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| Report | PreJuSER-135879 |
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2006
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
Jülich
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Please use a persistent id in citations: http://hdl.handle.net/2128/2548 doi:10.34734/PreJuSER-135879
Report No.: Juel-4212
Abstract: The year 2005 has been a challenging one for the institute: as a consequence of the “mixed results” of the first review in February 2004 within the Research Programme “Physics of Hadrons and Nuclei” in the Research Field “Structure of Matter” of the Helmholtz Centres, IKP was faced with substantial cuts in resources for 2005. An even more serious threat ensued with possible further reductions for the years 2006 – 2009, depending, however, on the outcome of an “in-depth” evaluation of the IKP activities. The review on “COSY and FZJ contributions to FAIR”, conducted by an international committee, and headed by Peter Paul (BNL, USA), took place on two days in April 2005. IKP presented its strategy for the further use of COSY and, in close collaboration with GSI (Darmstadt), the cooperation towards the construction of the FAIR facility. In its report, issued later last year, the committee almost fully supported our plans, and as a result and the financial agreements, which have been negotiated in the meantime, we now have a solid basis for the remainder of the first funding period (2006 – 2009). — I would like to take this opportunity to thank all who contributed to this great success in one way or the other. One of the explicit recommendations of the committee was to give green light for the relocation of the WASA detector from CELSIUS (Uppsala, Sweden) to COSY. The detector dismount at TSL and transfer to FZJ was completed in 2005, and we are now in the process of installing WASA at an internal target station of COSY — more details are given in the main text. Commissioning of WASA is scheduled to begin in the second half of 2006 and first experiments are expected to start in 2007. In connection with the WASA-at-COSY project, the IKP had decided to reduce the amount of COSY beamtime for users in 2005 by about 2000 hours. The increased downtime is needed to install WASA in the COSY ring, but also has the positive side-effect that the cost-savings will be used to finance necessary maintenance and upgrades of WASA detector components and electronics. This was part of the financing concept which has been worked out between the IKP directorate and the FZJ board of management. On the scientific frontier, IKP has made a number of important contributions (details can again be found in the main text): • The ANKE collaboration has found indications for a heavy hyperon state Y$^{0*}$(1480) in the analysis of pp $\rightarrow$ pK$^{+} \pi$X at a beam momentum of 3.65 GeV/c. • The GEM collaboration has determined the mass of the h meson with unprecedented accuracy, exploiting the reaction pd $\rightarrow$ $^{3}He \eta$ and simultaneously pd $\rightarrow$ t$\pi^{+}$ at the BIG KARL magnetic spectrometer (see cover picture and corresponding article). • At COSY the efficiency for flipping the proton spin by means of a small rf dipole has been pushed to more than 99.9%. • The intensity of the polarized ion source for H$^{−}$ was raised to 50$\mu$A, thus doubling its original specification. The involvement of the IKP in the FAIR project to be realized at the GSI was fully honored by the committee. Our efforts are focused on the design and construction of the High Energy Storage Ring (HESR) and significant contributions to the PANDA detector. We are dedicated to make this endeavor a success being aware of its great potential to advance hadron physics and connected fields during the next decades. We have been able to meet the challenges of 2005 not only due to our own efforts, but because we could rely on the support and advice of many people. I like to express our gratitude to all of them, the colleagues from the infrastructure of our Research Center (FZJ) in particular ZAM, ZAT, and ZEL, the people from the universities and research centers from Germany and all over the world and, last but not least, the CANU community.
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