Standard Filling Schemes for Various LHC Operation Modes
Standard Filling Schemes for Various LHC Operation Modes
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发表时间：
2003-09
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通讯作者：
R. Bailey;P. Collier
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作者：
R. Bailey;P. Collier
各种束团填充模式的LHC。每一个对应于机器的特定操作模式。对于质子操作，除了标称的25 ns质子束团填充方案外，还提供了75 ns间距版本，以及在调试期间和TOTEM操作期间可能使用的两种方案。其中之一，156束方案，需要从预注入器等间隔的4束，这仍有待证明。对于使用离子的操作，给出了标称聚束图案;以及具有少得多的聚束的图案，用于早期离子运行。本注释是LHC项目注释323的修订版[1]。对25 ns和75 ns方案进行了修改，以增加对称性，从而减少Pacman聚束效应。TOTEM的156束团方案也已列入修订说明。
Various bunch filling patterns for the LHC are presented. Each corresponds to a specific mode of operation for the machine. For operation with protons, in addition to the nominal 25ns proton bunch filling scheme, a 75ns spacing version is given, together with two schemes that may be used during commissioning and also during TOTEM operation. One of these, the 156-bunch scheme, requires 4 equally spaced bunches from the pre-injectors, which remains to be demonstrated. For operation with ions, the nominal bunch pattern is given; together with a pattern having far fewer bunches to be used for early ion running. This note is a revised version of LHC Project note 323[1]. Modifications have been made to the 25ns and 75ns scheme to increase the symmetry and hence reduce the Pacman bunch effects. The 156-bunch scheme for TOTEM has also been included in the revised note.