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Latest News
What’s the most difficult question you’ve been asked as a maintenance instructor?
Blye Widmar
"Where are the prints?!"
This was the final question in an onslaught of verbal feedback, comments, and critiques I received from my students back in 2019. I had two years of instructor experience and was teaching a class that had been meticulously rehearsed in preparation for an accreditation visit. I knew the training material well and transferred that knowledge effectively enough for all the students to pass the class. As we wrapped up, I asked the students how they felt about my first big system-level class, and they did not hold back.
“Why was the exam from memory when we don’t work from memory in the plant?” “Why didn’t we refer to the vendor documents?” “Why didn’t we practice more on the mock-up?” And so on.
Masayuki Yoshikawa, Kalsunori Ikeda, Yuuji Okamoto, Eiichiro Kawamori, Shinji Kobayashi, Yousuke Nakashima, Atsushi Mase, Teruji Cho, Naohiro Yamaguchi, Teruo Tamano, Kiyoshi Yatsu
Fusion Science and Technology | Volume 35 | Number 1 | January 1999 | Pages 273-277
Oral Presentations | doi.org/10.13182/FST99-A11963866
Articles are hosted by Taylor and Francis Online.
We have constructed a 2-dimensional Hα line-emission measurement system in order to study neutral hydrogen behavior. We can obtain 2-dimensional radial profiles of hydrogen density by considering a collisional-radiative model. We have also constructed space- and time-resolving spectrograph system in the range of vacuum ultraviolet (VUV). 15–105 nm. studying ion density profiles which directly relates to impurity transport. We measure both Hα line-emissions and VUV spectra from the hot ion mode plasmas in the GAMMA 10 for studying plasma particle confinement and impurity behavior. We found that both particle and energy confinement of the GAMMA 10 plasma was slightly improved during electron cyclotron resonant heating (ECRH) over that without ECRH. From the VUV measurement it is concluded that the impurity ions mainly came into the plasma during its formation phase.
