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Radiation shielding for the Main Injector collimation system

Description: The results of Monte Carlo radiation shielding studies performed with the MARS15 code for the Main Injector collimation system are presented and discussed. A Proton Plan was developed recently at Fermilab for the benefit of the existing neutrino programs as well as to increase anti-proton production for the Tevatron programs [1]. As a part of the plan, the intensity of proton beams in the Main Injector (MI) should be increased by means of slip-stacking injection. In order to localize beam loss … more
Date: December 1, 2007
Creator: Rakhno, Igor
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

beam loss scenarios for MuCool Test Area

Description: The MuCool Test Area (MTA) is an intense primary beam facility derived directly from the Fermilab Linac to test heat deposition and other technical concerns associated with the liquid hydrogen targets, gas-filled RF cavities, and other apparatus being developed to cool intense, large-emittance muon beams. In this study the results of Monte Carlo modeling of several beam loss scenarios are presented. The MTA facility was designed to test targets and other muon cooling apparatus using the intense… more
Date: August 1, 2010
Creator: Rakhno, Igor & Johnstone, Carol
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiation shielding for the Fermilab Vertical Cavity Test Facility

Description: The results of radiation shielding studies for the vertical test cryostat VTS1 at Fermilab performed with the codes FISHPACT and MARS15 are presented and discussed. The analysis is focused on operations with two RF cavities in the cryostat. The vertical cavity test facility (VCTF) for superconducting RF cavities in Industrial Building 1 at Fermilab has been in operation since 2007. The facility currently consists of a single vertical test cryostat VTS1. Radiation shielding for VTS1 was designed… more
Date: March 1, 2010
Creator: Ginsburg, Camille & Rakhno, Igor
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Shielding Studies for Superconducting RF Cavities at Fermilab

Description: A semi-empirical method that allows us to predict intensity of generated field emission in superconducting RF cavities is described. Spatial, angular and energy distributions of the generated radiation are calculated with the FISHPACT code. The Monte Carlo code MARS15 is used for modeling the radiation transport in matter. A comparison with dose rate measurements performed in the Fermilab Vertical Test Facility for ILC-type cavities with accelerating gradients up to 35 MV/m is presented as well. more
Date: July 20, 2010
Creator: Ginsburg, Camille & Rakhno, Igor
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Diagnostic beam absorber in Mu2e beam line

Description: Star density, hadron flux, and residual dose distributions are calculated around the {mu}2e diagnostic beam absorber. Corresponding surface and ground water activation, and air activation are presented as well.
Date: March 1, 2011
Creator: Rakhno, Igor
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Optimization Studies for Radiation Shielding of a Superconducting RF Cavity Test Facility

Description: Test facilities for high-gradient superconducting RF cavities must be shielded for particle radiation, which is generated by field emitted electrons in the cavities. A major challenge for the shielding design is associated with uncertainty in modeling the field emission. In this work, a semi-empirical method that allows us to predict the intensity of the generated field emission is described. Spatial, angular and energy distributions of the generated radiation are calculated with the FISHPACT c… more
Date: July 9, 2010
Creator: Ginsburg, Camille M. & Rakhno, Igor
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiation damage due to electromagnetic showers

Description: Radiation-induced damage due to atomic displacements is essential to correctly predict the behavior of materials in nuclear reactors and at charged-particle accelerators. Traditionally the damage due to hadrons was of major interest. The recent increased interest in high-energy lepton colliders gave rise to the problem of prediction of radiation damage due to electromagnetic showers in a wide energy range--from a few hundred keV and up to a few hundred GeV. The report describes results of an el… more
Date: May 1, 2008
Creator: Rakhno, Igor; Mokhov, Nikolai & Striganov, Sergei
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiation shielding calculations for MuCool test area at Fermilab

Description: The MuCool Test Area (MTA) is an intense primary beam facility derived directly from the Fermilab Linac to test heat deposition and other technical concerns associated with the liquid hydrogen targets being developed for cooling intense muon beams. In this shielding study the results of Monte Carlo radiation shielding calculations performed using the MARS14 code for the MuCool Test Area and including the downstream portion of the target hall and berm around it, access pit, service building, and… more
Date: May 26, 2004
Creator: Rakhno, Igor & Johnstone, Carol
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simulation of nucleon elastic scattering in the MARS14 code system

Description: Correct modeling of nucleon elastic scattering is of special importance in many applications at high energy accelerators, such as deep penetration, beam loss and collimation studies. In present paper, the work performed to update the MARS elastic scattering model at E < 5 GeV is described. Modern evaluated nuclear data as well as fitting formulae are used in the new model. For protons as projectiles, Coulomb scattering and Coulomb-nuclear interference are taken into account in addition to nu… more
Date: November 26, 2001
Creator: Rakhno, Igor L.; Mohkov, N.; Sukhovitski, E. & Chiba, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Design, Installation, and Initial Commissioning of the MTA Beamline

Description: A new experimental area designed to develop, test and verify muon ionization cooling apparatus using the 400-MeV Fermilab Linac proton beam has been fully installed and is presently being commissioned. Initially, this area was used for cryogenic tests of liquid-hydrogen absorbers for the MUCOOL R&D program and, now, for high-power beam tests of absorbers, high-gradient rf cavities in the presence of magnetic fields (including gas-filled cavities), and other prototype muon-cooling apparatus.… more
Date: May 1, 2010
Creator: Moore, Craig D.; Anderson, John; Garcia, Fernanda; Gerardi, Michael; Johnstone, Carol; Kobilarcik, Thomas et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Design and commissioning of Fermilab's vertical test stand for ILC SRF cavities.

Description: As part of its ILC program, Fermilab is developing a facility for vertical testing of SRF cavities. It operates at a nominal temperature of 2K, using a cryoplant that can supply LHe in excess of 20g/sec and provide bath pumping capacity of 125W at 2K. The below-grade cryostat consists of a vacuum vessel and LHe vessel, equipped with magnetic shielding to reduce the ambient magnetic field to <10mG. Internal fixed and external movable radiation shielding ensures that exposure to personnel is m… more
Date: June 1, 2007
Creator: Ozelis, Joseph P.; Carcagno, Ruben; Ginsburg, Camille M.; Huang, Yuenian; Norris, Barry; Peterson, Thomas et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fermilab Main Injector Collimation Systems: Design, Commissioning and Operation

Description: The Fermilab Main Injector is moving toward providing 400 kW of 120 GeV proton beams using slip stacking injection of eleven Booster batches. Loss of 5% of the beam at or near injection energy results in 1.5 kW of beam loss. A collimation system has been implemented to localize this loss with the design emphasis on beam not captured in the accelerating RF buckets. More than 95% of these losses are captured in the collimation region. We will report on the construction, commissioning and operatio… more
Date: May 1, 2009
Creator: Brown, Bruce; Adamson, Philip; Capista, David; Drozhdin, A.I.; Johnson, David E.; Kourbanis, Ioanis et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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