CERN Accelerating science

Article
Title	Recent T980 Crystal Collimation Studies at the Tevatron Exploiting a Pixel Detector System and a Multi-strip Crystal Array
Author(s)	Still, D (Fermilab) ; Annala, G E (Fermilab) ; Carrigan, R A (Fermilab) ; Drozhdin, A I (Fermilab) ; Johnson, T R (Fermilab) ; Mokhov, N V (Fermilab) ; Previtali, V (Fermilab) ; Rivera, R (Fermilab) ; Shiltsev, V (Fermilab) ; Zagel, J (Fermilab) ; Zvoda, V V (Northern Illinois U.) ; Mirarchi, D (CERN) ; Redaelli, S (CERN) ; Guidi, V (INFN, Ferrara) ; Mazzolari, A (INFN, Ferrara) ; Ivanov, Y M (St. Petersburg, INP) ; Yazynin, I A (Serpukhov, IHEP) ; Chesnokov, Y A (Serpukhov, IHEP)
Publication	2012
Number of pages	3
In:	Conf. Proc. C1205201 (2012) pp.MOPPD082
In:	3rd International Particle Accelerator Conference, New Orleans, LA, USA, 20 - 25 May 2012, pp.559-561
Subject category	Accelerators and Storage Rings
Abstract	With the shutdown of the Tevatron, the T-980 crystal collimation experiment at Fermilab has been successfully completed. Results of dedicated beam studies in May 2011 are described in this paper. For these studies, two multi-strip crystals were installed in the vertical goniometer and an O-shaped crystal installed in a horizontal goniometer. A two-plane CMS pixel detector was also installed in order to enhance the experiment with the capability to image the profile of crystal channeled or multiple volume reflected beam. The experiment successfully imaged channeled beam from a crystal for 980-GeV protons for the first time. This new enhanced hardware yielded impressive results. The performance and characterization of the crystals studied have been very reproducible over time and consistent with simulations.