نتایج جستجو برای: beta beam
تعداد نتایج: 299514 فیلتر نتایج به سال:
We have implemented a spectral motional Stark effect diagnostic for spatially localized measurements of magnetic field on the Gas-Dynamic Trap ~GDT! magnetic mirror device. A 7 A, 40 keV diagnostic neutral hydrogen beam was focused to a current density of 0.25 A/cm in the measurement volume, allowing achievement of a radial resolution of 4.5 cm by viewing the beam at 45° with a well-defined lig...
The low-energy demonstration accelerator (LEDA) is an operational 6.7-MeV, 100-mA, cw proton accelerator consisting of an injector, radio-frequency quadrupole (RFQ), and all associated integration equipment. Achieving this unprecedented level of performance (670kW of beam power) from an RFQ required a number of design innovations. We highlight a number of those more-significant technical advanc...
Neutron guides are used to transport slow neutrons from sources experiments. Conventional neutron supermirror use alternating thin layers based on nickel and titanium. Due the magnetic properties of nickel, their reflection spin-dependent, in particular when exposed high fields. Motivated by requirements precision experiments beta decay, we present novel supermirrors copper titanium, which pres...
The Collinear Resonance Ionization Spectroscopy (CRIS) experiment at ISOLDE, CERN, uses laser radiation to stepwise excite and ionize an atomic beam for the purpose of ultra-sensitive detection of rare isotopes, and hyperfine-structure measurements. The technique also offers the ability to purify an ion beam that is heavily contaminated with radioactive isobars, including the ground state of an...
We demonstrate that accurate values of mass-per-length (MPL), which serve as strong constraints on molecular structure, can be determined for amyloid fibrils by quantification of intensities in dark-field electron microscope images obtained in the tilted-beam mode of a transmission electron microscope. MPL values for fibrils formed by residues 218-289 of the HET-s fungal prion protein, for 2-fo...
Initial experiments which have explored the physics of the underdense (blowout) regime of the plasma wakefield accelerator (PWFA) at the Argonne Wakefield Accelerator facility are reported. In this regime, the relativistic electron beam is denser than the plasma, causing the beam channel to completely rarefy, and leaving a high quality accelerating region which also contains a uniform ion colum...
The high current driver accelerator of the SPIRAL 2 project uses independently phased SC resonators working at 88 MHz. Solid state power amplifiers equipped with circulators are foreseen to drive the cavities with widely ranging conditions of beam loading. These power devices are developed by industrial companies and a test bench has been studied and manufactured to test the prototypes, to comm...
The $\ensuremath{\beta}$ decay of $^{101,102}\mathrm{Zr}$ and $^{109}\mathrm{Tc}$ was studied using the technique total absorption spectroscopy. experiment performed at National Superconducting Cyclotron Laboratory Summing NaI(Tl) (SuN) detector in first-ever application spectroscopy with a fast beam produced via projectile fragmentation. $\ensuremath{\beta}$-decay feeding intensity Gamow-Telle...
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