Fits to data for a stored uncooled polarized deuteron beam
نویسندگان
چکیده
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هدف اصلی از این تحقیق به دست آوردن و مقایسه حق بیمه باورمندی در مدل های شمارشی گزارش نشده برای داده های طولی می باشد. در این تحقیق حق بیمه های پبش گویی بر اساس توابع ضرر مربع خطا و نمایی محاسبه شده و با هم مقایسه می شود. تمایل به گرفتن پاداش و جایزه یکی از دلایل مهم برای گزارش ندادن تصادفات می باشد و افراد برای استفاده از تخفیف اغلب از گزارش تصادفات با هزینه پائین خودداری می کنند، در این تحقیق ...
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The traditional method of spin-flipping a stored polarized beam is based on slowly crossing an rf induced depolarizing resonance. This paper discusses a novel approach where the polarization reversal is achieved by trapping the beam polarization into a stable spin-flipping motion on top of the rf induced resonance at a half-revolution frequency.
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We recently studied spin flipping of a 270 MeV vertically polarized deuteron beam stored in the Indiana University Cyclotron Facility Cooler Ring. We adiabatically swept an rf solenoid's frequency through an rf-induced spin resonance and observed its effect on the deuterons' vector and tensor polarizations. After optimizing the resonance crossing rate and maximizing the solenoid's voltage, we m...
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We investigate shadowing corrections to the polarized deuteron structure functions g d 1 and b 1. In the kinematic domain of current fixed target experiments we observe that shadowing effects in g d 1 are approximately twice as large as for the unpolarized structure function F d 2. Furthermore, we find that b 1 is surprisingly large at x < 0.1 and receives dominant contributions from coherent d...
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Aim of this paper is to present a brief and basic introduction to polarized beams and the behaviour of a particle’s spin in an electromagnetic field. It is not intended to give a complete presentation of the spin dynamic theory. Instead the most important features are given without proof and details not absolutely necessary are left out. Spin depolarizing mechanisms are discussed and the cures ...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 2013
ISSN: 0168-9002
DOI: 10.1016/j.nima.2013.07.072