3 research outputs found
Conceptual Design of Rapid Circular Particle Accelerator Using High-Gradient Resonant Cavities with Fixed Frequency
A new high-energy particle accelerator with static combined type of magnetic field and high-gradient resonant cavities is introduced for muon acceleration up to 300 MeV and proton acceleration up to 400 MeV. The accelerator concept is expected to realize Mpps-class rapid cycling high-energy particle acceleration in circular particle accelerators. Conceptual designs of the circular accelerator are discussed with an emphasis on short lifetime particles. The fundamental concept of particle acceleration and the related practical issues, which should be discussed when designing the accelerators, are described as well
The Subaru/XMM-Newton Deep Survey (SXDS) - II. Optical Imaging and Photometric Catalogs
We present multi-waveband optical imaging data obtained from observations of
the Subaru/XMM-Newton Deep Survey (SXDS). The survey field, centered at
R.A.=02:18:00, decl.=-05:00:00, has been the focus of a wide range of
multi-wavelength observing programs spanning from X-ray to radio wavelengths. A
large part of the optical imaging observations are carried out with Suprime-Cam
on Subaru Telescope at Mauna Kea in the course of Subaru Telescope Observatory
Projects. This paper describes our optical observations, data reduction and
analysis procedures employed, and the characteristics of the data products. A
total area of 1.22 sqdeg is covered in five contiguous sub-fields, each of
which corresponds to a single Suprime-Cam field of view (34'x27'), in five
broad-band filters B, V, Rc, i', z' to the depths of B=28.4, V=27.8, Rc=27.7,
i'=27.7 and z'=26.6 (AB, 3-sigma, 2-arcsec aperture). The data are reduced and
compiled into five multi-waveband photometric catalogs, separately for each
Suprime-Cam pointing. The i'-band catalogs contain about 900,000 objects,
making the SXDS catalogs one of the largest multi-waveband catalogs in
corresponding depth and area coverage. The SXDS catalogs can be used for an
extensive range of astronomical applications such as the number density of the
Galactic halo stars to the large scale structures at the distant universe. The
number counts of galaxies are derived and compared with those of existing deep
extragalactic surveys. The optical data, the source catalogs, and configuration
files used to create the catalogs are publicly available via the SXDS web page
(http://www.naoj.org/Science/SubaruProject/SXDS/index.html)Comment: 55 pages, 22 figures, 9 tables, accepted by ApJS, a higher-resolution
version is available at http://step.mtk.nao.ac.jp/sxds