SN0435 : Analysis of Low Energy AGS Polarimeter Data and Potential Consequences for RHIC Spin Physics
Updated on Sat, 2007-07-14 02:33. Originally created by chajecki on 2007-06-18 19:57.
| Author(s) | : | R. Cadman, K. Krueger, H. Spinka, D. Underwood, A. Yokosawa, H. Huang |
| Date | : | Jun. 5, 2001 |
| File(s) | : | sn0435.ps.gz |
| Abstract | : | The small asymmetries measured at Ggamma=7.5 during the RHIC spin commissioning were a serious concern. In earlier runs, asymmetries double those from the spin commissioning time (September 2000) had sometimes been observed, and there had been few changes to the AGS polarimeter hardware or operating conditions. Recently, the observed changes in the asymmetries measured at Ggamma=7.5 have been ascribed to contamination of the carbon target asymmetry with that from the fishline target and vice-versa, because of the sizeable beam spot size compared to the separation of the targets. This note addresses this hypothesis using the observed asymmetries. This problem could directly impact spin physics at RHIC. |
| Keywords | : | |
| Category | : | PWG |