M A Furman 2006 New J. Phys. 8 279 doi:10.1088/1367-2630/8/11/279
A preliminary assessment of the electron-cloud effect for the FNAL main injector upgrade
Focus on Accelerator and Beam PhysicsM A Furman
Show affiliationsPart of Focus on Accelerator and Beam Physics
We present results from a preliminary assessment, via computer simulations, of the electron-cloud (EC) density for the FNAL Main Injector upgrade at injection energy. Assuming a peak value for secondary emission yield δmax = 1.3, we find a threshold value of the bunch population, Nb,th
1.25 ×1011, beyond which the EC density ρe reaches a steady-state level that is ~104 times larger than for Nb<Nb,th, essentially neutralizing the beam, and leading to a tune shift ~0.05. Our investigation is limited to a field-free region and to a dipole magnet region, both of which yield similar results for both Nb,th and the steady-state value of ρe. Possible dynamical effects from the EC on the beam, such as emittance growth and instabilities, remain to be investigated separately.
- PACS
-
29.27.Ac Beam injection and extraction
- Subjects
-
Accelerators, beams and electromagnetism
- Dates
-
Issue 11 (November 2006)
Received 27 March 2006
Published 28 November 2006
-
A preliminary assessment of the electron-cloud effect for the FNAL main injector upgrade
M A Furman 2006 New J. Phys. 8 279
-
A MEMS-based electrostatically tunable circular microstrip patch antenna
R Jackson Jr and R Ramadoss 2007 J. Micromech. Microeng. 17 1
-
Absolute frequency measurement of molecular iodine lines at 514.7 nm, interrogated by a frequency-doubled Yb-doped fibre laser
Jean-Pierre Wallerand et al 2006 Metrologia 43 294
-
Separability of the Hamilton–Jacobi and Klein–Gordon equations in Kerr–de Sitter metrics
Muraari Vasudevan et al 2005 Class. Quantum Grav. 22 339
-
Dirac operators and the calculation of the Connes metric on arbitrary (infinite) graphs
Manfred Requardt 2002 J. Phys. A: Math. Gen. 35 759
-
Discovery potential for supersymmetry in CMS
S Abdullin et al 2002 J. Phys. G: Nucl. Part. Phys. 28 469
-
Estimating the Instabilities of N Clocks by Measuring Differences of their Readings
P Tavella and A Premoli 1994 Metrologia 30 479
-
Physics concepts of solar ultraviolet radiation by distance education
A V Parisi 2005 Eur. J. Phys. 26 313
-
Evaluation of the reproducibility of lung motion probability distribution function (PDF) using dynamic MRI
Jing Cai et al 2007 Phys. Med. Biol. 52 365
-
Photons in gapless colour–flavour-locked quark matter
Mark Alford and Qinghai Wang 2005 J. Phys. G: Nucl. Part. Phys. 31 719