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 ______    __   __    _____    __   __    _____   
|      \\  \ \\/ //  / ____||  \ \\/ //  /  ___|| 
|  --  //   \ ` //  / //---`'   \ ` //  | // __   
|  --  \\    | ||   \ \\___      | ||   | \\_\ || 
|______//    |_||    \_____||    |_||    \____//  
`------`     `-`'     `----`     `-`'     `---`

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Text this: Ion beam emittance measurement based on transformation matrix theory