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Centrifugal space-charge forces in SLC

Description: A preliminary estimate is made of the effect of the centrifugal space charge forces on SLC assuming that the space-charge effect is a highly nonlinear force whose important term is the second derivative at the beam center. A scaling law is used to get the horizontal chromaticity for the arcs of SLC, and the space-charge effect on the beam is calculated on that basis. (LEW)
Date: April 14, 1986
Creator: Sands, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Essay: Bob Siemann-SLC Days at SLAC

Description: Bob Siemann was a great experimentalist and an excellent teacher.We will greatly miss him. Bob came to SLAC in early 1991 to work on the Stanford Linear Collider (SLC). The SLC was a challenging accelerator which began operating in the late 1980's but still had numerous obstacles to be overcome years into operation. One of the compounding difficulties was making reproducible measurements, since the stability of the collider was poor and the diagnostics were insufficient. Bob dove into this chal… more
Date: November 14, 2011
Creator: Raubenheimer, Tor O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Obtaining the Bunch Shape in a Linac from Beam Spectrum Measurements

Description: In linacs with high single-bunch charge, and tight tolerances for energy spread and emittance growth, controlling the short-range wakefield effects becomes extremely important. The effects of the wakefields, in turn, depend on the bunch length and also on the bunch shape. It was shown in the linac of the Stanford Linear Collider (SLC), for example, that by shaping the bunch, the final rms energy spread could be greatly reduced, compared to for the standard Gaussian bunch shape[1]. Therefore, in… more
Date: April 14, 1999
Creator: Bane, Karl LF
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Current Performance of the SLD VXD3

Description: During 1996, the SLD collaboration completed construction and began operation of a new charge-coupled device (CCD) vertex detector (VXD3). Since then, its performance has been studied in detail and a new topological vertexing technique has been developed. In this paper, we discuss the design of VXD3, procedures for aligning it, and the tracking and vertexing improvements that have led to its world-record performance.
Date: September 14, 1999
Creator: Abe, Toshinori
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Single pass collider memo: Dispersive effects of orbit errors in the SLC arcs

Description: An analytical attempt is made to estimate the perturbations of eta-functions after orbit correction of the SLC arcs. Emphasis is on the effects caused by the orbit errors created by misalignments. It is shown that the 'non-dispersive' property of a 'magnet mover' is not true whenever the vertical off-energy function is non-zero. The north arc is used as an example for numerical calculation. (LEW)
Date: November 14, 1986
Creator: Weng, W. & Sands, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

First order comparison of numerical calculation and two different turtle input schemes to represent a SLC defocusing magnet

Description: Correcting the dispersion function in the SLC north arc it turned out that backleg-windings (BLW) acting horizontally as well as BLW acting vertically have to be used. In the latter case the question arose what is the best representation of a defocusing magnet with excited BLW acting in the vertical plane for the computer code TURTLE. Two different schemes, the 14.-scheme and the 20.-scheme were studied and the TURTLE output for one ray through such a magnet compared with the numerical solution… more
Date: July 14, 1983
Creator: Jaeger, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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