| Paper |
Title |
Page |
| THPMS019 |
Comparison of 6D Ring Cooler Schemes and Dipole Cooler for Mu+Mu- Collider Development
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3038 |
| |
- D. B. Cline
- Y. Fukui
SLAC, Menlo Park, California
- A. A. Garren
LBNL, Berkeley, California
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We discuss the various schemes to use ring coolers for 6D cooling for Mu+Mu- colliders. The earliest successful cooler used dipoles and quadrupoles and a high dispersion low beta region. This was also proposed in the form of solenoids. Recently, there have been many new ideas. The simplest is to use a simple dipole ring with high-pressure gas absorber or Li hydride. We show the results of simulations and compare with the results for other cooler schemes.
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| TUOBAB02 |
Experimental Characterization of the Transverse Phase Space of a 60-MeV Electron Beam through a Compressor Chicane
|
788 |
| |
- F. Zhou
- R. B. Agustsson, G. Andonian, D. B. Cline, A. Y. Murokh, J. B. Rosenzweig
UCLA, Los Angeles, California
- A. C. Kabel
SLAC, Menlo Park, California
- V. Yakimenko
BNL, Upton, Long Island, New York
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Funding: U. S. DOE of Sciences
Space charge and coherent synchrotron radiation may deteriorate electron beam quality when the beam passes through a magnetic bunch compressor. This paper presents the transverse phase-space tomographic measurements for a compressed beam at 60 MeV, around which energy the first stage of magnetic bunch compression takes place in most advanced linacs. Transverse phase-space bifurcation of a compressed beam is observed at that energy, but the degree of the space charge-induced bifurcation is appreciably lower than the one observed at 12 MeV. The Trafic4 simulation confirms the observation.
The paper was published at PRST-AB, November 2006
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Slides
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| THPMS022 |
6 Dimensional Muon Phase Space Cooling by Using Curved Lithium Lenses
|
3047 |
| |
- Y. Fukui
- D. B. Cline, A. A. Garren
UCLA, Los Angeles, California
- H. G. Kirk
BNL, Upton, Long Island, New York
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A curved Lithium lens ring model can provide the emittance exchange mechanism in obtaining the muon 6 dimensional phase space cooling. With straight Lithium lenses in a muon cooling ring, only transverse phase space cooling has been demonstrated. We demonstrate the 6 dimensional phase space cooling with various parameters of a muon cooling ring in tracking simulation.
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| FRPMS059 |
Generation and Analysis of Subpicosecond Double Electron Bunch at the Brookhaven Accelerator Test Facility
|
4132 |
| |
- X. P. Ding
- M. Babzien, K. Kusche, V. Yakimenko
BNL, Upton, Long Island, New York
- D. B. Cline
UCLA, Los Angeles, California
- W. D. Kimura
STI, Washington
- F. Zhou
SLAC, Menlo Park, California
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Funding: U. S.DOE of Science
Two compressed electron beam bunches from a single 60-MeV bunch have been generated in a reproducible manner during compression in the magnetic chicane - "dog leg" arrangement at ATF. Measurements indicate they have comparable bunch lengths (~100-200 fs) and are separated in energy by ~1.8 MeV with the higher-energy bunch preceding the lower-energy bunch by 0.5-1 ps. Some simulation results for analyzing the double-bunch formation process are also presented.
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