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Experience in Reducing Electron Cloud and Dynamic Pressure Rise in Warm and Cold Regions in RHIC
/ Zhang, S Y (BNL, Upton, Long Island, New York) ; Ahrens, Leif (BNL, Upton, Long Island, New York) ; Alessi, James (BNL, Upton, Long Island, New York) ; Bai, Mei (BNL, Upton, Long Island, New York) ; Blaskiewicz, Michael (BNL, Upton, Long Island, New York) ; Cameron, Peter (BNL, Upton, Long Island, New York) ; Connolly, Roger (BNL, Upton, Long Island, New York) ; Drees, Angelika (BNL, Upton, Long Island, New York) ; Fischer, Wolfram (BNL, Upton, Long Island, New York) ; Gullotta, Justin (BNL, Upton, Long Island, New York) et al.
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.595
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3.
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RHIC Performance as Polarized Proton Collider in Run-6
/ Ptitsyn, Vadim (BNL, Upton, Long Island, New York) ; Ahrens, Leif (BNL, Upton, Long Island, New York) ; Bai, Mei (BNL, Upton, Long Island, New York) ; Barton, Donald (BNL, Upton, Long Island, New York) ; Blaskiewicz, Michael (BNL, Upton, Long Island, New York) ; Bravar, Alessandro (BNL, Upton, Long Island, New York) ; Brennan, Joseph Michael (BNL, Upton, Long Island, New York) ; Brown, Kevin A (BNL, Upton, Long Island, New York) ; Bruno, Donald (BNL, Upton, Long Island, New York) ; Bunce, Gerry (BNL, Upton, Long Island, New York) et al.
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.592
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4.
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Beam Pipe Desorption Rate in RHIC
/ Huang, Haixin (BNL, Upton, Long Island, New York) ; Fischer, Wolfram (BNL, Upton, Long Island, New York) ; He, Ping (BNL, Upton, Long Island, New York) ; Hseuh Hsiao Chaun (BNL, Upton, Long Island, New York) ; Iriso, Ubaldo (BNL, Upton, Long Island, New York) ; Ptitsyn, Vadim (BNL, Upton, Long Island, New York) ; Trbojevic, Dejan (BNL, Upton, Long Island, New York) ; Wei, Jie (BNL, Upton, Long Island, New York) ; Zhang, S Y (BNL, Upton, Long Island, New York)
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.583
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5.
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Acceleration of Polarized Protons in the AGS with Two Helical Partial Snakes
/ Huang, Haixin ; Ahrens, Leif ; Bai, Mei ; Bravar, Alessandro ; Brown, Kevin A ; Bunce, Gerry ; Courant, Ernest D ; Gardner, Chris J ; Glenn, Joseph ; Gupta, Ramesh C et al.
The RHIC spin program requires 2*1011
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1404
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6.
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Optimization of AGS Polarized Proton Operation with the Warm Helical Snake
/ Takano, Junpei ; Ahrens, Leif ; Bai, Mei ; Brown, Kevin A ; Gardner, Chris J ; Glenn, Joseph ; Hattori, Toshiyuki ; Huang, Haixin ; Luccio, Alfredo U ; MacKay, William W et al.
A normal conducting helical dipole partial Siberian snake (Warm Snake) has been installed in the Alternating Gradient Synchrotron (AGS) at Brookhaven National Laboratory (BNL) for overcoming all of imperfection depolarizing resonances and reducing the transverse coupling resonances caused by the solenoidal Siberian snake which had been operated in AGS before the last polarized run. The polarized proton beam has been accelerated successfully with the warm snake and the polarization at extraction of the AGS was increased to 50% as opposed to 40% with the solenoidal snake. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1003
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7.
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Beam Induced Pressure Rise at RHIC
/ Zhang, S Y ; Alessi, James ; Bai, Mei ; Blaskiewicz, Michael ; Cameron, Peter ; Drees, Angelika ; Fischer, Wolfram ; Gullotta, Justin ; He, Ping ; Hseuh Hsiao Chaun et al.
Beam induced pressure rise in RHIC warm sections is currently one of the machine intensity and luminosity limits. This pressure rise is mainly due to electron cloud effects. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.4308
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8.
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Operations and Performance of RHIC as a Cu-Cu Collider
/ Pilat, Fulvia Caterina ; Ahrens, Leif ; Bai, Mei ; Barton, Donald ; Beebe-Wang, Joanne ; Blaskiewicz, Michael ; Brennan, Joseph M ; Bruno, Donald ; Cameron, Peter ; Connolly, Roger et al.
The 5th year of RHIC operations, started in November 2004 and expected to last till June 2005, consists of a physics run with Cu-Cu collisions at 100 GeV/u followed by one with polarized protons at 100 GeV. We will address here overall performance of the RHIC complex used for the first time as a Cu-Cu collider, and compare it with previous operational experience with Au, PP and asymmetric d-Au collisions. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.4281
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9.
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Observation of Electron-Ion Effects at RHIC Transition
/ Wei, Jie ; Bai, Mei ; Blaskiewicz, Michael ; Cameron, Peter ; Connolly, Roger ; Della Penna, Al ; Fischer, Wolfram ; Huang, Haixin ; Iriso, Ubaldo ; Lee, Roger C et al.
Electron cloud is found to be a serious obstacle on the upgrade path of the Relativistic Heavy Ion Collider (RHIC). At twice the design number of bunches, electron-ion interactions cause significant instability, emittance growth, and beam loss along with vacuum pressure rises when the beam is accelerated across the transition..
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.4087
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10.
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Observations of Snake Resonance in RHIC
/ Bai, Mei ; Huang, Haixin ; Lee, Shyh-Yuan ; Lin, Fanglei ; MacKay, William ; Ptitsyn, Vadim ; Roser, Thomas ; Tepikian, Steven
Siberian snakes now become essential in the polarized proton acceleration. With proper configuration of Siberian snakes, the spin precession tune of the beam becomes $\frac{1}{2}$ which avoids all the spin depolarizing resonance. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2839
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