TRIUMF cyclotron RF system reliability enhancement

This paper presents recent RF system improvements related to the cyclotron resonators, RF amplifiers, and transmission lines. Although the program is not complete, the downtime due to rf sparking has already been reduced by a factor of 5.Обсуждаются усовершенствования ВЧ-системы: резонаторов циклотрона, ВЧ-генераторов, питающего волновода. Часть работ к настоящему времени завершена, что привело к уменьшению простоев из-за ВЧ- пробоев в 5 раз.Обговорюються удосконалення ВЧ-системи: резонаторів циклотрона, ВЧ-генераторів, що живить хвилевід. Частина робіт вже виконана, що дало зменшення простоїв через ВЧ-пробої у 5 разів

Progress and challenges to the global waste management system

Rapid economic growth, urbanization and increasing population have caused (materially intensive) resource consumption to increase, and consequently the release of large amounts of waste to the environment. From a global perspective, current waste and resource management lacks a holistic approach covering the whole chain of product design, raw material extraction, production, consumption, recycling and waste management. In this article, progress and different sustainability challenges facing the global waste management system are presented and discussed. The study leads to the conclusion that the current, rather isolated efforts, in different systems for waste management, waste reduction and resource management are indeed not sufficient in a long term sustainability perspective. In the future, to manage resources and wastes sustainably, waste management requires a more systems-oriented approach that addresses the root causes for the problems. A specific issue to address is the development of improved feedback information (statistics) on how waste generation is linked to consumption

RELIABLE PRODUCTION OF MULTIPLE HIGH INTENSITY BEAMS WITH THE 500 MEV TRIUMF CYCLOTRON

In 2001, after 25 years of smooth cyclotron operation with up to 200 μAH− acceleration, developments towards higher intensities became compelling because of the ISAC expansion. Recently the goal of reliable total proton production current up to 300 μA, within a nominal∼90% duty cycle, was routinely achieved. Beam availability was 90- 94% over the last five years. Development highlights are discussed in the paperIMP;Chinese Academy of Science