Simple Beam-Optic Simulations and Proposed Mechanical Mitigation for the Triplet Oscillation Problem

Thieberger,P. ; Montag, C. ; Snydstrup, L. ; Trbojevic, D. ; Tuozzolo, J.

Brookhaven National Laboratory

关键词: Oscillation Modes;    43 Particle Accelerators;    Computerized Simulation;    Quadrupoles;    Beam Transport;   

DOI  :  10.2172/939979
RP-ID  :  BNL--81592-2008-IR
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  939979

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来源: UNT Digital Library

【 摘 要 】

The purpose of these simulations is to gain a better understanding of the relative contributions to the beam perturbation from the main horizontal oscillation modes (yawing and rolling) of Q1, Q2, and Q3. For this purpose, a simple beam transport program was implemented with an EXCEL spreadsheet to calculate the horizontal beam envelop through the Q1, Q2, Q3 triplet up to the IP, with the possibility of specifying horizontal displacements of the singlets. For now, the weak focusing properties of D0 and DX have been ignored, but could easily be included in the future if necessary. In a first simulation, quadrupole strengths have been adopted that correspond to {beta}* = 2m at the IP. The parameters used listed in Table 1 were obtained from references [1] and [2].