Beam Based Alignment at the Kek-atf Damping Ring*
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چکیده
The damping rings of a future linear collider will have demanding alignment and stability requirements in order to achieve the low vertical emittance necessary for high luminosity. The Accelerator Test Facility (ATF) at KEK has successfully demonstrated the vertical emittance below 5 pm [1] that is specified for the GLC/NLC Main Damping Rings. One contribution to this accomplishment has been the use of Beam Based Alignment (BBA) techniques. The mode of operation of the ATF presents particular challenges for BBA, and we describe here how we have deduced the offsets of the BPMs with respect to the quadrupoles. We also discuss a technique that allows for direct measurements of the beam-to-quad offsets.
منابع مشابه
Beam Based Alignment at the Kek Accelerator Test Facility
The KEK Accelerator Test Facility (ATF) damping ring is a prototype low emittance source for the NLC/JLC linear collider. To achieve the goal normalized vertical emittance γεy = 20 nm-rad, magnet placement accuracy better than 30 μm must be achieved. Accurate beam-based alignment (BBA) is required. The ATF arc optics uses a FOBO cell with two horizontally focusing quadrupoles, two sextupoles an...
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.K. EGAWA, M . KIKUCHI, K. KUBO S. KURODA, K. OIDE, 3; SAKANAKA, N. TERUNUMA, J. URAKAWA KEK; ,National Laboratory for HighEnergy Physics, Tsukuba, lbaraki 305, Japan --_ . . . Abstract The resultspf calculations and simulations of the vertical emittance in the KEK Accelerator Test Facility damping ring are described. Both systematic and random alignment tolerances and a skew correction scheme ...
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تاریخ انتشار 2004