IceCube Institutional Memorandum Of Uderstanding (MOU)
Chiba University
(Shigeru Yoshida) 3 (1 2 3) |
2.1 Program Management
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2.2 Detector Operations & Maintenance
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2.3 Computing & Data Management
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2.4 Triggering & Filtering
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2.5 Data Quality, Reconstruction & Simulation Tools
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Total
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0.03
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0.4
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0.6
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1.03
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note 1
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note 2
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Note 3
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| (1). Monitoring (2). EHE-wg lead (Yoshida, 0.25); EHE filters (M. Ono, 0.15) |
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| (3), Maintain Romeo; EHE simulation |
Chiba was responsible for the PMT and EHE simulation programs and many of our service tasks are related to these business. The detector simulation project, Romeo, which is also responsible for the DOM’s acceptance calculation to be implemented in the Photonics, is maintained by our group (S. Yoshida, K. Mase) who includes one of the original authors of Romeo (S. Yoshida). Since better understanding of the after pulse behavior of the PMT we have seen in fADC data is more and more important, our service tasks also include the measurement of the PMT after-pulsing and its implementation of the newly built simulation project (Y. Hasegawa, S. Yoshida). Our other service activities include the charge timing extractor module, Portia, (A. Ishihara) , which is alternative to FeatureExtractor for processing large pulses in DOM. This module has been frequently used in EHE and monopole analysis that must handle extremely luminous events. The EHE simulation framework/meta-project is maintained by K. Mase and S. Yoshida, and A. Ishihara.
Chiba also works on EHE filters that contain most energetic population of IceCube events (M. Ono). The filterd data are compared with simulation (A. Ishihara) for confirming our detector response and its stability to high energy data.
Our analysis efforts are mainly focused in search for extremely-high energy neutrinos. It motivates our activities in EHE + IceTop coincident event analysis. A. Ishihara and S. Yoshida are also interested in high energy muon bundle characteristics. We hope these efforts will contribute to IceCube cosmic ray physics and also to better modeling of backgrounds that enhances IceCube capability of neutrino signal hunting in wide energy range.
Chiba’s capability for MC data production has been improved. We work on high energy Corsika simulation and Juliet signal simulation. As network bandwidth from Japan to US is limited, we transfer data to Madison by shipping USB disks. K. Mase and A. Ishihara maintains this service activity.
Faculty:
Shigeru Yoshida - Lead EHE wg, maintain Romeo and EHE simulations
Scientists and Post Docs:
Keiichi Mase - maintain Romeo and EHE simulation, MC/Data comparison for high- energy events, flasher/Standard candle analysis for detector calibration
Aya Ishihara – maintain EHE simulation. MC/Data comparison for EHE-filtered and IceTop events, maintain the reconstruction projects (Portia)
Students:
Mina Inaba – The “permanent” monitor expert. Standard candle analysis, improve the ice model in the simulation
Yuusuke Hasagawa – (high-QE) DOM calibration, afterpulse simulator
Mio Ono – EHE filters, maintain the reconstruction projects (Ophelia, ehe-star), improve the ice model in the simulation