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Instrumentation for Reactions and Astrophysics

Instrumentation for Reactions and Astrophysics. Orruba in Gammasphere Active Target arrays: ANASEN AT-TPC Gas-filled spectrograph Transfer-reactions need recoil separator to establish subsequent particle-decay Low-energy n-detector for (d,n). ORRUBA+GS.

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Instrumentation for Reactions and Astrophysics

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  1. Instrumentation for Reactions and Astrophysics • Orruba in Gammasphere • Active Target arrays: ANASEN AT-TPC • Gas-filled spectrograph • Transfer-reactions need recoil separator to establish subsequent particle-decay • Low-energy n-detector for (d,n)

  2. ORRUBA+GS • System for study of transfer reactionswith CARIBUbeams • (d,p) as probeof shell structuren-rich nuclei • Investigate (d,pg) as surrogate for (n,g)

  3. Recoil detector • Many astrophysicalexperiments want to use (d,n)and (d,p), (3He,d)transfer reactions • Detect small decay branches p vs g and p vs alpha • Can be replaced by • heavy recoil detection, particle id • RF-sweeper for HELIOS => reduce beam contam.

  4. Active-Target systemsfor transfer-reactions AT-TPC: multi-particle tracking in magnetic field spectroscopy ANASEN: Active Target+tracking+Silicon+CsI, no magnetic field

  5. Gas-filled Separators: Largest Acceptance for “normal kinematics reactions” • Superconductingcoils, more compacthigher efficiency,resolution SGS DvDh SGS Dv

  6. Mass measurements for SHE Separate Stop Mass-separate

  7. 15 cm n p 25Al 25Al 26Si CD2 LE Neutron-Detector • Inverse Kinematics (d,n) reactions:low-energy (E=100-300 keV) neutron detector needed(plastic or 6Li-based)

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