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Connector development

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

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  1. Connector development M.Taguchi(kyoto) T2K ND280meeting@KEK Nov.7.2006

  2. Contents • MPPC new ceramic package • Prototype of connector • Reproducibility • Future development • Summary

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. Characteristics of each connector the connector which have advantages of both types? - good reproducibility2 parts - can connect the fiber and MPPC even if they are fixed  cap type package without screw

  9. 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

  10. 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

  11. Supplement

  12. Alignment • make alignment of MPPC to a fiber with the outside frame of package HPK say this size is made with best precision

  13. 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)

  14. setup for measurement of PDE PMT scan blue LED WLSF 1mmφslit MPPC p.e.(MPPC) PDE(MPPC) /QE(PMT) = p.e.(PMT)

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