EMITTANCE PRESERVATION
EMITTANCE PRESERVATION
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发射率保持
DOI：
10.1002/9783527617272.ch7
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
F. Roncarolo
中科院分区：
文献类型：
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作者：
V. Kain;R. Assmann;B. Goddard;B. Holzer;J. Jowett;M. Meddahi;T. Mertens;F. Roncarolo
横向发射度的保持对于光度性能是至关重要的。在LHC设计阶段，整个LHC循环中允许的总发射度增加被设定为7%。注射过程在这方面尤为关键。试图量化的发射度增加注入稳定的光束的分析结果将被提交。2010年质子运行的亮度目标可以用比最初预期的更少的束团来实现。这是由于注入器的优异性能，即每束的质子数高于标称值，发射率也低于标称值。将给出明年运行所需仪器和发射度保存目标的建议。
The preservation of the transverse emittance is crucial for luminosity performance. At the LHC design stage the total allowed emittance increase was set to 7 % throughout the LHC cycle. The injection process is particularly critical in this respect. Results of an analysis trying to quantify the emittance increase from injection to stable beams will be presented. The luminosity goals of the 2010 proton run could be achieved with fewer bunches than initially foreseen. This is due to the excellent performance of the injectors concerning the higher than nominal number of protons per bunch and also the smaller than nominal emittances. Recommendations for required instrumentation and emittance preservation goals for next year’s run will be given.