A Superconducting Magnet UCN Trap for Precise Neutron Lifetime Measurements.
Finite-element methods along with Monte Carlo simulations were used to design a magnetic storage device for ultracold neutrons (UCN) to measure their lifetime. A setup was determined which should make it possible to confine UCN with negligible losses and detect the protons emerging from β-decay with high efficiency: stacked superconducting solenoids create the magnetic storage field, an electrostatic extraction field inside the storage volume assures high proton collection efficiency. Alongside with the optimization of the magnetic and electrostatic design, the properties of the trap were investigated through extensive Monte Carlo simulation.
Technical University Munich, Physics Department E 18, D-85748 Garching, Germany.
R
R
Picker
Technical University Munich, Physics Department E 18, D-85748 Garching, Germany.
I
I
Altarev
Technical University Munich, Physics Department E 18, D-85748 Garching, Germany.
J
J
Bröcker
Technical University Munich, Physics Department E 18, D-85748 Garching, Germany.
E
E
Gutsmiedl
Technical University Munich, Physics Department E 18, D-85748 Garching, Germany.
J
J
Hartmann
Technical University Munich, Physics Department E 18, D-85748 Garching, Germany.
A
A
Müller
Technical University Munich, Physics Department E 18, D-85748 Garching, Germany.
S
S
Paul
Technical University Munich, Physics Department E 18, D-85748 Garching, Germany.
W
W
Schott
Technical University Munich, Physics Department E 18, D-85748 Garching, Germany.
U
U
Trinks
Technical University Munich, Physics Department E 18, D-85748 Garching, Germany.
O
O
Zimmer
Monte Carlo simulation; UCN; beta-decay; magnetic storage; neutron lifetime; superconductivity