Design of SECAR a recoil mass separator for astrophysical capture reactions with radioactive beams
Abstract
A recoil mass separator SECAR has been designed for the purpose of studying low-energy (p,γ) and (α,γ) reactions in inverse kinematics with radioactive beams for masses up to about A = 65. Their reaction rates are of importance for our understanding of the energy production and nucleosynthesis during explosive hydrogen and helium burning. The radiative capture reactions take place in a windowless hydrogen or He gas target at the entrance of the separator, which consists of four Sections. The first Section selects the charge state of the recoils. The second and third Sections contain Wien Filters providing high mass resolving power to separate efficiently the intense beam from the few reaction products. In the following fourth Section, the reaction products are guided into a detector system capable of position, angle and time-of-flight measurements. In order to accept the complete kinematic cone of recoil particles including multiple scattering in the target in the center of mass energy range of 0.2 MeV to 3.0 MeV, the system must have a large polar angle acceptance of ± 25 mrad. This requires a careful minimization of higher order aberrations. Furthermore, the present system will be installed at the NSCL ReA3 accelerator and will bemore »
- Authors:
-
- Univ. of Notre Dame, Notre Dame, IN (United States)
- Univ. of Notre Dame, Notre Dame, IN (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Michigan State Univ., East Lansing, MI (United States)
- Michigan State Univ., East Lansing, MI (United States); Ionetix Corp., Lansing, MI (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Notre Dame, Notre Dame, IN (United States)
- Louisiana State Univ., Baton Rouge, LA (United States)
- Colorado School of Mines, Golden, CO (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); University of North Carolina, Chapel Hill, NC (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Los Alamos Argonne National Laboratory (ANL), Argonne, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- University of Notre Dame; National Science Foundation (NSF); Michigan State University; USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1402079
- Alternate Identifier(s):
- OSTI ID: 1430018; OSTI ID: 1480618; OSTI ID: 1549319; OSTI ID: 1658889; OSTI ID: 1658937
- Report Number(s):
- LA-UR-17-30596
Journal ID: ISSN 0168-9002; 134670; TRN: US1703235
- Grant/Contract Number:
- AC02-06CH11357; FG02-97ER41033; AC52-06NA25396; AC05-00OR22725; SC0014384; FG02-97ER41041; C52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Additional Journal Information:
- Journal Volume: 877; Journal Issue: C; Journal ID: ISSN 0168-9002
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Radiative proton and alpha capture; Recoil mass separator; Wien Filter; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Berg, G. P. A., Couder, M., Moran, M. T., Smith, K., Wiescher, M., Schatz, H., Hager, U., Wrede, C., Montes, F., Perdikakis, G., Wu, X., Zeller, A., Smith, M. S., Bardayan, D. W., Chipps, K. A., Pain, S. D., Blackmon, J., Greife, U., Rehm, K. E., and Janssens, R. V. F. Design of SECAR a recoil mass separator for astrophysical capture reactions with radioactive beams. United States: N. p., 2017.
Web. doi:10.1016/j.nima.2017.08.048.
Berg, G. P. A., Couder, M., Moran, M. T., Smith, K., Wiescher, M., Schatz, H., Hager, U., Wrede, C., Montes, F., Perdikakis, G., Wu, X., Zeller, A., Smith, M. S., Bardayan, D. W., Chipps, K. A., Pain, S. D., Blackmon, J., Greife, U., Rehm, K. E., & Janssens, R. V. F. Design of SECAR a recoil mass separator for astrophysical capture reactions with radioactive beams. United States. https://doi.org/10.1016/j.nima.2017.08.048
Berg, G. P. A., Couder, M., Moran, M. T., Smith, K., Wiescher, M., Schatz, H., Hager, U., Wrede, C., Montes, F., Perdikakis, G., Wu, X., Zeller, A., Smith, M. S., Bardayan, D. W., Chipps, K. A., Pain, S. D., Blackmon, J., Greife, U., Rehm, K. E., and Janssens, R. V. F. Mon .
"Design of SECAR a recoil mass separator for astrophysical capture reactions with radioactive beams". United States. https://doi.org/10.1016/j.nima.2017.08.048. https://www.osti.gov/servlets/purl/1402079.
@article{osti_1402079,
title = {Design of SECAR a recoil mass separator for astrophysical capture reactions with radioactive beams},
author = {Berg, G. P. A. and Couder, M. and Moran, M. T. and Smith, K. and Wiescher, M. and Schatz, H. and Hager, U. and Wrede, C. and Montes, F. and Perdikakis, G. and Wu, X. and Zeller, A. and Smith, M. S. and Bardayan, D. W. and Chipps, K. A. and Pain, S. D. and Blackmon, J. and Greife, U. and Rehm, K. E. and Janssens, R. V. F.},
abstractNote = {A recoil mass separator SECAR has been designed for the purpose of studying low-energy (p,γ) and (α,γ) reactions in inverse kinematics with radioactive beams for masses up to about A = 65. Their reaction rates are of importance for our understanding of the energy production and nucleosynthesis during explosive hydrogen and helium burning. The radiative capture reactions take place in a windowless hydrogen or He gas target at the entrance of the separator, which consists of four Sections. The first Section selects the charge state of the recoils. The second and third Sections contain Wien Filters providing high mass resolving power to separate efficiently the intense beam from the few reaction products. In the following fourth Section, the reaction products are guided into a detector system capable of position, angle and time-of-flight measurements. In order to accept the complete kinematic cone of recoil particles including multiple scattering in the target in the center of mass energy range of 0.2 MeV to 3.0 MeV, the system must have a large polar angle acceptance of ± 25 mrad. This requires a careful minimization of higher order aberrations. Furthermore, the present system will be installed at the NSCL ReA3 accelerator and will be used with the much higher beam intensities of the FRIB facility when it becomes available.},
doi = {10.1016/j.nima.2017.08.048},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 877,
place = {United States},
year = {Mon Sep 25 00:00:00 EDT 2017},
month = {Mon Sep 25 00:00:00 EDT 2017}
}
Web of Science
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