IPAC2015 - List of Authors (Tropin, I.S.)

Paper	Title	Page
TUPJE081	Model of Dark Current in SRF Linac	1834
	A.I. Sukhanov, A. Saini, N. Solyak, I.S. Tropin Fermilab, Batavia, Illinois, USA
	Currently, few linacs based on 9-cell TESLA-type SRF cavities are being designed or bult, including XEFL, LCLS-II and ILC. Dark current electron generated by field emission in SRF cavities can be captured and accelerated in the linac up to hundreds MeV before they removed by focusing magnets. Lost dark current electrons interact with the materials surrounding SRF cavities and magnets, produce electromagnetic showers and contribute to the radiation in the linac tunnel. In this paper we present a model of dark current in a linac based on TESLA cavities. We show preliminary results of the simulation applied to ILC main linac.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPJE081
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THPF124	Energy Deposition and Radiological Studies for the LBNF Hadron Absorber	4007
	I.L. Rakhno, N.V. Mokhov, I.S. Tropin Fermilab, Batavia, Illinois, USA Y.I. Eidelman Euclid TechLabs, LLC, Solon, Ohio, USA
	Funding: This work is supported by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy. Results of optimization energy deposition and radiological studies performed for the LBNF hadron absorber system are presented. The model of the LBNF complex starting from the beam extraction from the Main Injector and primary beam line through the pion-production target, focusing horns, target chase, decay channel, hadron absorber system with its beam instrumentation and civil infrastructure – all with corresponding radiation shielding – was developed using the ROOT-based geometry option in the MARS15 code. Both normal operation and accidental conditions were studied for the 120-GeV proton beam at 2.4 MW. Various design options were considered, in particular: (i) the absorber mask material and shape; (ii) the beam spoiler material and size; (iii) sculpted core aluminum blocks; (iv) various configurations of the core and its shielding and (v) numerous modifications of the overall system configurations. These helped find the optimal design solution for the absorber lifetime and radiation levels in the service building and environment to be within the design goals with an adequate safety margin.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF124
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Model of Dark Current in SRF Linac

1834

A.I. Sukhanov, A. Saini, N. Solyak, I.S. Tropin
Fermilab, Batavia, Illinois, USA

Currently, few linacs based on 9-cell TESLA-type SRF cavities are being designed or bult, including XEFL, LCLS-II and ILC. Dark current electron generated by field emission in SRF cavities can be captured and accelerated in the linac up to hundreds MeV before they removed by focusing magnets. Lost dark current electrons interact with the materials surrounding SRF cavities and magnets, produce electromagnetic showers and contribute to the radiation in the linac tunnel. In this paper we present a model of dark current in a linac based on TESLA cavities. We show preliminary results of the simulation applied to ILC main linac.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPJE081

Export •

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

THPF124

Energy Deposition and Radiological Studies for the LBNF Hadron Absorber

4007

I.L. Rakhno, N.V. Mokhov, I.S. Tropin
Fermilab, Batavia, Illinois, USA
Y.I. Eidelman
Euclid TechLabs, LLC, Solon, Ohio, USA

Funding: This work is supported by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy.
Results of optimization energy deposition and radiological studies performed for the LBNF hadron absorber system are presented. The model of the LBNF complex starting from the beam extraction from the Main Injector and primary beam line through the pion-production target, focusing horns, target chase, decay channel, hadron absorber system with its beam instrumentation and civil infrastructure – all with corresponding radiation shielding – was developed using the ROOT-based geometry option in the MARS15 code. Both normal operation and accidental conditions were studied for the 120-GeV proton beam at 2.4 MW. Various design options were considered, in particular: (i) the absorber mask material and shape; (ii) the beam spoiler material and size; (iii) sculpted core aluminum blocks; (iv) various configurations of the core and its shielding and (v) numerous modifications of the overall system configurations. These helped find the optimal design solution for the absorber lifetime and radiation levels in the service building and environment to be within the design goals with an adequate safety margin.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF124

Export •

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