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Radiation Dose in a FerroFluid Seel ~ an Update ~

Radiation Dose in a FerroFluid Seel ~ an Update ~. Tohru Takahasi. AWLC2014. Contents. A remark on dose estimation Previous results An update. A Remark. At dose experiment in JAEA Dose is given as an absorption dose in the air which is not exactly the same as the one in the ferro fuild

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Radiation Dose in a FerroFluid Seel ~ an Update ~

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  1. Radiation Dose in a FerroFluidSeel~an Update~ Tohru Takahasi • AWLC2014

  2. Contents • A remark on dose estimation • Previous results • An update

  3. A Remark • At dose experiment in JAEA • Dose is given as an absorption dose in the air which is not exactly the same as the one in the ferrofuild • Difference is about 10 %

  4. Cu • Brass • Brass • Brass • W • Fe • Fe Geometry in used at LCWS2013 • 125 • 5 • Water • 124

  5. Results W/ LCWS2013 geometry • Energy Depotit(MeV)/2mm/10^5e- • S(mm) • Z(mm) • s • z

  6. W/ LCWS2013 Geometry • At Peak • 280MGy/year • The Average over the volume • 120MGy/year • An Experiment at JAEA Takasaki showed,,,, • Ferro fluid won’t survive,,,,, • showed some effects even with • a few MGy,,,

  7. Fe • Fe • Cu • Brass • Brass • Brass • W • LCWS2013 • New Geometory W • 5 • Water Cu Cu • 250 • 400 W W Fe Fe

  8. Results • Energy Depotit(MeV)/2mm/5×10^5e- • S(mm) • Z(mm) • S • Z • Peak 1.5MGy/year • (2630bunch 5Hz 2e10/bunch 1 year = 10^7s)

  9. Summary and Outlook W • Radiation does in the ferrofluid • about 1.5MGy/year with • To procced • new(larger diameter?) geometry to reduce more? • put real design incl. the Flux concentrator Cu Cu W W Fe Fe

  10. A model of slow rotating target(Rigaku) • Area of Ferrofluid • Target

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