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FiDeL - task force. 17 April 2008. Overall status. Why a crisis now ?. The AB-OP team (LSA) runs the commissioning with the theoretical transfer functions derived from the layout file Constant B/I Wrong values by several % The errors (dipoles) are not modeled

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Fidel task force

FiDeL - task force

17 April 2008



Why a crisis now
Why a crisis now ?

  • The AB-OP team (LSA) runs the commissioning with the theoretical transfer functions derived from the layout file

    • Constant B/I

    • Wrong values by several %

    • The errors (dipoles) are not modeled

  • Circuit parametrization is requested for now, only NS is working on this


How to get out of the blues
How to get out of the blues

  • Jump to the objective

    • Use the present data structure (not complete, not completely coherent)

    • Split the magnets in families (see table)

    • Assign a responsible and cognizable person to each family, who

      • Looks for the data (wherever the data is, in whichever form) and sorts it

      • Models the data to extract fit parameters

      • Judges whether the fit is appropriate/stable/good

      • Tests the model

      • Provides as a result the set of parameters in the presently defined format to AB-OP who centralizes this result



Packages of work
Packages of work

  • Each package requires about 3 pmw

    • Excel tool for model evaluation: PH

    • MB: NS

    • MQ: TBD

    • MQM: NCL (help from WVD for the data)

    • MQY: NCL (help from WVD for the data)

    • D1…D4: JM

    • MQX: ET

    • MQW: GdR ? - data provided by MB

    • MBW MBXW, MCBW: TBD - data provided by MB

    • Correctors: VR+RW (internal split) (help from WVD for the data)

    • Dynamic model: NS

  • Book-keeping of data, www page: LD

  • Cycling specification: RW+GD


Background tasks
Background tasks

  • Complete the data validation, correction when necessary, indexing and storage. Coordinated by RW

  • Define and execute dedicated measurement programs. Coordinated by AV

    • Snap-back correlation with FAME

    • Tracking re-test (LSA validation, b3/B2 tracking in SSS)

    • Low current and cycle dependence for MQM and MQY (vertical and horizontal)