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Yu. Satov,
B. Sharkov,
H. Haseroth,
Yu. Smakovski,
K. Makarov,
S. Kondrashev,
V. Roerich, A. Stepanov,
H. Kugler,
R. Scrivens,
O. Camut,
A. Shumshurov,
A. Balabaev,
A. Charushin
[show abstract]
[hide abstract]
ABSTRACT: Experimental and numerical calculation results devoted to development of an optical system for an ion source based on a repetition rate CO2 laser are described. The laser chain consists of a master oscillator, gas absorber cells, and a four-pass amplifier. The optical system provides smooth laser pulses with variable duration and high spatial quality that ensures efficiency for plasma heating and ion generation. The parameters of the plasma ion component measured in the CERN laboratory are applied for a lead target illumination.
Journal of Russian Laser Research 04/2004; 25(3):205-216. · 0.75 Impact Factor
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[show abstract]
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ABSTRACT: A set-up of the CO2 SKATE and its output characteristics are described. The system is based on a self-sustained gas discharge module with x-ray preionization that ensures reliability and stable repetition rate operation at 1 Hz for a long time. Measurement of the initial electron density in the discharge volume produced by an x-ray gun is presented for different gases and their mixtures, which is of independent interest for some applications of x-ray preionization. Data on measurements of the low-intensity signal gain and laser parameters for a free-running generator configuration are presented as well as long-term operation characteristics. This laser system has been used as a CO2 generator with gigawatt peak intensity and high spatial–temporal characteristics. In particular, the laser can be used as a driver for a source of multicharged ions in contrast to the laboratory prototypes previously investigated.
Journal of Russian Laser Research 01/2004; 25(6):524-534. · 0.75 Impact Factor
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A. Balabaev,
S. Kondrashev,
K. Konukov,
A. Logkin,
N. Mescheryakov,
B. Sharkov,
A. Shumshurov,
S. Khomenko,
K. Makarov,
S. Nischuk,
V. Roerich,
Yu. Satov,
Yu. Smakovskii, A. Stepanov
[show abstract]
[hide abstract]
ABSTRACT: Experiments have been carried out to optimize the yield of Pb <sup>+4</sup> ions from the plasma produced by a 100 J CO <sub>2</sub> laser. The laser power density on the target surface was varied between 10<sup>10</sup> W / cm <sup>2</sup> and 9×10<sup>10</sup> W / cm <sup>2</sup> by changing the focal spot size. Data on the production of Pb <sup>+4</sup> to Pb <sup>+10</sup> ions are presented for the 15 and 40 ns laser pulse durations. The 10 mA/80 μs pulses of Pb <sup>+4</sup> ions (about 10<sup>12</sup> ions per pulse) were directed into an extraction aperture of 3.4 cm in diameter for optimal irradiation conditions. This is comparable with the parameters of the MEVVA ion source. Laser ion sources can be especially attractive due to the absence of the “noise” problem, typical for the MEVVA ion source, and because of the possibility of generating higher charge states. The emittance of the lead ion beam extracted from the laser-produced plasma was measured by using a 5 J laser, which provided plasma parameters (the electron temperature, ion velocities, and the charge state distribution) close to those of the plasma generated by the 100 J CO <sub>2</sub> laser under optimized (for the yield of Pb <sup>+4</sup> ions) conditions. The emittance was measured for 30 and 50 kV extraction voltages with a 10 μs temporal resolution. The value of about 400 π mm mrad was obtained for the lead ion beam with the total current of 10 mA, and a pulse length of 75 μs for about 75% of the beam ions. © 2002 American Institute of Physics.
Review of Scientific Instruments 04/2002; · 1.37 Impact Factor
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P. Fournier,
G. Gregoire,
H. Haseroth,
H. Kupler,
N. Lisi,
A. Lombardi,
C. Meyer,
P. Ostroumov,
W. Pirkl,
J.-C. Schnuriger, [......],
F. Varela-Rodriguez,
S. Kondrashev,
J. Roudskoy,
B. Sharkov,
A. Shumshurov,
S. Khomenko,
K. Makarov,
V. Roerich,
Y. Satov, A. Stepanov
[show abstract]
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ABSTRACT: CERN, together with ITEP and TRINITI (Russia), is developing a CO
<sub>2</sub> laser ion source. The key design parameters are:
1.4×10<sup>10</sup> ions of Pb<sup>25+</sup> in a pulse of 5.5
μs, with a 4-RMS emittance of 0.2×10<sup>-6</sup> rad m,
working at a repetition rate of 1 Hz. This device is considered as one
candidate source for LHC heavy ion operation. The status of the laser
development, the experimental set-up of the source consisting of the
target area and its illumination, the plasma expansion area and
extraction, beam transport and ion pre-acceleration by an RFQ, will be
given,
Particle Accelerator Conference, 1999. Proceedings of the 1999; 02/1999
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H. Haseroth,
H. Kugler,
K. Langbein,
N. Lisi,
A. Lombardi,
H. Magnusson,
W. Pirkl,
J. C. Schnuriger,
R. Scrivens,
J. Tambini, [......], A. Stepanov,
Y. Satov,
S. Kondrashev,
S. Savin,
B. Sharkov,
A. Shumshurov,
J. Krása,
L. Láska,
M. Pfeifer,
E. Woryna
The Review of scientific instruments 01/1998; · 1.52 Impact Factor
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P. Fournier,
G Grégoire,
H Haseroth,
S. Khomenko,
S A Kondrashev,
H Kugler,
N. Lisi,
A M Lombardi,
K Makarov,
C Meyer, [......],
V Rörich,
I Roudskoy,
Yu A Satov,
J.-C. Schnuriger,
R Scrivens,
B Yu Sharkov,
A V Shumshurov, A. Stepanov,
V. Tenishev,
F Varelá-Rodriguez
[show abstract]
[hide abstract]
ABSTRACT: CERN, together with ITEP and TRINITI (Russia), is developing a CO2 laser ion source. The key design parameters are: 1.4 1010 ions of Pb25+ in a pulse of 5.5 ms, with a 4-rms emittance of 0.2 10-6 rad m, working at a repetition rate of 1 Hz. This device is considered as one candidate source for LHC heavy ion operation. The status of the laser development, the experimental set-up of the source consisting of the target area and its illumination, the plasma expansion area and extraction, beam transport and ion pre-acceleration by an RFQ, will be given.
