Title :
Experimental evidence for beam-beam disruption at the SLC
Author :
Barklow, T. ; Bower, G. ; Decker, F.J. ; Field, C. ; Hendrickson, L.J. ; Markiewicz, T. ; McCormick, D.J. ; Minty, M. ; Phinney, N. ; Raimondi, P. ; Ross, M.C. ; Thompson, K.A. ; Usher, T. ; Woodley, M.D. ; Zimmermann, F.
Author_Institution :
Linear Accel. Center, Stanford, CA, USA
Abstract :
A significant luminosity enhancement from beam-beam disruption was observed for the first time during the 1997-98 run of the SLAC Linear Collider (SLC). Disruption, or pinch effect, is due to the decrease in effective beam size during collisions as each beam is focused by the field of the other beam. With beam intensities of 4.0 1010 per bunch, bunch lengths of 1.1 mm, and horizontal and vertical beam sizes of σx=1.5 μm and σy=0.65 μm, the luminosity increase from disruption was more than 100%. Measured data rates as recorded by the SLD detector were in agreement with the theoretically calculated disruption enhancement
Keywords :
electron accelerators; linear colliders; particle beam bunching; particle beam diagnostics; particle beam stability; SLC; beam-beam disruption; bunch length; effective beam size; horizontal beam size; luminosity; pinch effect; vertical beam size; Colliding beam devices; Degradation; Electromagnetic fields; Electromagnetic measurements; Equations; High definition video; Nonlinear distortion; Physics; Storage rings; Superluminescent diodes;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.795691
