RF surface resistance study of non-evaporable getter coatings
نویسندگان
چکیده
منابع مشابه
The secondary electron yield of TiZr and TiZrV non-evaporable getter thin ®lm coatings
The secondary electron yield (SEY) of two different non-evaporable getter (NEG) samples has been measured `as received' and after thermal treatment. The investigated NEGs are TiZr and TiZrV thin ®lm coatings of 1 mm thickness, which are sputter deposited onto copper substrates. The maximum SEY dmax of the air exposed TiZr and TiZrV coating decreases from above 2.0 to below 1.1 during a 2 h heat...
متن کاملApplication of NEG Coatings on a Metal Surface and Measurements of its RF Properties
The Energy Recovery Linac (ERL) at Cornell University will require the use of thin film coatings for purposes of achieving Ultra High Vacuum (UHV). At this point, various pipe coatings have been widely used in the field of particle accelerator physics. The vacuum properties of pipe coatings are well documented and have given rise to its popularity in the field. A Non-Evaporable Getter (NEG) coa...
متن کاملExperience in Reducing Electron Cloud and Dynamic Pressure Rise in Warm and Cold Regions in Rhic*
The large scale application of non-evaporable getter coating in RHIC has been effective in reducing the electron cloud. Since beams with higher intensity and smaller bunch spacing became possible in operation, the emittance growth is of concern. Study results are reported together with experiences of machine improvements: saturated NEG coatings, anti-grazing ridges in warm sections, and the pre...
متن کاملA STUDY OF TiAlN COATINGS PREPARED BY RF CO-SPUTTERING
Using the reactive magnetron rf co-sputtering technique and a Ti target partially covered with a small Al plate, TiAlN coatings were made on c-Si in a reactive atmosphere of nitrogen and argon. Coatings were deposited on substrates at 22°C and at 150°C. The substrate temperature notably affected the thickness, crystalline grain size, and hardness of the coatings. We analyzed the dependence of b...
متن کاملthe study of bright and surface discrete cavity solitons dynamics in saturable nonlinear media
امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 2017
ISSN: 0168-9002
DOI: 10.1016/j.nima.2016.11.039