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Personal extrapolation of CDF test beam use to the SSC

Description: The author's personal experience in test beam usage at CDF is used to predict SSC needs at the point of turn-on. It is concluded that the test beam demand will reflect the scale of effort involved in SSC detectors rather than the total number of them. Provision for later expansion is recommended. It is also recommended that the test beam facilities, as well as detector electronics, should reflect the available dynamic range; particularly, a single high energy beam derived from the SSC could be … more
Date: June 23, 1986
Creator: Nodulman, L.
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Partner: UNT Libraries Government Documents Department
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Vacuum technology issues for the SSC (Superconducting Super Collider)

Description: The Superconducting Super Collider, to be built in Texas, will provide an energy of 40 TeV from colliding proton beams. This energy is twenty times higher than currently available from the only other cryogenic collider, the Fermilab Tevatron, and will allow experiments that can lead to a better understanding of the fundamental properties of matter. The energy scale and the size of the new machine pose intriguing challenges and opportunities for the its vacuum systems. The discussion will includ… more
Date: October 23, 1989
Creator: Joestlein, H.
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Partner: UNT Libraries Government Documents Department
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Collider detector beam line test table: a structural analysis

Description: The apparatus which sweeps calorimeter and endwall modules through the beam during testing is called a beam line test table. Because of rather stringent requirements for the physical positioning of the modules an analysis is done here to determine the modifications to the current test table design which will minimize deflections of the table under load.
Date: December 23, 1983
Creator: Leininger, M.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Status of the NSLS-II Injection System Design

Description: The NSLS-II is a new ultra-bright 3rd generation 3 GeV light source that will be built at Brookhaven National Laboratory. Its design is well under way. The requirements for the compact injector complex, which will continuously provide 3 GeV electrons for top-off injection into the storage ring, are demanding: high reliability, relatively high charge and low losses. The injector consists of a linear accelerator, a full-energy booster, as well as transport lines, and an injection straight section… more
Date: June 23, 2008
Creator: Shaftan,T.
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Partner: UNT Libraries Government Documents Department
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Integrated Global Orbit Feedback with Slow and Fast Correctors

Description: The NSLS-II Light Source, which is planned to be built at Brookhaven National Laboratory, provides users with ultra-bright synchrotron radiation sources and is designed for horizontal beam emittances < 1 nm. Full utilization of the very small emittances and beam sizes requires sub-micron orbit stability in the storage ring. This can be provided by means of a wide bandwidth orbit feedback system. Traditional approach is to utilize a uniform set of fast correctors or use two separate systems w… more
Date: June 23, 2008
Creator: Pinayev,I.
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Partner: UNT Libraries Government Documents Department
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Ultra Low Emittance Light Sources

Description: This paper outlines the special issues for reaching sub-nm emittance in a storage ring. Effects of damping wigglers, intra-beam scattering and lifetime issues, dynamic aperture optimization, control of optics, and their interrelations are covered in some detail. The unique choices for the NSLS-II are given as one example.
Date: June 23, 2008
Creator: Bengtsson,J.
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Partner: UNT Libraries Government Documents Department
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Ground Motion Studies at NSLS II

Description: In this study, an array of vibration measurements at the undisturbed NSLS II site has been performed in order to establish the 'green-field' vibration environment and its spectral characteristics. The interaction of the green-field vibration environment with the NSLS II accelerator structure and the quantification of the storage ring vibration, both in terms of amplitude and spectral content have been assessed through a state-of-the-art wave propagation and scattering analysis. This paper focus… more
Date: June 23, 2008
Creator: Simos,N.; Fallier, M. & Amick, H.
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Partner: UNT Libraries Government Documents Department
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Research and Development Program on Beam Position Monitors for NSLS-II Project

Description: The NSLS-II Light Source, which is planned to be built at Brookhaven National Laboratory, is designed for horizontal emittances below 1 nm and will provide users with ultra-bright synchrotron radiation sources. In order to utilize fully the very small emittances and electron beam sizes, submicron stability of the electron orbit in the storage ring needs to be provided. This can only be achieved with high stability beam position monitors (BPM). The research program presently carried is aimed for… more
Date: June 23, 2008
Creator: Pinayev,I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The MERIT High-Power Target Experiment at the CERN PS.

Description: The MERIT experiment was designed as a proof-of-principle test of a target system based on a free mercury jet inside a 15-T solenoid that is capable of sustaining proton beam powers of up to 4 MW. The experiment was run at CERN in the fall of 2007. We describe the results of the tests and their implications. Plans are being discussed for possible future machines which can deliver proton beams with multi-MW beam powers. A prominent application for these powerful beams will be to produce intense … more
Date: June 23, 2008
Creator: Kirk, H. G.; Tsang, T.; Efthymiopoulos, I.; Fabich, A.; Haug, F.; Lettry, J. et al.
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Partner: UNT Libraries Government Documents Department
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On the Optimal Number of Eigenvectors for Orbit Correction

Description: The singular value decomposition method is widely used for orbit correction in the storage rings. It is a powerful tool for inverting of the usually rectangular response matrices, which usually have rectangular form. Another advantage is flexibility to choose number of eigenvectors for calculation of required strengths of orbit correctors. In particular, by reduction in number of eigenvectors one can average over ensemble the noise in the beam position monitors. A theoretical approach as well a… more
Date: June 23, 2008
Creator: Pinayev,I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Physics at the superconducting supercollider

Description: Summary of lectures presented in the Shell Seminar Series at the national convention of the National Science Teachers Association, April 7-10, 1988. Topics covered are: The Standard model, symmetry breaking, the superconducting supercollider, physics at the TEV scale, and the early universe.
Date: May 23, 1988
Creator: Gaillard, M. K.
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Partner: UNT Libraries Government Documents Department
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T839 fiber tracking transporter at New Muon Lab

Description: A darkbox and its transporter have been designed for T839 fiber tracking tests. The darkbox is 3.35 m {times} 0.76 m {times} 0.25 m (1{center dot}w{center dot}h) and contains a scintillating fiber ribbon suspension system and mechanical hardware to support the readout electronics. The transporter provides 3.0 m of horizontal motion transverse to the beam for linear scans of fiber characteristics. In addition, 70 degrees of rotation about a vertical axis is provided to simulate tracking of parti… more
Date: October 23, 1991
Creator: Krider, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Determination of the linear aperture of the SSC (Superconducting Supercollider) clustered lattice used for the conceptual design report

Description: A study is made of the linear aperture for the clustered lattice used for the SSC Conceptual Design Report. Random multipole errors are included in all magnetic elements including the insertion dipoles and quadrupoles. Based on the concept of smear, the linear aperture is equal to the dynamic aperture in the range -0.1 less than or equal to ..delta..P/P less than or equal to 0.03%. Strong coupling for ..delta..P/P > 0% produces large smears. A variation of the smear parameter that is insensitiv… more
Date: June 23, 1986
Creator: Dell, G.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Determination of the angular and energy dependence of hard constituent scattering from. pi. /sup 0/ pair events at the CERN intersecting storage rings

Description: We present data on proton-proton collisions, obtained at the CERN Intersecting Storage Rings, in which two roughly back-to-back ..pi../sup 0/'s of high transverse momentum (p/sub T/) were produced. The angular distribution of the dipion axis relative to the collision axis is found to be independent of both the effective mass m of the dipion system and the centre-of-mass energy ..sqrt..s of the proton-proton collision. The cross-sections dsigma/dm at the two values of ..sqrt..s satisfy a scaling… more
Date: August 23, 1982
Creator: Angelis, A. L. S.; Besch, H. J. & Blumenfeld, B. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aperture studies with Patricia and Racetrack on simple lattices containing SSC dipoles

Description: The PATRICIA and RACETRACK particle tracking programs have been compared by tracking on a simple lattice. The dynamic aperture was found to decrease as the number of passes through the lattice per run increased from 20 to approx. 300, and it remained constant for longer runs. The dynamic apertures found by the two programs are consistent. The dependence of the dynamic aperture on horizontal tune near a decapole resonance was investigated. RACETRACK and PATRICIA showed decreases in the aperture … more
Date: June 23, 1984
Creator: Dell, G.F.; Leemann, B. & Willeke, F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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BEAM CONTAINMENT SYSTEM FOR NSLS-II

Description: The shielding design for the NSLS-II will provide adequate protection for the full injected beam loss in two periods of the ring around the injection point, but the remainder of the ring is shielded for lower losses of {le} 10% full beam. This will require a system to insure that beam losses don't exceed these levels for a period of time that could cause excessive radiation levels outside the shield walls. This beam containment system will measure, provide a level of control and alarm indicatio… more
Date: May 23, 2010
Creator: Kramer, S. L.; Casey, W. & Job, P. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Superconducting solenoids for the Muon collider

Description: The muon collider is a new idea for lepton colliders. The ultimate energy of an electron ring is limited by synchrotron radiation. Mouns, which have a rest mass that is 200 times that of an electron can be stored at much higher energies before synchrotron radiation limits ring performance. The problem with muon is their short lifetime (2.1 microseconds at rest). In order to operate a muon storage ring large numbers of muon must be collected, cooled and accelerated before they decay to an electr… more
Date: September 23, 1999
Creator: Green, M. A.; Eyssa, Y.; Kenny, S.; Miller, J. R.; Prestemon, S. & Weggel, R. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Closed Orbit Distortion and the Beam-Beam Interaction

Description: We study the applicability of beam-beam deflection techniques as a tuning tool for the SLAC/LBL/LLNL B factory, PEP-II. Assuming that the closed orbits of the two beams are separated vertically at the interaction point by a local orbit bump that is nominally closed, we calculate the residual beam orbit distortions due to the beam-beam interaction. Difference orbit measurements, performed at points conveniently distant from the IP, provide distinct coordinate- or frequency-space signatures that … more
Date: February 23, 2007
Creator: Furman, M.; Chin, Y.; Eden, J.; /LBL, Berkeley; Kozanecki, W.; /DAPNIA, Saclay /SLAC et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Muon G-2 and Electric Dipole Moments in Storage Rings: Powerful Probes of Physics Beyond the Standard Model.

Description: We have shown that the study of dipole moments, both magnetic and electric, in storage rings offer unique opportunities in probing physics beyond the Standard Model (SM). Both methods use similar techniques (particle and spin precession in magnetic storage rings). We are currently investigating the systematic errors associated with the resonance electric dipole moment (EDM) method. So far it looks very promising.
Date: May 23, 2005
Creator: Semertzidis, Y. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Generating Ultrashort Coherent Soft X-ray Radiation in Storage Rings Using Angular-modulated Electron Beams

Description: A technique is proposed to generate ultrashort coherent soft x-ray radiation in storage rings using angular-modulated electron beams. In the scheme a laser operating in the TEM01 mode is first used to modulate the angular distribution of the electron beam in an undulator. After passing through a special beam line with non-zero transfer matrix element R{sub 54}, the angular modulation is converted to density modulation which contains considerable higher harmonic contents of the laser. It is foun… more
Date: August 23, 2010
Creator: Xiang, D. & Wan, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Progress in studies of Electron-Cloud-Induced Optics Distortions at CESRTA

Description: The Cornell Electron Storage Ring Test Accelerator (CesrTA) program has included extensive measurements of coherent betatron tune shifts for a variety of electron and positron beam energies, bunch population levels, and bunch train configurations. The tune shifts have been shown to result primarily from the interaction of the beam with the space-charge field of the beam-induced lowenergy electron cloud in the vacuum chamber. Comparison to several advanced electron cloud simulation program packa… more
Date: May 23, 2010
Creator: Crittenden, J. A.; Calvey, J. R.; Dugan, G. F.; Kreinick, D. L.; Leong, Z.; Livezey, J. A. et al.
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Partner: UNT Libraries Government Documents Department
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Interaction region design for the electron-nucleon collider ENC at FAIR

Description: To facilitate studies of collisions between polarized electron and protons at {radical}s = 14 GeV; constructing an electron-nucleon collider at the FAIR facility has been proposed. This machine would collide the stored 15 GeV polarized proton beam in the HESR with a polarized 3.3 GeV electron beam circulating in an additional storage ring. We describe the interaction region design of this facility, which utilizes the PANDA detector.
Date: May 23, 2010
Creator: Montag, C.; Jankowiak, A. & Lehrach, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Optimization of Dynamic Aperture of PEP-X Baseline Design

Description: SLAC is developing a long-range plan to transfer the evolving scientific programs at SSRL from the SPEAR3 light source to a much higher performing photon source. Storage ring design is one of the possibilities that would be housed in the 2.2-km PEP-II tunnel. The design goal of PEPX storage ring is to approach an optimal light source design with horizontal emittance less than 100 pm and vertical emittance of 8 pm to reach the diffraction limit of 1-{angstrom} x-ray. The low emittance design req… more
Date: August 23, 2010
Creator: Wang, Min-Huey; Cai, Yunhai & Nosochkov, Yuri
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Partner: UNT Libraries Government Documents Department
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Initial scientific uses of coherent synchrotron radiation inelectron storage rings

Description: The production of stable, high power, coherent synchrotron radiation at sub-terahertz frequency at the electron storage ring BESSY opens a new region in the electromagnetic spectrum to explore physical properties of materials. Just as conventional synchrotron radiation has been a boon to x-ray science, coherent synchrotron radiation may lead to many new innovations and discoveries in THz physics. With this new accelerator-based radiation source we have been able to extend traditional infrared m… more
Date: November 23, 2004
Creator: Basov, D. N.; Feikes, J.; Fried, D.; Holldack, K.; Hubers, H. W.; Kuske, P. et al.
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Partner: UNT Libraries Government Documents Department
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