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首页> 外文会议>International Cryogenic Materials Conference >Compression and thermal conductivity tests of Cryogel~R Z for use in the ultra-transparent cryostats of FCC detector solenoids
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Compression and thermal conductivity tests of Cryogel~R Z for use in the ultra-transparent cryostats of FCC detector solenoids

机译：Cryogel〜R Z的压缩和导热性试验用于FCC探测器螺线管的超透明低温恒温器

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The Future Circular Collider(FCC)study includes the design of the detector magnets for the FCC-ee~+(electron-positron)collider,requiring a 2 T solenoid for particle spectrometry,and for the FCC-hh(proton-proton)collider,with a 4 T detector solenoid.For both solenoids and their cryostats,CERN is developing an innovative and challenging design in which the solenoids are positioned inside the calorimeters,directly surrounding the inner tracker.For this purpose,the cryostats must be optimized to have maximum radiation transparency.They are structured as a sandwich of thinnest possible metallic shells for achieving vacuum tightness,supported by layers of low density and highly radiation transparent insulation material,still providing sufficient mechanical resistance and low thermal conductivity.In this respect,thermal and mechanical analysis of innovative insulation materials are currently being carried out.The first material of interest,Cryogel~R Z,is shaped as a flexible composite blanket,which combines silica aerogel with reinforcing fibers and a density of 160 kg/m~3.It allows a 4 m bore,6 m long FCC-ee+ detector solenoid cryostat with a total thickness of 250 mm.CERN has investigated the compression of Cryogel~R Z under 1 bar equivalent mechanical load and its thermal conductivity between 10 K and room temperature,as well as the critical phenomena of thermal shrinkage and outgassing.We present the test results,as a first overview on the material.
机译：未来的圆形撞机（FCC）研究包括用于FCC-EE〜+（电子 - 正电子）撞机的检测器磁体的设计，需要2 T螺线管用于粒子光谱法，以及FCC-HH（Proton-Proton）撞机，有4个探测器螺线管。对于螺线管和它们的低温恒温器，CERN正在开发一种创新和具有挑战性的设计，其中螺线管位于热量计内，直接围绕内部跟踪器。必须优化低温仪，必须优化最大辐射透明度。该透明度是薄薄的可能金属壳的三明治，用于实现真空密度，由低密度和高度辐射透明绝缘材料层支撑，仍提供足够的机械电阻和低导热性。在这方面，热和机械目前正在进行创新绝缘材料的分析。首批感兴趣的材料，CryoGel〜RZ，塑造为柔性复合毯，将二氧化硅气凝胶与增强纤维相结合，密度为160 kg / m〜3.允许4米的孔，6米长的Fcc-ee +探测器电磁阀螺线管低温恒温器，总厚度为250 mm.cern已经调查了Cryogel的压缩〜RZ在1巴等当量机械负载下，其导热率为10 k和室温，以及热收缩和除气的临界现象。我们介绍了测试结果，作为材料的第一概述。

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