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A high performance spot size monitor

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TLDR
In this article, beam size estimates made using beam-beam deflections are used for optimization of the Stanford Linear Collider (SLC) electron-positron beam sizes, and the beam size and intensity goals for 1996 were 2.1 x 0.6 μm (x,y) at 4.0x10 10 particles per pulse.
Abstract
Beam size estimates made using beam-beam deflections are used for optimization of the Stanford Linear Collider (SLC) electron-positron beam sizes. Beam size and intensity goals for 1996 were 2.1 x 0.6 μm (x,y) at 4.0x10 10 particles per pulse. Conventional profile monitors, such as scanning wires, fail at charge densities well below this. Since the beam-beam deflection does not provide single beam information, another method is needed for Interaction Region (IP) beam size optimization. The laser based profile monitor uses a finely focused 349 nm. wavelength , frequency-tripled YLF laser pulse that traverses the particle beam path about 29 cm away from the e+/e- IP. Compton scattered photons and energy degraded e+/e- are detected as the beam is steered across the laser pulse. The laser pulse has a transverse size, ( σ0, ), of 380 nm and a Rayleigh range of about 5 μm. This is adequate for present or planned SLC beams. Design and results are presented.

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Proceedings ArticleDOI

The Next Linear Collider damping ring complex

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Summary of the accelerator working group

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References
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Achievements in optics

Proceedings ArticleDOI

Wire scanners for beam size and emittance measurements at the SLC

TL;DR: In this article, the authors describe the design, construction, commissioning and ultimate uses of wire scanners in the SLAC Linear Collider (SLAC) focusing on the linear accelerator and upstream systems scanners.
Proceedings ArticleDOI

Excimer laser damage testing of optical materials

TL;DR: In this paper, the setup, equipment, and procedures for laser damaging are discussed, as well as the equipment problems associated with these measurements and initial comparisons between 193 nm and 248 nm laser damage.
Proceedings ArticleDOI

The Stanford Linear Collider

TL;DR: The Stanford Linear Collider (SLC) as mentioned in this paper is the only high-energy e/sup +/e/sup -/ linear collider in the world that produces high intensity, submicron sized, polarized beams at a single interaction point.

Design of laser-Compton spot size monitor

TL;DR: In this paper, a diagnostic method for measuring transverse size of electron beam by nondestructive interaction of Compton scattering of laser beam has been proposed, and a first model of this spot size monitor is under construction for the FFTB -- SLAC experiment, in order to measure the electron beam size of 60 nanometer vertical by 1 micrometer horizontal, using Nd: YAG-laser of 1.064 µm wavelength.
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