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Status of Spin Physics and Experiments

Status of Spin Physics and Experiments. Erhard Steffens University of Erlangen-Nürnberg Chair , International Committee for Spin Physics Symposia. Tasks („Mission“) of our Community Spin Symposia and Workshops Where do we stand? Prospects and Outlook.

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Status of Spin Physics and Experiments

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  1. Status of Spin Physicsand Experiments Erhard Steffens University of Erlangen-Nürnberg Chair, International Committeefor Spin PhysicsSymposia Tasks („Mission“) ofour Community Spin Symposiaand Workshops Where do we stand? Prospectsand Outlook

  2. Welcome to PSTP’11 ! • PSTP‘11 is • organizedby Petersburg NuclearPhysics Institute and National Research University • sponsoredbythe International Spin PhysicsCommittee (ISPC) 2011-12 Members, International Committee for Spin Physics Symposia E. Steffens – Erlangen (Chair) T. Roser – BNL (Past-Chair) R. G. Milner – MIT (Chair-Elect) M. Anselmino – Torino A.S. Belov – INR Moscow A.V. Efremov – Dubna Hyan Gao – Duke K.I. Imai – Kyoto A.D. Krisch – Michigan P. Lenisa – Ferrara G. Mallot – CERN M. Poelker – JLab R. Prepost – Madison N. Saito – KEK H. Sakai – Tokyo E.J. Stephenson – IUCF H. Stroeher – Jülich E.N. Tyurin – IHEP Honorary Members F. Bradamante – Trieste E.D. Courant – BNL D.G. Crabb – Virginia G. Fidecaro – CERN W. Haeberli – Wisconsin A. Masaike – Kyoto C.Y. Prescott – Stanford V. Soergel – HeidelbergW.T.H. van Oers - Manitoba PSTP'11 Petersburg Sept.2011

  3. Mission of our Community ‚Spin‘ or ‚Polarization‘ experimentsrequirespecialtechniqueslikepolarizedbeamsand/ortargets, whichare not routinelyavailable. Such techniqueswerefirstdiscussedatspecialsymposia, later in additionattopicalorregularworkshops. The firstsymposiumofthiskindat Basel in 1960 (51 yearsago!) was organizedshortly after thefirstpolarizedionsource – fordeuterons – was running. • These meetingsserveto • spreadthe Know-how ofourspecialtechniques („Spin Tools“) • buildup a community • developnewideas The meetings are initiated by the Spin Committee and organized by Local Groups. They have to follow the rules imposed by the SpinCom in order to provide a platform for new ideas open for every scientist. PSTP'11 Petersburg Sept.2011

  4. History of Spin Conferences Two conference series related to Spin/Polarization phenomena in nuclear and particle physics: • Symposia on Polarization Phenomena in Nuclear Reactions • Symposia on High Energy Spin Physics PSTP'11 Petersburg Sept.2011

  5. Symposia on Polarization Phenomena in Nuclear Reactions • Start: Basel 1960 (Basel: first working polarized ion source & scattering experiments with polarized beam from source!) • Following, every 5 years: Karlsruhe 1965, Madison 1970, Zürich 1975*, Santa Fe 1980*, Osaka 1985*, Paris 1990* (resolution to merge with HE Spin Physics),Bloomington 1994 (last independent meeting, in parallel to HE Spin Physics Symposium) *) attendance PSTP'11 Petersburg Sept.2011

  6. Symposia on High Energy Spin Physics • Start: Argonne 1974 (at ANL: First polarized HE beam in the 12 GeV Zero-Gradient-Synchrotron!) • Following, every 2 years: Argonne 1976, 1978, Lausanne 1980, BNL 1982, Marseille 1984, Protvino 1986, Minneapolis 1988*, Bonn 1990*, Nagoya 1992*, Bloomington 1994 (in parallel to Polarization Symposium) , Amsterdam 1996, Protvino 1998* (last HE Spin Symposium) *) attendance PSTP'11 Petersburg Sept.2011

  7. ‘Joint’ Symposia on Spin Physics • Start: Osaka 2000* Millenium Conference! • Following, every 2 years: Brookhaven 2002*, Trieste 2004*, Kyoto 2006*, Charlottesville 2008*; Jülich 2010*, next meeting: Dubna 2012!! • ISPC Committee composed of members from the former nuclear and HE spin physics community *) attendance PSTP'11 Petersburg Sept.2011

  8. How is the Spin Physics Community linked together? • Spin Symposia are uniquely dedicated to the fundamental role of spin in nuclear and particle physics. • There is consensus, that the connection is mediated by the development of ‘Spin Tools’ enabling us to perform ‘Spin experiments’ or ‘Polarization experiments’. DIS Material science with pol. neutrons Spin tools are discussed in detail at Workshops (regular or topical) Diffraction SPIN TOOLS Nucl. structure NN interaction Spin structure PSTP'11 Petersburg Sept.2011

  9. Spin Story presented by an Insider The talk is not on the Web anymore – ask me for file

  10. The Spin Toolbox Polarized Gas Targets Polarized Solid Targets Polarized Electron Sources Polarimeters Polarized Ion Sources Spin Theory PSTP'11 Petersburg Sept.2011

  11. The first Meeting on Spin Tools (?) The first meeting known to me: Int. Conference on Polarized Targets and Ion Sources Saclay 1966 – Chairman A. Abragam • Solid proton targets polarized by DNP (Jeffries, Borghini, Saclay group, ...) • Application of solid polarized targets for neutron physics: Spectroscopy, Spin Filtering of neutrons (F.L. Shapiro – Dubna),... • Nice overview ‘Polarized Ion Sources’ by R. Beurty (Saclay): Lamb Shift sources and Classical Sources (ABS) – still worth reading! PSTP'11 Petersburg Sept.2011

  12. Early Workshops on Spin Tools • The 2nd conference on (solid) pol. targets took place at Berkeley 1971 (chair: O. Chamberlain) • Work on Spin Tools was discussed at the Polarization Symposia: Karlsruhe 1965 (e.g. 1st ideas on a Colliding Beam Source by W. Haeberli), Madison 1970 (e.g. achromatic focusing by means of a compressor sextupole – H.F. Glavish), Zürich 1975 (e.g. pol. electrons from a GaAs cathode by Müller/IBM) and Santa Fe (e.g. 1st exp. demonstration of the CBS by the Madison group) • Similar work has been presented at the HE Spin Symposia PSTP'11 Petersburg Sept.2011

  13. Early Workshops on Spin Tools Topical workshops – initiated mostly by the HE Spin community: • Ann Arbor 1981 & Vancouver 1883 ‘High intensity pol. proton sources’ • Abingdon 1981, BNL 1982, Bad Honnef 1984 ‘Pol. Target Materials and Techniques’ • Bodega Bay 1985 ‘Polarized antiprotons’ PSTP'11 Petersburg Sept.2011

  14. Workshop Bodega Bay List of topicsdiscussed at theworkshop: Polarized antiprotons from the decay in flight of antihyperons Spin filtering of antiprotons by a polarized hydrogen target in a storage ring Stochastic techniques à la ‘StochasticCooling’ DNP in flight using polarized electrons and microwave radiation Spontaneous Spin-Flip synchrotron radiation Spin-Flip synchrotron radiation induced by X-ray laser Polarization by scattering Repeated Stern-Gerlach deflection Polarized antiprotons via the formation of antihydrogen and application of the ABS method Polarizing during storage in a Penning trap Polarizing by Channeling Polarizing through interaction with polarized X-rays from a diamond crystal *) Proc. Workshop on Polarized Antiprotons, Bodega Bay, CA, 1985. A.D. Krisch, A.M.T. Lin, O. Chamberlain (Edts.), AIP Conf. Proc. 145 (1986) 207

  15. Early Workshops on Spin Tools Topical workshops – initiated mostly by the HE Spin community: • Ann Arbor 1981, Vancouver 1883 ‘High Intensity Pol. Proton Sources’ • Abingdon 1981, BNL 1982, Bad Honnef 1984 ‘Pol. Target Materials and Techniques’ • Bodega Bay 1985 ‘Polarized Antiprotons’ • Montana 1986 ‘Polarized Sources and Targets’ • Minneapolis 1988 and Bonn 1990: several satellite workshops to Spin88 and Spin90 • KEK 1990 ‘Pol. Ion Sources and Gas Jets’ PSTP'11 Petersburg Sept.2011

  16. PSTP'11 Petersburg Sept.2011

  17. Workshop KEK 1990 PSTP'11 Petersburg Sept.2011

  18. Workshops after 1990 After 1990: Workshops predominantly in the uneven years between the Spin Symposia! e.g. on ‘Pol. Beams/Sources and Targets’: Heidelberg 1991 (restricted to ‘Pol. Gas Targets’) PSTP'11 Petersburg Sept.2011

  19. Heidelberg 1991: Polarized Gas Targets • Hot topic: polarized gas targets for storage rings • Running: polarized deuterium target at VEPP3 (Novosibirsk) • Projects: FILTEX/HERMES, IUCF 3He test run, IUCF PINTEX, AmPS (NIKHEF) PSTP'11 Petersburg Sept.2011

  20. Heidelberg 1991: Polarized Gas Targets PSTP'11 Petersburg Sept.2011

  21. Workshops after 1990 After 1990: Workshops predominantly in the uneven years between the Spin Symposia! e.g. on ‘Pol. Beams/Sources and Targets’: Heidelberg 1991 (restricted to ‘Pol. Gas Targets’) Madison 1993, Cologne 1995, Urbana 1997, Erlangen 1999 PSTP'11 Petersburg Sept.2011

  22. Erlangen 1999: PST99 PSTP'11 Petersburg Sept.2011

  23. Erlangen 1999: PST99 PSTP'11 Petersburg Sept.2011

  24. Workshops after 1990 After 1990: Workshops predominantly in the uneven years between the Spin Symposia! e.g. on ‘Pol. Beams/Sources and Targets’: Heidelberg 1991 (restricted to ‘Pol. Gas Targets’) Madison 1993, Cologne 1995, Urbana 1997, Erlangen 1999, Nashville 2001, Novosibirsk 2003, Tokyo 2005, Brookhaven 2007, Ferrara 2009 and now in St. Petersburg 2011 ! PSTP'11 Petersburg Sept.2011

  25. The Spin Toolbox Optically-Pumped Polarized H- Ion Source at RHIC, Brookhaven Nat.Lab. RHIC OPPIS produces reliably 0.5-1.0mA (maximum 1.6 mA) polarized H- ion current. Pulse duration 400 ms. Polarization at 200 MeV P = 85-90 %. Polarized Ion Sources PSTP'11 Petersburg Sept.2011

  26. The Spin Toolbox DANILAC Electron Injector, Darmstadt Polarized Electron Sources PSTP'11 Petersburg Sept.2011

  27. The Spin Toolbox Polarized Solid Targets COMPASS Polarized Target, CERN PSTP'11 Petersburg Sept.2011

  28. The Spin Toolbox Polarized Gas Targets ABS and Storage Cell Target with ANKE Spectrometer, COSY FZ Jülich PSTP'11 Petersburg Sept.2011

  29. The Spin Toolbox HERMES Compton Polarimeter (LPOL) for 27.5GeV Electrons stored in HERA DESY Hamburg Polarimeters PSTP'11 Petersburg Sept.2011

  30. The Spin Toolbox Decomposition of Nucleon Spin, discussed e.g. at recent Theory workshop ‘Transversity 2011’, or the upcoming workshop ‘DSPIN11’ Spin Theory PSTP'11 Petersburg Sept.2011

  31. Future Workshops on Spin Tools • Topical vs. regular workshops • Is the division into different topics reasonable (ion beams & targets, electron sources, solid targets, 3He, ...)? • Do new ideas emerge from such workshops? • Do we have enough exchange with other fields? PSTP'11 Petersburg Sept.2011

  32. Future Workshops on Spin Tools • Atomic beams • Ion beams • Open gas targets • Closed/high pressure gas targets • Solid polarized targets • Photon beams • Electron sources • Polarimetry of • - ion beams • - electrons beams • - recoils • - decay particles • - neutrons • Applications in • - medicine • - material research • - electronics • - ...... PSTP'11 Petersburg Sept.2011

  33. My Conclusions • Our workshops have an impressive history with many innovations for spin experiments • New initiatives needed in order to keep the field up and active • I look forward to a creative meeting in a stimulating atmosphere! PSTP'11 Petersburg Sept.2011

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