Modernization of an existing X-band EPR spectrometer

现有 X 波段 EPR 光谱仪的现代化改造

• 批准号: 534394762
• 金额: --
• 依托单位: Technische Universität Braunschweig
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2024
• 资助国家: 德国
• 起止时间: 2023-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/534394762?language=en
• 关键词: Modernization; existing; band; EPR; spectrometer

The currently existing instrument, consisting of an X-band EPR spectrometer with cryostat unit and high-temperature setup, has been operated at the Technische Universität Braunschweig for more than 25 years. The analog transputer interfaces have been listed as "out-of-service" by the manufacturer for some time, which means that in case of failure a simple 1-to-1 replacement or repair of the instrument, which is important for our research, is no longer possible. No other EPR spectrometer is operated at the Technische Universität Braunschweig. Therefore, in order to avoid a replacement-less or longer-term failure of the instrument important for our research, the notified project "Modernization of an existing X-band EPR spectrometer" shall (A) replace the currently still analog transputer interfaces including the microwave bridge by a digital upgrade. In addition, (B) the existing (T102 mode) resonator will be supplemented by a dual-mode (T102 and T012 mode) resonator for the investigation of forbidden transitions in transition metal and lanthanide compounds. A positive aspect here is that the envisaged dual-mode resonator has a higher sensitivity by a factor of approx. 1.5 compared to the existing resonator. Also of great importance is the replacement of (C) the cryostat unit and (D) the heat exchanger (for the existing 10'' magnet together with the 12 kW power supply), since these components no longer work reliably within their technical specifications after long operation. In order to limit costs, the existing 10'' magnet including 12 kW power supply can and should be integrated into the new setup and continued to be used. Modernization of the components of the existing high-temperature setup that are no longer functional with the digital upgrade (A) is not to be pursued in this application and will be implemented at a later date.

目前现有的仪器，包括一个X波段EPR光谱仪与低温恒温装置和高温设置，已在工业大学布伦瑞克超过25年。模拟晶片机接口已经被制造商列为“停止服务”一段时间了，这意味着在发生故障的情况下，不再可能对仪器进行简单的1对1更换或维修，这对我们的研究很重要。布伦瑞克工业大学没有其他EPR光谱仪。因此，为了避免对我们的研究很重要的仪器出现故障或长期故障，已通知的项目“现有X波段EPR光谱仪的现代化”将（A）通过数字升级取代目前仍然存在的模拟晶片机接口，包括微波桥。此外，（B）现有的（T102模）谐振腔将由双模（T102和T012模）谐振腔补充，用于研究过渡金属和镧系化合物中的禁戒跃迁。这里的积极方面是所设想的双模谐振器具有约为1/3的更高灵敏度。1.5与现有的谐振器相比。同样重要的是更换（C）低温恒温器单元和（D）热交换器（对于现有的10“磁体和12 kW电源），因为这些部件在长期运行后不再在其技术规格范围内可靠地工作。为了限制成本，现有的10“磁铁（包括12 kW电源）可以也应该集成到新的设置中并继续使用。本申请中不对数字升级（A）后不再起作用的现有高温设置组件进行现代化改造，将在以后实施。