IPAC2014 - List of Authors (Santana-Leitner, M.)

Paper	Title	Page
MOPME040	MadFLUKA Beam Line 3D Builder. Simulation of Beam Loss Propagation in Accelerators	463
	M. Santana-Leitner, Y. Nosochkov, T.O. Raubenheimer SLAC, Menlo Park, California, USA
	Funding: This work was supported by Department of Energy contract DE-AC02-76-SFO0515 Beam tracking programs provide information of orbits along the nominal trajectory to design beam-line optics. Other aspects like machine or radiation protection, which inspect the transverse dimensions and volumes, are simulated with radiation transport Monte Carlo codes, some of which also include magnetic tracking capabilities. Evaluation of certain aspects, like beam loss shower induced propagation along a beam line, or beam mis-steering phase-space, would require to combine features of both types of codes, or use the latter ones with full accelerator 3D implementations, often too cumbersome and time consuming. This paper presents MadFLUKA, a program that produces FLUKA compatible geometries from MAD files. Objects selected from a user user-configurable database are auto-replicated with the rules of ‘twiss’ and ‘survey’ files to create beam lines with hundreds of components. FLUKA magnetic subroutine is generated from MAD optics, including history randomization of fields for ray-trace analysis of mis-steering failures. MadFLUKA is used in the design of the LCLS-II, at SLAC.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPME040
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THPRI086	Beam Dumps of the New LCLS-II	3973
	M. Santana-Leitner, A. Ibrahimov, L.Y. Nicolas, S.H. Rokni, D.R. Walz, J.J. Welch SLAC, Menlo Park, California, USA
	Funding: Work supported by U.S. Department of Energy contract DE-AC02-76SF00515. In 2013 the design of the new LCLS-II new hard X-FEL facility at the SLAC National Accelerator Laboratory was rescoped to operate two parallel variable gap undulator lines at repetition rates up to 1MHz and above. A new superconducting RF structure will be installed in the first third of the SLAC two-mile Linac to provide a few hundred kWof beam power at energies of up to 4 GeV. This paper describes the radiological aspects of the dumps that are being designed for the end of the electron beam lines. A layered arrangement of shielding materials is being optimized to reduce instantaneous dose leakage to occupied areas, minimum cool-down time to access the tunnel, and impact to equipment and to the environment. Calculations deal with numerous constraints, as legacy beam components will be used, and the existing tunnel structure was designed for beam powers fifty times below those envisaged for LCLS-II.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRI086
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

MadFLUKA Beam Line 3D Builder. Simulation of Beam Loss Propagation in Accelerators

463

M. Santana-Leitner, Y. Nosochkov, T.O. Raubenheimer
SLAC, Menlo Park, California, USA

Funding: This work was supported by Department of Energy contract DE-AC02-76-SFO0515
Beam tracking programs provide information of orbits along the nominal trajectory to design beam-line optics. Other aspects like machine or radiation protection, which inspect the transverse dimensions and volumes, are simulated with radiation transport Monte Carlo codes, some of which also include magnetic tracking capabilities. Evaluation of certain aspects, like beam loss shower induced propagation along a beam line, or beam mis-steering phase-space, would require to combine features of both types of codes, or use the latter ones with full accelerator 3D implementations, often too cumbersome and time consuming. This paper presents MadFLUKA, a program that produces FLUKA compatible geometries from MAD files. Objects selected from a user user-configurable database are auto-replicated with the rules of ‘twiss’ and ‘survey’ files to create beam lines with hundreds of components. FLUKA magnetic subroutine is generated from MAD optics, including history randomization of fields for ray-trace analysis of mis-steering failures. MadFLUKA is used in the design of the LCLS-II, at SLAC.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPME040

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPRI086

Beam Dumps of the New LCLS-II

3973

M. Santana-Leitner, A. Ibrahimov, L.Y. Nicolas, S.H. Rokni, D.R. Walz, J.J. Welch
SLAC, Menlo Park, California, USA

Funding: Work supported by U.S. Department of Energy contract DE-AC02-76SF00515.
In 2013 the design of the new LCLS-II new hard X-FEL facility at the SLAC National Accelerator Laboratory was rescoped to operate two parallel variable gap undulator lines at repetition rates up to 1MHz and above. A new superconducting RF structure will be installed in the first third of the SLAC two-mile Linac to provide a few hundred kWof beam power at energies of up to 4 GeV. This paper describes the radiological aspects of the dumps that are being designed for the end of the electron beam lines. A layered arrangement of shielding materials is being optimized to reduce instantaneous dose leakage to occupied areas, minimum cool-down time to access the tunnel, and impact to equipment and to the environment. Calculations deal with numerous constraints, as legacy beam components will be used, and the existing tunnel structure was designed for beam powers fifty times below those envisaged for LCLS-II.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRI086

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)