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NA62 Spectrometer: A Low Mass Straw Tracker
The NA62 experiment at CERN, aiming at a precision measurement of the ultra-rare decay K + → π + νν, relies on kinematical rejection up to 10 5 (≈ 10 12 is needed in total). One of the limiting factors to achieve this goal is the multiple scattering in the magnetic spectrometer for kaon decay produc...
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| Lenguaje: | eng |
| Publicado: |
2012
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| Acceso en línea: | https://dx.doi.org/10.1016/j.phpro.2012.03.713 http://cds.cern.ch/record/2103401 |
| Sumario: | The NA62 experiment at CERN, aiming at a precision measurement of the ultra-rare decay K + → π + νν, relies on kinematical rejection up to 10 5 (≈ 10 12 is needed in total). One of the limiting factors to achieve this goal is the multiple scattering in the magnetic spectrometer for kaon decay products; therefore an almost massless (≈1.5% X0) straw tracker has been designed to operate in vacuum, to be able to install it inside the decay volume. A vacuum tight prototype was built and tested in 2010: efficiency (≈99%), rate capability and single straw resolution (≈200 μm) were verified. The construction of the first chamber started in 2011. |
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