2011 Particle Accelerator Conference - Classification: Accelerator Technology / Tech 01: Proton and Ion Sources

Paper	Title	Page
TUP013	A Concept Design of a Compton Scattering Light Source based on the HLS Electron Storage Ring	835
	X.C. Lai, H. Hao, H.Q. Huang, W.W. Li, X.Q. Wang, D.R. Xu USTC/NSRL, Hefei, Anhui, People's Republic of China
	Funding: National Natural Science Foundation of China (Contract NO. 11045003) Hefei Light Source (HLS) is a 2nd generation light source lasering high flux ultraviolet and soft x-ray with 200 MeV to 800 MeV electron beam. To explorer other applications of the electron storage ring of HLS, a concept design of Hefei Compton Scattering Light Source (HCSLS) is proposed. In this paper, Compton Scattring Simulation Code(CSSC), a parallel code based on the analytical method to simulate the Compton scattering between the laser beam and the electron beam, is presented. Using the CSSC, it is computed that HCSLS will produce photons with a total flux of 10⁹ s^-1 to 10¹1 s^-1, and energy of 0.07 MeV to 1.15 MeV at the maximum spectral flux density with the 200 MeV to 800 MeV electron beam scattering with a kilo-watts CO2 laser. With a much shorter wave laser beam from an Nd:YVO4 laser, the scattered photons energy at the maximum spectral flux density is improved by a factor of 10, while its flux is reduce by a factor of 100 due to the lower peak laser power.

TUP014	Broad-band Beam Chopper for a CW Proton Linac at Fermilab	838
	N. Solyak, E. Gianfelice-Wendt, V.A. Lebedev, S. Nagaitsev, D. Sun Fermilab, Batavia, USA
	The specifications and the initial conceptual ides for a broad-band proton chopper for a Fermilab Project X linac will be presented. The chopper will form bunch patterns required by physics experiments and will work with downstream beam splitter, allowing for a variable bunch pattern to be delivered to up to three experiment concurrently.

TUP016	Beam Brightness Booster with Charge Exchange Injection and Superintense Circulating Beams Production	844
	V.G. Dudnikov, C.M. Ankenbrandt Muons, Inc, Batavia, USA
	An increase of intensity and brightness of proton beam by means of charge exchange injection and devices developed for this experiment are considered. First observation of e-p instability, explanation and damping by feed back are discussed. Discovery of “cesiation effect” leading to multiple increase of negative ion emission from gas discharges and development of surface-plasma sources for intense high brightness negative ion beams production are considered. By these developments were prepared a possibility for production of stable “superintense” circulating beam with intensity and brightness fare above space charge limit. A beam brightness booster (BBB) for significant increase of accumulated beam brightness is discussed. New opportunity for simplification of the superintense beam production is promised by developing of nonlinear close to integrable focusing system with broad spread of betatron tune and the broad bend feed back system for e-p instability suppression.

Paper

Title

Page

A Concept Design of a Compton Scattering Light Source based on the HLS Electron Storage Ring

835

X.C. Lai, H. Hao, H.Q. Huang, W.W. Li, X.Q. Wang, D.R. Xu
USTC/NSRL, Hefei, Anhui, People's Republic of China

Funding: National Natural Science Foundation of China (Contract NO. 11045003)
Hefei Light Source (HLS) is a 2nd generation light source lasering high flux ultraviolet and soft x-ray with 200 MeV to 800 MeV electron beam. To explorer other applications of the electron storage ring of HLS, a concept design of Hefei Compton Scattering Light Source (HCSLS) is proposed. In this paper, Compton Scattring Simulation Code(CSSC), a parallel code based on the analytical method to simulate the Compton scattering between the laser beam and the electron beam, is presented. Using the CSSC, it is computed that HCSLS will produce photons with a total flux of 10⁹ s^-1 to 10¹1 s^-1, and energy of 0.07 MeV to 1.15 MeV at the maximum spectral flux density with the 200 MeV to 800 MeV electron beam scattering with a kilo-watts CO2 laser. With a much shorter wave laser beam from an Nd:YVO4 laser, the scattered photons energy at the maximum spectral flux density is improved by a factor of 10, while its flux is reduce by a factor of 100 due to the lower peak laser power.

TUP014

Broad-band Beam Chopper for a CW Proton Linac at Fermilab

838

N. Solyak, E. Gianfelice-Wendt, V.A. Lebedev, S. Nagaitsev, D. Sun
Fermilab, Batavia, USA

The specifications and the initial conceptual ides for a broad-band proton chopper for a Fermilab Project X linac will be presented. The chopper will form bunch patterns required by physics experiments and will work with downstream beam splitter, allowing for a variable bunch pattern to be delivered to up to three experiment concurrently.

TUP016

Beam Brightness Booster with Charge Exchange Injection and Superintense Circulating Beams Production

844

V.G. Dudnikov, C.M. Ankenbrandt
Muons, Inc, Batavia, USA

An increase of intensity and brightness of proton beam by means of charge exchange injection and devices developed for this experiment are considered. First observation of e-p instability, explanation and damping by feed back are discussed. Discovery of “cesiation effect” leading to multiple increase of negative ion emission from gas discharges and development of surface-plasma sources for intense high brightness negative ion beams production are considered. By these developments were prepared a possibility for production of stable “superintense” circulating beam with intensity and brightness fare above space charge limit. A beam brightness booster (BBB) for significant increase of accumulated beam brightness is discussed. New opportunity for simplification of the superintense beam production is promised by developing of nonlinear close to integrable focusing system with broad spread of betatron tune and the broad bend feed back system for e-p instability suppression.