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Progress Update on Target and Horns for MiniBooNE Collaboration

This document summarizes the ongoing collaboration efforts regarding the target and horns for the MiniBooNE experiment. Active discussions are being held with E. Zimmerman and L. Bartoszek regarding beam Monte Carlo simulations and contributions from RAL on target designs. Meetings with BNL focus on target development. Teams from KEK, Kyoto, and LSU are contributing to the design of target cooling pipes and conducting tests on the 1st horn's inner conductor. Finalization of the inner conductor shape for the 3rd horn is underway, alongside validations for safety factors in the cooling system.

beverly-ramos
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Progress Update on Target and Horns for MiniBooNE Collaboration

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  1. Collaboration Target&horns@IBR 040721 • Active discussion with E.Zimmerman and L. Bartoszek(MiniBooNE horn constructor) on the horns and beam MC is on going. • There was a discussion on possible contribution by RAL on target and baffle. • There was a meeting with BNL around target. • In these days, in addition to KEK, people from Kyoto (Nakadaira, Sato) and LSU(Hatakeyama) are working on target&horns. status • Conceptual design of the target cooling pipes have been done. • Start discussion with company about R&D and actual production. • Cooling test for the 1st horn inner conductor are being done. • Inner conductor shape of the 3rd horn is almost finalized.

  2. Target cooling pipe design (T.Nakadaira et al.) Inner pipe He He Outer pipe Helium directly cool graphite target. Outer pipe by Ti Inner pipe by Ti/graphite

  3. 1st Horn Cooling Test (H.Sato et al.) Nozzles Outer conductor nozzles arrangement will be determined based on this measurement. Heater as inner conductor Water

  4. Horn3 inner conductor shape Optimized model Original modified Almost no effect! Realistic shape to get sufficient safety factor Uniform 3mm thickness Rmin=73m

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