mode - CERN Accelerator School
mode - CERN Accelerator School mode - CERN Accelerator School
6. The Radio Frequency Quadrupole 50
The Radio Frequency Quadrupole (RFQ) At low proton (or ion) energies, space charge defocusing is high and quadrupole focusing is not very effective effective, cell length becomes small → conventional accelerating structures (Drift Tube Linac) are very inefficient → use a (relatively) new structure, the Radio Frequency Quadrupole. RFQ = Electric quadrupole focusing channel + bunching + acceleration 51
- Page 1 and 2: Introduction to RF Linear Accelerat
- Page 3 and 4: (v/c)^2 ( 1 Proton and Electron Vel
- Page 5 and 6: Example: Superconducting Proton Lin
- Page 7 and 8: RF input λ p TM01 field configurat
- Page 9 and 10: Slowing down waves: the disc- loade
- Page 11 and 12: eam Traveling wave linac structures
- Page 13 and 14: mode 0 mode π/2 mode 2π/3 mode π
- Page 15 and 16: Comparing traveling and standing wa
- Page 17 and 18: Disc-loaded structures operating in
- Page 19 and 20: Examples p of DTL Top; CERN Linac2
- Page 21 and 22: eam Multigap linac structures: the
- Page 23 and 24: Proton linac architecture - cell le
- Page 25 and 26: Multi-gap Superconducting linac str
- Page 27 and 28: Quarter Wave Resonators Simple 2-ga
- Page 29 and 30: Focusing solenoids Examples: p an e
- Page 31 and 32: Electron linac architecture EXAMPLE
- Page 33 and 34: Heavy y Ion Linac Architecture EXAM
- Page 35 and 36: Longitudinal g dynamics y → Ions
- Page 37 and 38: Transverse dynamics - Space charge
- Page 39 and 40: Transverse equilibrium in ion and e
- Page 41 and 42: x_rms beaam size [m] High-intensity
- Page 43 and 44: 55. DDouble bl periodic i di accele
- Page 45 and 46: Mechanical errors differences in f
- Page 47 and 48: The Side Coupled p Linac To operate
- Page 49: The Cell-Coupled Drift Tube Linac W
- Page 53 and 54: RFQ Qpproperties p - 2 3. The dista
- Page 55 and 56: How to create a quadrupole RF mode
- Page 57 and 58: Electron sources: give energy to th
- Page 59 and 60: Accelerating structure: the choice
- Page 61 and 62: Mains Transforms mains power into D
- Page 63: Bibliography g p y 1. Reference Boo
The Radio Frequency<br />
Quadrupole (RFQ)<br />
At low proton (or ion) energies, space charge defocusing is high and<br />
quadrupole focusing is not very effective effective, cell length becomes small →<br />
conventional accelerating structures (Drift Tube Linac) are very inefficient<br />
→ use a (relatively) new structure, the Radio Frequency Quadrupole.<br />
RFQ = Electric quadrupole focusing channel + bunching + acceleration<br />
51
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