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SciBar for Booster Neutrinos

March 30, 2005. SciBar for Booster Neutrinos. T. Nakaya (Kyoto). 1. Introduction. SciBar Fine-segmented Full-active scintillator tracker FNAL Booster Beamline Intense Low-energy neutrino beam ➾ A Precision Neutrino Scattering Experiment. 2. Physics Motivation.

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SciBar for Booster Neutrinos

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  1. March 30, 2005 SciBar for Booster Neutrinos T. Nakaya (Kyoto)

  2. 1. Introduction • SciBar • Fine-segmented Full-active scintillator tracker • FNAL Booster Beamline • Intense Low-energy neutrino beam ➾ A Precision Neutrino Scattering Experiment

  3. 2. Physics Motivation • Neutrino Run (target: 5E19 POT, 3 months ?) • nm CCQE • Precise fluxs measurement for MiniBooNE. • If the flux information is available from HARP, it can provide the precise s measurement for T2K. • nm CC-coherent p • Give a definite conclusion to the forward m deficit in CC n interaction. How small is s( CC-coherent p)? • nm CC-resonant p • Important mode as background for T2K nm disappearance. • nm CC-DIS • It is important to check the Bodek-Yang collection at low q2. However, I have no idea how to study it with SciBar data. • ne CC • Precise measurement for MiniBooNE ne search. • p0 • ds/dpp0 measurement for MiniBooNE and T2K. • If CC-coherent p is suppressed, how small is NC-coherent p0? Is the NC-coherent s consistent with the result by Aachen at 2GeV? Is the relation of CC/NC=2 for coherent p correct? • Single g (DNg) production [n+n(p)  CC:mgp ,or NC:ngn(p) ] • The first measurement for an important background mode of T2K MiniBooNE and T2K. Can we reject p0 background to search for the single g production?

  4. 2. Physics Motivation (continue) • Anti-Neutrino Run (target: 10E19 POT, 6 months ?) • nm CCQE • The first anti-neutrino s measurement. It is important for T2K-II. • nm CC-coherent p • This is a good check for neutrino s(CC-coherent p) measurement since the background is smaller in anti-neutrino. • p0 • The first(?) p0 data in low energy neutrino. • NC-coherent p0 signal with less background. • In SciBar, NC-coherent p0 measurement may be only possible with anti-neutrino beam because of the large non-coherent p0 background in neutrino mode.

  5. 3. What we can provide and what we may request. • Provide • Full SciBar detector with electronics. • Man power (~5 FET?) and expertise to install and build the SciBar detector at FNAL. • EM calorimeter ?? I have to ask K2K Italian colleague. • If we are approved, Japan-US research fund for travel expense, shipping and operation. • Request • MRD • Help of manpower during installation. • We may need 10~20 people/day for 2 months. • High Voltage Power supply for 224 MA-PMTs. • We have a very old HV system used for the TRISTAN experiment 20 years ago. I expect that the Lecroy HV system used for KTeV may be available. • Experimental Hall with air-conditioner and crane. • With the recent study by Morgan, it looks like that we should locate the detector on-axis to get fruitful physics.

  6. 4. Possible collaborators from K2K. • Kyoto • K. Nishikawa, T. Nakaya, M. Yokoyama, 1 Post-Doc., ~3 students • KEK • Y. Hayato, + a few members? • Other K2K institute • I never asked this to the K2K collaboration. Possibly, some collaborators may join.

  7. 5. Schedule (as my guess)

  8. 5. Schedule (continue) • Limitation • In Japan, we will get the fund in April, 2006 in the earliest case. • I guess that the experimental hall is not ready before summer 2006. • In summer 2008, we start installing a neutrino detector for T2K. T2K starts in April, 2009.

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