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The EURICA Spectrometer Pieter Doornenbal ピ ー タ ー ドルネンバル September 12 th , 2011
Outline General Comments ● General Comments EURICA Physics Case ● EURICA Setup Status ✦ Configuration and location Summary ● Physics Case ● EURICA Status ✦ Organization ✦ Time-line ✦ Work Tasks 2 nd EURICA WS, GSI, September 12 th , 2011 – 3 PD, Status of the EURICA Project
General Comments 2 nd EURICA WS, GSI, September 12 th , 2011 – 4 PD, Status of the EURICA Project
A Brief History and Context Summer 2010–Fall 2010 ● Decision to stop the RISING campaign at GSI in 2011 (to prepare for AGATA demonstrator and DESPEC campaign) triggered interest from the science community for a campaign in 2012/13 at the RIBF in RIKEN ● Initial institutional contacts led to the exchange of supporting letters and (at that point in time) to tentative resource commitments for the potential realization Winter 2010–Spring 2011 ● Contacts with the Owners Committee (OC) for the EUROBALL cluster detectors defined the schedule ● As a project by the research community, a general collaboration workshop was organized at RIKEN for May 23/24 to broadly define the science case, to identify the technical, project-management, and resource aspects and to formally establish the EURICA collaboration ● Construction proposal was submitted to RIBF NP-PAC (deadline May 15) ● EURICA project proposal was submitted to the OC on July 1 2 nd EURICA WS, GSI, September 12 th , 2011 – 5 PD, Status of the EURICA Project
General Aspects ● The EURICA collaboration has free and open access to any researcher interested in joining ● The research program and approval of individual experiments is strictly based on science quality/priority, as peer-reviewed by the RIBF NP-PAC ● The size of the collaboration is expected to be around ≈ 200 scientists (already more than 160 have signed up and indicated specific research interests; international participation is very strong) 2 nd EURICA WS, GSI, September 12 th , 2011 – 6 PD, Status of the EURICA Project
RISING Setup at GSI General Comments ❖ RISING Setup at GSI EURICA Physics Case Status Summary 2 nd EURICA WS, GSI, September 12 th , 2011 – 7 PD, Status of the EURICA Project
EURICA 2 nd EURICA WS, GSI, September 12 th , 2011 – 8 PD, Status of the EURICA Project
What is EURICA? EU ROBALL General Comments EURICA RI KEN ❖ What is EURICA? ❖ RIBF Overview ❖ EURICA Location C luster Physics Case Status A rray Summary 2 nd EURICA WS, GSI, September 12 th , 2011 – 9 PD, Status of the EURICA Project
What is EURICA? EU ROBALL General Comments EURICA RI KEN ❖ What is EURICA? ❖ RIBF Overview ❖ EURICA Location C luster Physics Case Status A rray Summary ● Collaboration that uses high-efficiency Ge-spectrometer for isomeric and β -delayed γ -ray spectroscopy at RIKEN ● 12 Cluster detectors ✦ 84(88) crystals ■ High granularity ■ 15 % photopeak efficiency at 662 keV ● Ancillary detectors, e.g. the SIMBA array 2 nd EURICA WS, GSI, September 12 th , 2011 – 9 PD, Status of the EURICA Project
RIBF Overview Radioactive Ion Beam Factory (RIBF) former RIKEN Accelerator Research Facility (RARF) ● new building (completed in 2005) ● 3 new cyclotrons (operational since 2006) 2 nd EURICA WS, GSI, September 12 th , 2011 – 10 PD, Status of the EURICA Project
Superconducting Ring Cyclotron (SRC) ● K = 2500 MeV Intensities of 345 MeV/ u beams from the SRC: ● 8300 tons Beam Intensity / pnA Nucleus ● 5.36 m extraction radius Achieved Expected FY 2011/12 48 Ca 230 200 ● 6 sector magnets 86 Kr 30 30 124 , 136 Xe (10) 10 ● four main RF cavities 238 U 0.8 5 2 nd EURICA WS, GSI, September 12 th , 2011 – 11 PD, Status of the EURICA Project
EURICA Location 2 nd EURICA WS, GSI, September 12 th , 2011 – 12 PD, Status of the EURICA Project
Physics Case 2 nd EURICA WS, GSI, September 12 th , 2011 – 13 PD, Status of the EURICA Project
Regions of Interest stable isotopes (300) known isotopes (3000) isotopes estimated to exist (6000) 184 number of protons 162 82 Pb 126 50 Sn ● N ≈ Z nuclei 82 ● Nuclei around 78 Ni 28 Ni ● Neutron-rich mass A = 100 region ● Nuclei around 132 Sn 50 28 20 8 number of neutrons 2 2 nd EURICA WS, GSI, September 12 th , 2011 – 14 PD, Status of the EURICA Project
Physics Case From First Workshop (May 23-24, 2011) Nuclei Primary General Comments Spokesperson of Interest Beam EURICA 41 Si 48 Ca Z. Li Physics Case 64,66 Se 78 Kr B. Rubio, Y. Fujita, W. Gelletly ❖ Regions of 71 Kr 78 Kr G. de Angelis, F . Recchia Interest 55 Sc 86 Kr J. Valiente Dobon, G. de Angelis ❖ First Workshop 77 Cu 86 Kr or 238 U E. Sahin, V. Modamio ❖ Second Workshop 78 Zr, 82 Mo 124 Xe A. Gadea Status 100 Sn 124 Xe M. Lewitowicz, R. Krücken, S. Nishimura Summary 127 Ag, 129 Cd 136 Xe H. Watanabe 70,72 Fe 238 U G. Benzoni, H. Watanabe 78 Ni 238 U S. Nishimura 81 Cu 238 U M. Niikura 238 U n-rich Ge, Se, Kr A. Odahara 92,94 Se 238 U R. Krücken 110,112 Mo 238 U T. Bäck, E. Ideguchi 108,110 Zr 238 U T. Sumikama 128 Pd 238 U G. Lorusso 132,134 Cd, 136,138 Sn 238 U A. Gadea, A. Jungclaus, G. Simpson 137 Sb, 138,139 Te 238 U R. Lozeva 238 U n-rich Ba and Xe A. Odahara 170 Dy 238 U H. Watanabe 2 nd EURICA WS, GSI, September 12 th , 2011 – 15 PD, Status of the EURICA Project
In Addition Today General Comments EURICA Physics Case ❖ Regions of Nuclei Primary Interest Spokesperson of Interest Beam ❖ First Workshop ❖ Second Workshop 94 Ag, 96 Cd 124 Xe B. Wadsworth Status 73,75,77 Ni 86 Kr or 238 U D. Sohler 74 Ni 86 Kr or 238 U G. de Angelis Summary 88 Ge, 90 Se 238 U V. Werner 92,94 Se 238 U A. Garnsworthy 238 U Neutron-rich Zr region A. Brucce Below 132 Sn 238 U S. Lalkovski 238 U Neutron-rich Z ≈ 60 E. Ideguchi 2 nd EURICA WS, GSI, September 12 th , 2011 – 16 PD, Status of the EURICA Project
Status, Organization and Work Tasks 2 nd EURICA WS, GSI, September 12 th , 2011 – 17 PD, Status of the EURICA Project
GAMMAPOOL Approval on July 27 th General Comments The Gammapool committee has discussed your EURICA bid at its meeting on July 27th. The project is supported by a rich and attractive physics case and the committee is impressed by the unique EURICA opportunities and the large support base that the project has gathered in a short period of time. We also note very positively the significant commitment by RIKEN in terms of beamtime, resourcing and Physics Case manpower and we have no doubt that the project will reap large scientific rewards. Status We therefore approve, conditional on the signing of an appropriate MoU, the following request: ❖ GAMMAPOOL ❖ Structure a) 88 Cluster Capsules sufficient for 12 Cluster detectors, including 12 Cryostats b) 88 HV elbows ❖ Work Tasks c) 1 Manipulator ❖ Status and d) Specialist equipment for mounting/dismounting to be agreed with GSI Time-Line The committee approves this loan for use until June 30 th 2013. The items listed under b,c and d need ❖ Coming to RIKEN to be agreed with the homebase of the Cluster detectors, GSI. Full records of assembly, test and ❖ Collaboration repair are standard conditions of any loan and will form a part of the MoU. Good communication between the EURICA and PRESPEC campaign managers will be essential. Summary We ask to be kept informed of the progress of the project and will ask for an update by July 1 st of every year, which should include a list of publications and PhD theses based on the use of Gammapool resources. We also ask that the use of Gammapool resources is acknowledged in all appropriate publications. Yours sincerely Rolf-Dietmar Herzberg Chairman Gammapool OC 2 nd EURICA WS, GSI, September 12 th , 2011 – 18 PD, Status of the EURICA Project
Organizational Structure 2 nd EURICA WS, GSI, September 12 th , 2011 – 19 PD, Status of the EURICA Project
Work Tasks ● Infrastructure ✦ Liquid nitrogen pipeline (BigRIPS Team: M. Otake) ✦ Liquid nitrogen filling system (H. Watanabe (procured)) ✦ cables (RINEI, procured) ● Mechanics ✦ Support structure and rail system (G-Tec, procured)) ● Logistics (SN, PD, T. Engert, ...) ✦ Shipment of detectors, electronics, support structure ● Electronics: DGF, Circuit, ... (H. Schaffner, Zh. Li, K. Yoshinaga, ...) ● Detectors ✦ Ge-Detectors (I. Kojouharov, Y. Torii...) ✦ Nishimu-DSSSD (G. Lorusso, Z. Xu) ✦ TUM SIMBA array (Munich Group) ● Data acquisition and analysis (N. Kurz, H. Schaffner, R. Gernhäuser, H. Baba, K. Yoshinaga, ... 2 nd EURICA WS, GSI, September 12 th , 2011 – 20 PD, Status of the EURICA Project
EURICA Status and Time-Line ● May 23 rd –24 th : 1 st EURICA Workshop at RIKEN ● September 12 th : 2 nd EURICA Workshop at GSI 2 nd EURICA WS, GSI, September 12 th , 2011 – 21 PD, Status of the EURICA Project
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