POWER DEPOSITION IN LHC MAGNETS WITH AND WITHOUT DISPERSION SUPPRESSOR COLLIMATORS DOWNSTREAM OF THE BETATRON CLEANING INSERTION
POWER DEPOSITION IN LHC MAGNETS WITH AND WITHOUT DISPERSION SUPPRESSOR COLLIMATORS DOWNSTREAM OF THE BETATRON CLEANING INSERTION
复制标题
BETATRON 清洁插入件下游有或没有色散抑制准直器的大型强子对撞机磁体中的功率沉积
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发表时间：
2014
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影响因子：
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通讯作者：
G. Steele
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作者：
A. Lechner;B. Auchmann;F. Cerutti;P. Granieri;R. Bruce;A. Verweij;S. Redaelli;N. Shetty;A. Marsili;E. Skordis;G. Steele
沉积在LHC电子感应加速器清洗插入下游的色散抑制器（DS）磁体中的功率由主要来自初级准直器中的单衍射相互作用的非动量质子控制。随着更高的光束能量和强度，预计在未来的操作，这些集群质子损失可能会引起磁铁淬火期间shortbeamlifetime。在本文中，我们提出了标称7TeV操作的FLUKA模拟，比较现有的布局与替代布局，其中选定的DS偶极子被替换为对较短的高场磁体和准直器。功率密度预测不同的准直器设置进行比较，对目前的估计淬火限制。此外，由于DS准直器的预期减少因子进行评估。
The power deposited in dispersion suppressor (DS) magnets downstream of the LHC betatron cleaning insertion is governed by off-momentum protons which predominantly originatefromsingle-diffractiveinteractionsinprimarycollimators. With higher beam energy and intensities anticipated in future operation, these clustered proton losses could possibly induce magnet quenches during periods of shortbeamlifetime. Inthispaper,we presentFLUKAsimulations for nominal7TeV operation,comparingtheexisting layout with alternative layouts where selected DS dipoles are substituted by pairs of shorter higher-field magnets and a collimator. Power densities predicted for different collimator settings are compared against present estimates of quench limits. Further, the expected reduction factor due to DS collimators is evaluated.