K–Te photocathodes: A new electron source for photoinjectors
نویسندگان
چکیده
منابع مشابه
Patterned negative electron affinity photocathodes for maskless electron beam lithography
This work focuses on two issues crucial to achieving high throughput with a negative electron affinity semiconductor photocathode source. Monte Carlo simulations indicate that for a 50 kV system, as much as 8 mA of current may be delivered to the wafer to achieve a raw throughput of 20 8 in. wafers per hour with 0.1 mm minimum feature size ~assuming a resist sensitivity of 10 mC/cm!. In order t...
متن کاملa new approach to credibility premium for zero-inflated poisson models for panel data
هدف اصلی از این تحقیق به دست آوردن و مقایسه حق بیمه باورمندی در مدل های شمارشی گزارش نشده برای داده های طولی می باشد. در این تحقیق حق بیمه های پبش گویی بر اساس توابع ضرر مربع خطا و نمایی محاسبه شده و با هم مقایسه می شود. تمایل به گرفتن پاداش و جایزه یکی از دلایل مهم برای گزارش ندادن تصادفات می باشد و افراد برای استفاده از تخفیف اغلب از گزارش تصادفات با هزینه پائین خودداری می کنند، در این تحقیق ...
15 صفحه اولA new topology for quasi-Z-source inverter
In this paper, a new circuit is proposed for step-up Z-source inverter based on QZSI (quasi-Z-source inverter). The proposed topology inherits all advantages of the conventional topology. The proposed topology in comparison with conventional topology reduces the ST (Shoot-through) duty cycle by over 25% at the same voltage boost factor. Theoretical analysis of the proposed qZSI in the ST and no...
متن کاملA New Topology for Z-Source Inverter Based on Switched-Inductor and Boost Z-Source Inverter
In this paper, a new topology for boost Z-source inverterbased on switched-inductor cell is proposed. The operating modes of the proposed inverter are analyzed and also a suitable control method to generate the trigger signals of the inverter is presented. Having a common earth between the input source and inverter and capability to generate a higher voltage gain by using lower amounts of the d...
متن کاملSimulation Issues for RF Photoinjectors
Accurate simulation of radiofrequency photoinjector performance remains a challenge in predicting the performance of future linear colliders and next-generation light sources. Calculated performance consistently and significantly exceeds measured performance. This discrepancy can be traced to two principal sources: measurement uncertainty and unrealistic assumptions and approximations made in t...
متن کاملذخیره 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: Journal of Applied Physics
سال: 1997
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.365915