Author/Authors :
Glazier، نويسنده , , D.I. and Livingston، نويسنده , , K. D. Owens، نويسنده , , R.O. and Annand، نويسنده , , J.R.M. and Clarkson، نويسنده , , A. and Grabmayr، نويسنده , , P. and Heid، نويسنده , , E. and Lumsden، نويسنده , , P.S. and McGeorge، نويسنده , , J.C. and McGregor، نويسنده , , I.J.D. and Paterson، نويسنده , , C. and Reiter، نويسنده , , A. and Thomas، نويسنده , , A. and Watts، نويسنده , , D.P.، نويسنده ,
Abstract :
The angular distribution of the linearly polarised photon beam produced by coherent bremsstrahlung from an aligned diamond radiator has been measured at the MAMI A2 tagged photon facility. The measurements were made with a prototype position sensitive photon detector which utilises the pair production process and a double sided silicon strip detector. This polarised photon beam is used for nuclear and hadronic experiments and in their analysis the polarisation is obtained from a calculation, which matches the experimental intensity spectrum. As the polarisation is related to the photon beam angular distribution, the present measurements can be used to test this calculation. The overall agreement is found to be good although there are some regions where significant discrepancies exist.
Keywords :
Photon detector , Coherent bremsstrahlung , Linear polarisation , Bremsstrahlung , Diamond radiator
