【摘 要】
：
At the China Spallation Neutron Source (CSNS),we have developed a custom gas-filling station,a glassblowing workshop,and a spin-exchange optical pumping (SEOP)
【机 构】
：
Institute of High Energy Physics,Chinese Academy of Sciences (CAS),Beijing 100049,China;Spallation N
论文部分内容阅读
At the China Spallation Neutron Source (CSNS),we have developed a custom gas-filling station,a glassblowing workshop,and a spin-exchange optical pumping (SEOP) system for producing high-quality 3He-based neutron spin filter (NSF) cells.The gas-filling station is capable of routinely filling 3He cells made from GE180 glass of various dimensions,to be used as neutron polarizers and analyzers on beamlines at the CSNS.Performance tests on cells fabricated at our gas-filling station are conducted via neutron transmission and nuclear-magnetic-resonance measurements,revealing nominal filling pressures,and a saturated 3He polarization in the region of 80％,with a lifetime of approximately 240 hours.These results demonstrate our ability to produce competitive NSF cells to meet the ever-increasing research needs of the polarized neutron research community.
其他文献
引子 1572年:文彭身将死,何震名欲扬rn明代隆庆、万历之交的前后几年,对于中国文人篆刻史而言,是较为关键的几年,文人篆刻史中万历以降的种种大事,都在隆庆、万历之交的前后
在清代,书学理论发生了由“帖学”向“碑学”的转变.虽然康有为的《广艺舟双楫》中“碑学”“帖学”这两个名词被正式提出,且直到清代晚期“碑学”书法才真正在书坛取得统治
在群英汇集的海派书画家中,有一位具有狂飙突进精神的开路先锋,他敢为天下先,筚路蓝缕而大胆开拓,接轨东西而放眼世界.他就是自称“艺术叛徒”的刘海粟.rn刘海粟(1896—1994)
“珠”字竖钩用笔先内擫后外拓;“问”字用笔映带,点画向背,竖钩用笔遒劲饱满;“往”字横画向背.rn“载”字横画用笔顺逆向背,斜钩细劲,结构宽博却不松散;“备”字结构左右穿
The non-Hermitian PT-symmetric system can live in either unbroken or broken PT-symmetric phase.The separation point of the unbroken and broken PT-symmetric phas
Knot theory provides a powerful tool for understanding topological matters in biology,chemistry,and physics.Here knot theory is introduced to describe topologic
The contact characteristic between p-InP and metal plays an important role in InP-related optoelectronic and mi-croelectronic device applications.We investigate
Polymeric nitrogen is a promising candidate for a high-energy-density material.Synthesis of energetic compounds with high chemical stability under ambient condi
On the basis of N-soliton solutions,space-curved resonant line solitons are derived via a new constraint proposed here,for a generalized (2 + 1)-dimensional fif
一、蒋光煦的家世生平rn蒋光煦出生于浙江海宁的蒋氏家族,据蒋氏宗谱的记载,其先祖蒋云风于康熙年间迁家至浙江海宁地区,以典当发家,其后辈大多进行藏书及书画鉴藏,尤以蒋楷