论文标题
同位素生产的兰斯质子束性能的优化
Optimization of LANSCE Proton Beam Performance for Isotope Production
论文作者
论文摘要
LANSCE同位素生产设施（IPF）利用100米的质子束，平均功率为23 kW，用于医学，核物理，国家安全，环境科学和工业领域的同位素生产。在100毫秒光束线中，典型的可耐受性分数损耗为4 x10-3。进行实验束研究以最大程度地减少光束损耗。对离子源提取电压的调整导致在相空间中去除尾巴。梁线的基于光束的转向导致梁发射量的降低。重新调整100兆四极的转运导致消除过多的光束包络振荡，并去除靶标在靶标光环的重要部分。在LINAC（DTL）中仔细的光束匹配，在DTL中提供了远光捕获（75％）。改进后，通过数量级降低了100毫秒光束线中的光束损耗，并达到5 x10-4的分数水平。
The LANSCE Isotope Production Facility (IPF) utilizes a 100-MeV proton beam with average power of 23 kW for isotope production in the fields of medicine, nuclear physics, national security, environmental science and industry. Typical tolerable fractional beam loss in the 100-MeV beamline is 4 x10-3. Experimental beam study was made to minimize the beam losses. Adjustments to the ion source extraction voltage resulted in the removal of tails in phase space. Beam based steering in beamlines led to the reduction of beam emittance growth. Readjustment of the 100-MeV quadrupole transport resulted in the elimination of excessive beam envelope oscillations and removed significant parts of the beam halo at the target. Careful beam matching in the drift tube linac (DTL) provided high beam capture (75%) in the DTL. After improvements, beam losses in the 100-MeV beamline were reduced by an order of magnitude and reached the fractional level of 5 x10-4.
