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Boron/Lithium start-up

Explore the implications of Boron without Lithium in fusion start-ups, discussing potential benefits and drawbacks, resolving HHFW Lithium issues, easier achievement of ELMing H-Mode, density control, and more. Delve into studies on ELM, pedestal, snowflake divertor, impurity source, and density control. Analyze the coating of Mo with C/B, time consumption for conditioning, removal of B/C layer, and Boron's impact on Lithium performance. Discover the equivalent ELMy discharges without Boron and the time needed for the Boron phase. Evaluate the link between low Lithium levels, good performance, and HHFW functionality. Highlight the positive effect of less C and O on CHI and assess the schedule impact.

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Boron/Lithium start-up

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  1. Boron/Lithium start-up

  2. What does Boron with no Li get us? • Potential benefits from no Li • HHFW Li issues resolved • ELMing H-Mode easier to achieve • Density control • Li comparison redux • ELM, pedestal, snowflake divertor, impurity source and density control studies • Potential down-side to boron • Will coat Mo with C/B • Will consume run time to condition first • May require time to remove B/C layer

  3. Unknowns • Will Boron hamper Li performance later • Equivalent ELMy discharges w/o Boron • How much time for boron phase • Will low levels of Li permit good performance while allowing HHFW to work • CHI less C and O is good • Schedule impact

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