PAC09 - List of Authors (Lundgren, S.A.)

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Lundgren, S.A.

Paper	Title	Page
WE6RFP030	Recent Progress on the Design of a Rotatable Copper Collimator for the LHC Collimation Upgrade	2853
	J.C. Smith, L. Keller, S.A. Lundgren, T.W. Markiewicz SLAC, Menlo Park, California L. Lari EPFL, Lausanne
	Funding: Work supported in part by the U.S. Department of Energy contract DE-AC02-76SF00515 The Phase II upgrade to the LHC collimation system calls for complementing the 30 high robust Phase I graphite collimators with 30 high Z Phase II collimators. One option is to use metallic rotatable collimators and this design will be discussed here. The Phase II collimators must be robust in various operating conditions and accident scenarios. Design issues include: 1) Collimator jaw deflection due to heating and sagita must be small when operated in the steady state condition, 2) Collimator jaws must withstand transitory periods of high beam impaction with no permanent damage, 3) Jaws must recover from accident scenario where up to 7 full intensity beam pulses impact on the jaw surface and 4) The beam impedance contribution due to the collimators must be small to minimize coherent beam instabilities. The current design will be presented.

Paper

Title

Page

WE6RFP030

Recent Progress on the Design of a Rotatable Copper Collimator for the LHC Collimation Upgrade

2853

J.C. Smith, L. Keller, S.A. Lundgren, T.W. Markiewicz
SLAC, Menlo Park, California
L. Lari
EPFL, Lausanne

Funding: Work supported in part by the U.S. Department of Energy contract DE-AC02-76SF00515

The Phase II upgrade to the LHC collimation system calls for complementing the 30 high robust Phase I graphite collimators with 30 high Z Phase II collimators. One option is to use metallic rotatable collimators and this design will be discussed here. The Phase II collimators must be robust in various operating conditions and accident scenarios. Design issues include: 1) Collimator jaw deflection due to heating and sagita must be small when operated in the steady state condition, 2) Collimator jaws must withstand transitory periods of high beam impaction with no permanent damage, 3) Jaws must recover from accident scenario where up to 7 full intensity beam pulses impact on the jaw surface and 4) The beam impedance contribution due to the collimators must be small to minimize coherent beam instabilities. The current design will be presented.