********<< International Workshop on Low Energy Solar Neutrinos >>******* CRC会員の皆さま、 以下の様に``International Workshop on Low Energy Solar Neutrinos''を 2000年12月4日 と 5日 に開催致します。 参加を希望される方は、当研究会のホームページ http://www-sk.icrr.u-tokyo.ac.jp/neutlowe を通じて参加登録をお願い致します。 また、国内旅費の補助が必要な方は lownu [at] suketto.icrr.u-tokyo.ac.jp にご連絡ください。 尚、当研究会に引き続き 「ニュートリノ振動とその起源の解明」第2回研究会 も開催されますので http://www-sk.icrr.u-tokyo.ac.jp/noon2000 を併せてご覧下さい。 研究会世話人 鈴木洋一郎、中畑雅行、森山 茂栄 ; 東京大学宇宙線研究所 J.N.Bahcall ; Institute for Advanced Study ============================================================ || International Workshop on Low Energy Solar Neutrinos || ============================================================ On December 4 and 5, 2000, we will have a two-day workshop on the detection of the solar neutrinos below 1 MeV. The workshop will be held at Sanjyo-hall in the University of Tokyo, Tokyo, Japan. The purpose of this workshop is to discuss all aspects of low energy solar neutrino experiments, including problems and techniques. The previous and currently running solar neutrino experiments observed deficit of solar neutrino flux and they strongly suggest neutrino oscillations. Low energy solar neutrinos are measured only by radiochemical experiments so far and we know only the integral flux of those neutrinos. The energy spectrum of solar neutrinos was measured only for 8B neutrinos up to now and the spectrum measurement below 1MeV should supply important information . pp and 7Be neutrinos are main source of low energy solar neutrinos and more than 97% of total solar neutrino flux is predicted to lie below 1 MeV. The flux and spectrum of pp neutrinos are predicted precisely by the standard solar model. The energy spectrum and time dependence of the survival probabilites of those neutrinos should provide crucial information on neutrino oscillations. In order to make detectors for the low energy solar neutrinos, new techniques must be devised to reduce radioactive backgrounds and identify solar neutrino signals. The development of the techniques requires world wide cooperation of researchers interested in neutrino physics and in neutrino astrophysics. Purpose of the Workshop ======================= As a pre-conference of Neutrino 2000, the first Low Energy Solar Neutrino (LowNu) workshop was held at Sudbury. There were presentations from groups constructing or planning low energy solar neutrino experiments----BOREXINO, KamLAND, HERON, CLEAN, Xenon, HELLAZ, LENS, GSO, and MOON. Following the 1st LowNu workshop, we will discuss more about low energy solar neutrinos in order to make low energy real time solar neutrino detectors possible. The subjects of this workshop include: 1) physics goals of the precise measurement of the low energy solar neutrinos, 2) the progress from the constructing and planned experiments, 3) common technical problems related to the experiments, such as cleaning the detector materials, internal/external background reduction, 4) neutrino calibration sources, 5) isotope separation, and 6) interconnection between the low energy solar neutrino experiments to double beta decay and dark matter experiments. Date of the workshop ; December 4 and 5, 2000 ==================== Workshop Site ============= Workshop site is Sanjyo-hall in Hongo-Campus in Univ. of Tokyo, Tokyo, Japan. The nearest international airport is Narita airport and the campus is about one hour by train from Narita. More details about the transportation will be found in the following Web site : http://www-sk.icrr.u-tokyo.ac.jp/neutlowe Registration/Accommodation ========================== Registration for the workshop and reservation of accommodations should be done via the workshop home page : http://www-sk.icrr.u-tokyo.ac.jp/neutlowe The number of participants is limited to 100. Please register at your earliest convenience. Joint Workshop ============== Just after the Low Eenergy Solar Neutrino workshop, we will have another international workshop entitled ''Neutrino Oscillations and their Origin'' from 6th to 8th December at the same workshop site(Sanjyo-hall in Hongo-Campus in Univ. of Tokyo). In this workshop, we will discuss latest results on solar neutrinos and atmospheric neutrinos, theoretical analysis on neutrino oscillations, and related subjects, such as long baseline experiments, search for proton decays and mu->e,gamma decays and etc. Details of the workshop can be found on the website : http://www-sk.icrr.u-tokyo.ac.jp/noon2000 Workshop scientific organizer ============================= Y. Suzuki, M. Nakahata and S. Moriyama ; (Kamioka Observatory, ICRR, Univ. of Tokyo), J.N.Bahcall ; (Institute for Advanced Study) Contact ======= If you have any questions or comments, please send e-mail to the following address. E-mail: lownu [at] suketto.icrr.u-tokyo.ac.jp International Workshop on Low Energy Solar Neutrinos Kamioka Observatory, ICRR, Univ. of Tokyo Higashi-mozumi, Kamioka-cho, Yoshiki-gun, Gifu, Japan, 506-1205 Tel: +81-578-5-9603, Fax: +81-578-5-2121 E-mail: lownu [at] suketto.icrr.u-tokyo.ac.jp homepage: http://www-sk.icrr.u-tokyo.ac.jp/neutlowe