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2011•International Linear ColliderOpen access

APERTURE DETERMINATION IN THE LHC BASED ON AN EMITTANCE BLOWUP TECHNIQUE WITH COLLIMATOR POSITION SCAN

R. Aßmann, S Redaelli, G J Müller, Daniel Wollmann, J. Wenninger, Maria del Carmen Alabau, M. Giovannozzi, F. Schmidt, Roderik Bruce, Rogelio Tomás

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Abstract

A new method to determine the LHC aperture was proposed. The new component is a collimator scan technique that refers the globally measured aperture limit to the shadow of the primary collimator, expressed in sigmas of rms beam size. As a by-product the BLM response to beam loss is quantified. The method is described and LHC measurement results are presented.

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A new method to determine the LHC aperture was proposed. The new component is a collimator scan technique that refers the globally measured aperture limit to the shadow of the primary collimator, expressed in sigmas of rms beam size. As a by-product the BLM response to beam loss is quantified. The method is described and LHC measurement results are presented.

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Available abstract

A new method to determine the LHC aperture was proposed. The new component is a collimator scan technique that refers the globally measured aperture limit to the shadow of the primary collimator, expressed in sigmas of rms beam size. As a by-product the BLM response to beam loss is quantified. The method is described and LHC measurement results are presented.

Key concepts: Collimator, Aperture (computer memory), Optics, Large Hadron Collider, Physics, Beam (structure), Shadow (psychology), Thermal emittance

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