TY - JOUR
T1 - A metrology system for a high resolution cavity beam position monitor system
AU - Walston, S.
AU - Boogert, S.
AU - Chung, C.
AU - Fitsos, P.
AU - Frisch, J.
AU - Gronberg, J.
AU - Hayano, H.
AU - Hinton, S.
AU - Honda, Y.
AU - Khainovski, O.
AU - Kolomensky, Y.
AU - Loscutoff, P.
AU - Lyapin, A.
AU - Malton, S.
AU - May, J.
AU - McCormick, D.
AU - Meller, R.
AU - Miller, D.
AU - Orimoto, T.
AU - Ross, M.
AU - Slater, M.
AU - Smith, S.
AU - Smith, T.
AU - Terunuma, N.
AU - Thomson, M.
AU - Urakawa, J.
AU - Vogel, V.
AU - Ward, D.
AU - White, G.
PY - 2013/11/11
Y1 - 2013/11/11
N2 - International Linear Collider (ILC) interaction region beam sizes and component position stability requirements will likely be as small as a few nanometers. It is important to the ILC design effort to demonstrate that these tolerances can be achieved–ideally using a beam-based stability measurement. We developed a high resolution RF cavity Beam Position Monitor (BPM) system. A triplet of these BPMs, installed in the extraction line of the KEK Accelerator Test Facility (ATF) and tested with its ultra-low emittance beam, achieved a position measurement resolution of 15 nm. A metrology system for the three BPMs was subsequently installed. This system employed optical encoders to measure each BPM's position and orientation relative to a zero-coefficient of thermal expansion carbon fiber frame. We have demonstrated that the three BPMs behave as a rigid-body at the level of less than 5 nm.
AB - International Linear Collider (ILC) interaction region beam sizes and component position stability requirements will likely be as small as a few nanometers. It is important to the ILC design effort to demonstrate that these tolerances can be achieved–ideally using a beam-based stability measurement. We developed a high resolution RF cavity Beam Position Monitor (BPM) system. A triplet of these BPMs, installed in the extraction line of the KEK Accelerator Test Facility (ATF) and tested with its ultra-low emittance beam, achieved a position measurement resolution of 15 nm. A metrology system for the three BPMs was subsequently installed. This system employed optical encoders to measure each BPM's position and orientation relative to a zero-coefficient of thermal expansion carbon fiber frame. We have demonstrated that the three BPMs behave as a rigid-body at the level of less than 5 nm.
KW - cavity beam position monitor (BPM)
KW - accelerator test facility (ATF)
KW - international linear collider (ILC)
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84880310193&partnerID=MN8TOARS
U2 - 10.1016/j.nima.2013.05.196
DO - 10.1016/j.nima.2013.05.196
M3 - Article
SN - 0168-9002
VL - 728
SP - 53
EP - 58
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -