at COSY

0° Facility at TP2 in COSY


ANKE – History

Early 90´s: a 2nd generation internal target experiment at COSY

Facility moves to other side of COSY ring


From plans to realization:

ANKE, the Apparatus for Nucleon and Kaon Ejectiles

ANKE – History


ANKE – The 0° Spectrometer

Technical description of ANKE

Schematicdrawing


One important feature of ANKE: K+ identification („Koptev-method“)

K+ decay = 12.4 ns

Rangetelescope

ANKE – The 0° Spectrometer


ANKE – Physics Program

K+ production in pA-reactions

Part of an early letter (beginning of 90´s) of V. Koptev to O. Schult:


ANKE – Physics Program

K+ production in pA-reactions

COSY PAC # 11 (II/1995)

Proposal # 18: K+-Meson Spectroscopy with a 0°-Facility at TP2 in COSY

COSY PAC # 15 (II/1997)

Proposal # 18.1: ANKE: Study of Subthreshold K+ Production – First Measurements

COSY PAC # 17 (II/1998)

Proposal # 18.2: Measurement of Momentum Spectra of K+-Mesons from pC-Reactions at Tp = 1.0 GeV

COSY PAC # 19 (II/1999)

Proposal # 18.3: Subthreshold K+ Production-Measurements with Heavy Nuclei

(Spokespersons: K. Sistemich, V. Koptev)

First ANKE proposal:


ANKE – Targets (I)

Used for: inclusive K+ production on nuclear targets

Solid state (strip foil) targets:


ANKE – Results (I)

Koptev´s original motivation ANKE´s first physics paper (2001)


ANKE – Results (I)

Analysis of all available pA K+X data


ANKE – Results (II)

Importance of final-state interaction (Koptev´s ratio-method)

Repulsivein-medium

(K+A)-potential(~ 20 MeV)


ANKE – Results (III)

Further observations from proton-nucleus reactions

(K+d) correlations:two-step- and

cluster mechanism


ANKE – Targets (II)

Used, e.g., for: K+ production on protons and neutrons

Unpolarized hydrogen and deuterium targets:


ANKE – Results (IV)

Koptev-ideas for excited hyperons

Y0* (1480)

Line shape of (1405) via (00)-decay


ANKE – Results (V)

Use of (K++)-pairs: Koptev´s method for pp K++n


ANKE – Results (VI)

Charged kaon-pair production (in particular ) in pp- and pn collisions


ANKE – Results (VII)

A closer look at charged kaon-pairs

Coupledchannels

(cusp)


ANKE – Results (VIII)

(K+K0)-pairs

Scalarresonances


ANKE – Results (IX)

Further investigations: isospin symmetry; pentaquark

No (1530)indication !

Smallestcross section !


ANKE – Results (X)

Back to nuclear targets

In-medium -production („transparency ratio“)


ANKE – Results (XI)

pn K+ p - (via pd psp K+ p - )

Unfinished:

A clear signal of (1197)

is seen !


ANKE – Results (XII)

Examples of non-strangeness experiments

Not mentioned:


ANKE – Targets (III)

Current and future focus of ANKE program

Polarized hydrogen and deuterium targets:

Storage cellOperation principle


V.P. Koptev


As of today (July 2012), ANKE has

• published 72 scientific and 12 technical paper in refereed journals

V.P. Koptev

• is co-author of 40 of these;

• had 5 diploma-, 4 PhD students and 5 post-docs from Gatchina affiliated with ANKE, and he supervised a lot more in Jülich;

• has – to a large extend – shaped and led the ANKE (strangeness) physics program;

V.P. Koptev


V.P. Koptev (15.11.1939 – 12.1.2012)

We miss him and we will never forget him – his legacy lives on !

He was not only an eminent scientist, but also a strong character and – to many of us – a close friend !



Preface – Workshop

A tradition

Previous workshops in Gatchina:

•June 21/22, 2001 2nd ANKE Workshop on Strangeness Production in pp and and pA Interactions at ANKE

•July 8/9, 2004 6th ANKE Workshop onStrangeness Production on Nucleons andNuclei

•2009 Visit of a FZJ delegation (S. Schmidt et al.)to PNPI - …

Documents

Mitglied der Helmholtz-Gemeinschaft Workshop Introduction and Physics at COSY-ANKE June 2012 | Hans Ströher (Forschungszentrum Jülich, Germany) Workshop