Presentation on theme: "Gas-filled separator for nuclear structure experiments at ATLAS Darek Seweryniak, ANL."— Presentation transcript:
Gas-filled separator for nuclear structure experiments at ATLAS Darek Seweryniak, ANL
Physics HK distributions in heavy nuclei (GS) In-beam spectroscopy of heavy nuclei (GS) Isomers and decays of heavy nuclei (focal plane) Super-heavy searches (focal plane) Fast activities in proton-rich nuclei Gas-cell and traps …
Principle of Operation B i = p/q i B = p/q ave vacuumgas q ave ~ (v/v 0 ) Z 1/3 B ~ 0.0227 A/Z 1/3 [Tm]
Vacuum vs Gas-Filled M/Q measurement physical separation good beam suppression high efficiency short flight path low efficiency long flight path no mass resolution no separation poor beam suppression Truly complementary devices!
Parameters of the Existing Gas-Filled Separators SASSYER DvQhDv 5 2.2 2.4 He RITU QvDQhQv 10 2.2 4.7 He BGS QvDhD 45 2.5 4.7 He Dubna GFRS DQhQv 10 3.1 4.3 H 2 TASCA DQhQv 13 2.4 3.5 He separator configuration [msr] B max [Tm] L [m] gas
Important design parameters Solid angle Scattered beam suppression Suppression of transfer products Manageable focal plane size State-of-the-art implantation station – already available Efficient coupling to a 4 Ge array (movable)