Research Article
Longitudinal Beam Dynamics for the Heavy-Ion Synchrotron Booster Ring at HIAF
Table 1
Main parameters of the BRing.
| | Main parameters | Length (m) | 569.0985 | | Maximum magnetic rigidity (Tm) | 34.0 | | Accelerating rate (T/s) | 12.0 | | Operation cycle (s) | 0.45–10000 (normal mode 0.45 s, slow extraction mode 4–10000 s) | | Lattice | Superperiod | 3 | | Tune | Qx/Qy = 9.47/9.43 (normal mode) | | Qx/Qy = 9.348/9.43 (slow extraction mode) | | Qx/Qy = 14.47/10.43 (proton mode) | | Transverse acceptance (πmm·mrad) | Ah/Av: 200/100 (∆P/P = ±0.5%) | | Transition factor γ | 7.65 (normal mode) | | 11.22 (proton mode) | | Injection | Ion | p-238U35+ | | Energy (MeV/u) | 48 (p), 17 (238U35+) | | Injection current (emA) | 2.0(p), 1.0(238U35+) | | Momentum spread (Δp/p) | ≤ ±2 × 10−3 | | Emittance (πmm·mrad) | ≤5 (6σ) | | Extraction | Maximum energy (MeV/u) | 9300 (p), 830 (238U35+) | | Current (ppp) | 2.0 × 1012(p), 3.0 × 1010(238U35+) | | Magnet | Maximum field of dipoles (T) | 1.58 | | Bending radius of dipoles (m) | 22.0 | | Maximum field of quadrupoles (T/m) | 11 (arc), 11.1 (straight) | | Field of sextupoles (T/m2) | ≤34 | | Aperture (mm2) | 162 × 94 (dipoles), | | 192 × 106 (quadrupoles in the arc) | | 206 × 118 (quadrupoles in the straight) | | Radio frequency | Frequency range (MHz) | 0.324–1.049 (p) | | 0.397–1.789 (238U35+) | | Peak voltage (kV) | 268 | | Harmonic number | h = 1, 2 (p), h = 1, 2, 4 (238U35+) |
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