Abstracts Brochure - CERN

MOPCH — Poster Session 26-Jun-06 16:00 - 18:00
LHC@FNAL: A Remote Access Center for the LHC at Fermilab
A facility is being designed at Fermilab to
help people contribute to the Large Hadron
Collider (LHC) effort at CERN. This facility
is called LHC@FNAL. The purpose of
LHC@FNAL is to permit members of the
E.S. McCrory, K.B. Biery, E.G. Gottschalk, S.G. Gysin, E.R. Harms,
S.K. Kunori, M.J. Lamm, K.M. Maeshima, P.M. McBride, A.J.
Slaughter (Fermilab) M. Lamont (CERN)
LHC community in North America contribute their expertise to LHC activities at CERN, and to assist CERN with
the commissioning and operation of the LHC accelerator and CMS experiment. As a facility, LHC@FNAL has three
primary functions: 1) To provide access to information in a manner that is similar to what is available in control
rooms at CERN, and to enable members of the LHC community to participate remotely in LHC and CMS activities.
2) To serve as a (bidirectional) communications conduit between CERN and members of the LHC community located
in North America. 3. To allow visitors to Fermilab to see firsthand how research is progressing at the LHC. Visitors
will be able to see current LHC activities, and will be able to see how future international projects in particle physics
can benefit from active participation in projects at remote locations. LHC@FNAL is expected to contribute to a wide
range of activities for the CMS experiment and for the LHC accelerator.
Performance and Capabilities of the NASA Space Radiation Laboratory at BNL
The NASA Space Radiation Laboratory
(NSRL) at BNL has been in operation since
2003. The first commissioning of the facility
took place beginning in October 2002 and the
facility became operational in July 2003. The
K.A. Brown, L. Ahrens, I.-H. Chiang, C.J. Gardner, D.M. Gassner, L.
Hammons, M. Harvey, J. Morris, A. Rusek, P. Sampson, M. Sivertz,
N. Tsoupas, K. Zeno (BNL)
facility was constructed in collaboration with NASA for the purpose of performing radiation effect studies for the
NASA space program. The NSRL is capable of making use of protons and heavy ions in the range of 0.05 to 3 GeV/n
slow extracted from BNL’s AGS Booster. It is also capable of making use of protons and heavy ions fast extracted from
the AGS Booster. Many different beam conditions have been produced for experiments at NSRL, including very low
intensity In this report we will describe the facility and its’ performance over the eight experimental run periods that
have taken place since it became operational. We will also describe the current and future capabilities of the NSRL.
Polarized Proton Acceleration in the AGS with Two Helical Partial Snakes
Acceleration of polarized protons in the energy
range of 5 to 25 GeV is particularly difficult:
the depolarizing resonances are strong
enough to cause significant depolarization
but full Siberian snakes cause intolerably
large orbit excursions and it is not feasible
H. Huang, L. Ahrens, M. Bai, A. Bravar, K.A. Brown, E.D. Courant,
C.J. Gardner, J. Glenn, A.U. Luccio, W.W. MacKay, C. Montag, V.
Ptitsyn, T. Roser, S. Tepikian, N. Tsoupas, J. Wood, K. Yip, A. Zelenski,
K. Zeno (BNL) F. Lin (IUCF) M. Okamura, J. Takano (RIKEN)
in the AGS since straight sections are too short. Recently, two helical partial snakes with double pitch design have
been built and installed in the AGS. With careful setup of optics at injection and along the ramp, this combination can
eliminate intrinsic and imperfection depolarizing resonances encountered during acceleration. This paper presents
the accelerator setup and preliminary results. The effect of horizontal intrinsic resonances in the presence of two
partial snakes are also discussed.
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