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Connector development. M.Taguchi(kyoto) T2K ND280meeting@KEK Nov.7.2006. Contents. MPPC new ceramic package Prototype of connector Reproducibility Future development Summary. New MPPC package delivered in Oct. Baseline package for T2K.
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Connector development M.Taguchi(kyoto) T2K ND280meeting@KEK Nov.7.2006
Contents • MPPC new ceramic package • Prototype of connector • Reproducibility • Future development • Summary
New MPPC package delivered in Oct. Baseline package for T2K We developed the connector to a fiber which match this package MPPC new ceramic package sensitive region 4mm 6mm
Requirement to the connector • light yield - alignment - minimize the distance b/w fiber and MPPC • Easy handling • Compact size • reproducibility • Low-cost • Detaching is possible
2 parts Touch the edge of fiber to the surface of MPPC with screw It is impossible to screw when fiber and MPPC are fixed screw Prototype 1 ~2parts type~ fiber MPPC
screw Prototype 2 ~3parts type~ fiber MPPC • 3 parts • Touch the edge of fiber to the surface of MPPC with screw • It is possible to screw when fiber and MPPC are fixed fixture
Reproducibility 2parts type light yield (arbi.unit) light yield (arbi.unit) 3parts type +15% reproducibility is better for 2parts type -15% • measure the light from fiber, attaching and detaching the connector repeatedly blue LED connector WLSF
Characteristics of each connector the connector which have advantages of both types? - good reproducibility2 parts - can connect the fiber and MPPC even if they are fixed cap type package without screw
2 parts fixture for fiber stops by friction against the fixture for MPPC use spring to touch the edge of fiber to the surface of MPPC Cap Type Package( Rough draft ) fiber stop by friction. MPPC we will make and test this soon Spring
Summary • developed the 2 type of connectors which match the new ceramic package - reproducibility is better for 2parts type - handling is easier for 3parts type • now consider new type of connector • measurement of PDE with connector is on going
Alignment • make alignment of MPPC to a fiber with the outside frame of package HPK say this size is made with best precision
Setup for measurement of PDE with connector same amount of light connector WLSF blue LED PMT PDE(MPPC with connector) /QE(PMT) p.e.(MPPC) = p.e.(PMT)
setup for measurement of PDE PMT scan blue LED WLSF 1mmφslit MPPC p.e.(MPPC) PDE(MPPC) /QE(PMT) = p.e.(PMT)