First demonstration of the use of crab cavities on hadron beams

First demonstration of the use of crab cavities on hadron beams
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首次演示在强子束上使用蟹腔

DOI:
10.1103/physrevaccelbeams.24.062001
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发表时间:
2021
影响因子:
1.7
通讯作者:
Calaga R
Calaga R
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Calaga R

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许多未来的粒子对撞机需要光束抓取来恢复来自相互作用点(IP)的非零交叉角度的几何光度损失。首次用高能质子成功地进行了强子束抓蟹实验。这一突破性成果对实现高光度大型强子对撞机(HL-LHC)和未来圆形对撞机(FCC)的物理目标具有重要意义。HL-LHC的预期峰值光度增益(与碰撞率有关)为65%,而FCC的预期峰值光度增益更大。利用欧洲核子研究中心(CERN)超质子同步加速器(SPS)中的质子束进行了新的束流物理实验,展示了未来HL-LHC蟹腔运行的几个关键方面,包括一对腔体的透明度,大束流情况下腔体阻抗的全面表征,蟹腔引起的射频噪声引起的发射度可控增长。
Many future particle colliders require beam crabbing to recover geometric luminosity loss from the nonzero crossing angle at the interaction point (IP). A first demonstration experiment of crabbing with hadron beams was successfully carried out with high energy protons. This breakthrough result is fundamental to achieve the physics goals of the high luminosity LHC (HL-LHC) and the future circular collider (FCC). The expected peak luminosity gain (related to collision rate) is 65% for HL-LHC and even greater for the FCC. Novel beam physics experiments with proton beams in CERN’s Super Proton Synchrotron (SPS) were performed to demonstrate several critical aspects for the operation of crab cavities in the future HL-LHC including transparency with a pair of cavities, a full characterization of the cavity impedance with high beam currents, controlled emittance growth from crab cavity induced rf noise.
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