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Title: Design of SECAR a recoil mass separator for astrophysical capture reactions with radioactive beams

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
 [1];  [1];  [1];  [2];  [1];  [3];  [3];  [3];  [3];  [3];  [4];  [3];  [5];  [6];  [5];  [5];  [7];  [8];  [9];  [9]
  1. Univ. of Notre Dame, Notre Dame, IN (United States)
  2. Univ. of Notre Dame, Notre Dame, IN (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Michigan State Univ., East Lansing, MI (United States)
  4. Michigan State Univ., East Lansing, MI (United States); Ionetix Corp., Lansing, MI (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Notre Dame, Notre Dame, IN (United States)
  7. Louisiana State Univ., Baton Rouge, LA (United States)
  8. Colorado School of Mines, Golden, CO (United States)
  9. Argonne National Lab. (ANL), Argonne, IL (United States)
+ Show Author Affiliations

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.

Research Organization:
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 Organization:
University of Notre Dame; National Science Foundation (NSF); Michigan State University; USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC02-06CH11357; FG02-97ER41033; AC52-06NA25396; AC05-00OR22725; SC0014384; FG02-97ER41041; C52-06NA25396
OSTI ID:
1402079
Alternate ID(s):
OSTI ID: 1430018; OSTI ID: 1480618; OSTI ID: 1549319; OSTI ID: 1658889; OSTI ID: 1658937
Report Number(s):
LA-UR-17-30596; 134670; TRN: US1703235
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 877, Issue C; ISSN 0168-9002
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Cited By (3)

Nuclear physics of the outer layers of accreting neutron stars journal July 2018
A UO2-based salt target for rapid isolation of fission products journal January 2019
Nuclear Physics of the Outer Layers of Accreting Neutron Stars text January 2018

Figures / Tables (21)

Table 1.(p. 6)table Table 1.
Table 2.(p. 8)table Table 2.
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Figure 1.(p. 23)figure Figure 1.
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Figure 10.(p. 29)figure Figure 10.
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Figure 11.(p. 30)figure Figure 11.
Figure 12.(p. 31)figure Figure 12.
Figure 13.(p. 32)figure Figure 13.
Figure 14.(p. 33)figure Figure 14.

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