Workshop on Transients
June 8-11, 2015
General Atomics
San Diego, California

Chair: Charles Greenfield (General Atomics)
Co-Chair: Raffi Nazikian (Princeton Plasma Physics Laboratory)
DOE FES Liaison: Mark Foster


Registration is closed. Please contact Chuck Greenfield if you want to participate and haven't registered.

(please note that nobody can be allowed to attend without registering and paying the $23 registration fee)

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The panels and sub-panels have now collected community input in the form of 36 presentations made at the March 30-April 1 Community Input Workshop and 68 white papers. Since that time, these groups have worked very hard, using this input as source material, to produce a draft report. The purpose of the workshop will be to allow the community (and each other) to comment on the report and potentially make substantial changes to its content, mainly through discussions in the breakout sessions.

Since we have already allowed extensive community input and our deadline will only be weeks way, it will not be possible or practical to provide a forum to introduce new ideas - we assume at this point that those of you have have things to propose have already done so via the Community Input Workshop and white papers. There will be adequate time allowed for comments on the content or strategy implied by that content.

Working documents (white papers, preliminary report sections, presentations, etc.) will be made available to sub-panel members and registered workshop participants on a restricted website during the next day. I will post a link here. If you do not have access and think you should please contact me (Chuck Greenfield).

Note that this approach closely follows that of the 2009 Fusion Research Needs Workshop (ReNeW).

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Locations and remote participation instructions

SessionRoomRoom phone*Zoom ID
Plenary sessions15-019858-455-21508584552150
Full Disruption Panel15-019858-455-21508584552150
DIS-1Disruption Prediction15-019858-455-2150At chair's discretion
DIS-2Disruption Avoidance15-018858-455-2024At chair's discretion
DIS-3Disruption Mitigation15-224858-455-2136At chair's discretion
Full ELM Panel07-120858-455-2165TBD
ELM-1ELM Suppression or Mitigation with RMP07-120858-455-2165At chair's discretion
ELM-2Naturally ELM-free Operating Scenarios13-215858-455-3508At chair's discretion
ELM-3ELM pacing13-301858-455-4186At chair's discretion

*The room phone should only be used to contact somebody in the meeting. It is not for use as a speakerphone for remote participation.

Remote participation:

We will provide remote connections for the plenary and full-panel breakout sessions. Whether this is allowed for the sub-panel breakouts will be at the discretion of the sub-panel chairs. All of these rooms except 15-224 (where the Disruption Mitigation sub-panel will meet) have either a permanent or temporary videoconference system installed. If it is needed/wanted in 15-224 we can use a laptop for the connection.

Since this is a working meeting please be mindful of the need to complete our work. If the remote participation becomes disruptive (barking dogs, crying babies, typing sounds, etc.) we may be forced to either terminate it or restrict access with a PIN code.

IMPORTANT! Please mute your microphone (or telephone) unless you are speaking to the meeting.

  1. Using H.323-based Video Conferencing system
    • Dial (US West) or (US East)
    • You will then hear automated instructions.
    • Wait until the automated instruction message completes then press #nnnnnnnnnn#
  2. Using telephone
    • Dial +1 (415) 762-9988 or +1 (646) 568-7788
    • At the prompt, enter nnnnnnnnnn followed by the # sign.
  3. Using PC, Mac, iPad, iPhone or Android device
    • Open web browser.
    • Go to the URL
    • Note: If the attendee is joining from PC, Mac, iPad, iPhone or Android device for the first time they will have to install the Zoom Client.

Note: nnnnnnnnnn should be replaced with the Zoom ID for the meeting you're joining. Please remember to mute your microphone unless you are speaking.

Agenda (may change during the course of the workshop)

See session descriptions below.

Monday, June 8

We will begin in plenary session, and report to each other and the community on the progress made on the draft report. Late in the day we will divide into individual sub-panels to begin the process of incorporating community comments and suggestions into our report.
8:30 AM10Taylor: Welcome
8:40 AM10Foster: DOE Perspective
8:50 AM10Greenfield: Welcome and logistics
9:00 AM15Greenfield: Disruption Panel overview
9:15 AM30Sabbagh/Hegna: Sub-panel DIS-1 report
9:45 AM30Strait/Gates: Sub-panel DIS-2 report
10:15 AM15Break
10:30 AM30Izzo/Granetz: Sub-panel DIS-3 report
11:00 AM30Disruption panel discussion
11:30 AM60Lunch
12:30 PM15Nazikian: ELM panel overview
12:45 PM30Fenstermacher/Schmitz: Sub-panel ELM-1 report
1:15 PM30Hughes/Solomon: Sub-panel ELM-2 report
1:45 PM30Baylor/Jackson: Sub-panel ELM-3 report
2:15 PM30ELM panel discussion
2:45 PM15Break
3:00 PM120Discussion*
6:00 PMAdjourn

Tuesday, June 9

We will spend 5 1/2 hours in full panel breakout sessions. The expectation is that each panel will discuss all three of its sub-panel reports, thereby minimizing parallel discussions of potentially closely related topics. We will then return to plenary session to update each other on the breakout discussions and allow additional community discussion.
8:30 AM210Disruption Panel BreakoutELM Panel Breakout
12:00 PM60Lunch
1:00 PM120Disruption Panel BreakoutELM Panel Breakout
3:00 PM15Break
PLENARY SESSION: Sub-panel updates
3:15 PM15Sabbagh/Hegna: Sub-panel DIS-1 report
3:30 PM15Strait/Gates: Sub-panel DIS-2 report
3:45 PM15Izzo/Granetz: Sub-panel DIS-3 report
4:00 PM15Nazikian: Update on additional report section addressing pedestal and ELM physics that cross-cut the sub-panels
4:15 PM15Hughes/Solomon: Sub-panel ELM-2 report
4:30 PM15Baylor/Jackson: Sub-panel ELM-3 report
4:45 PM15Fenstermacher/Schmitz: Sub-panel ELM-1 report
5:00 PM75Discussion*
6:15 PMAdjourn

Wednesday, June 10

The panel-wide discussions will continue through the morning, and the afternoon will begin with sub-panel breakouts to work on the report content. We will end the afternoon with reports from each sub-panel on progress in their section of the report.
8:30 AM210Disruption Panel BreakoutELM Panel Breakout
12:00 PM60Lunch
SUB-PANEL BREAKOUT SESSIONS to discuss final report content
3:00 PM15Break
PLENARY SESSION: Sub-panel reports
3:15 PM30Sabbagh/Hegna: Sub-panel DIS-1 report
3:45 PM30Strait/Gates: Sub-panel DIS-2 report
4:15 PM30Izzo/Granetz: Sub-panel DIS-3 report
4:45 PM30Fenstermacher/Schmitz: Sub-panel ELM-1 report
5:15 PM30Hughes/Solomon: Sub-panel ELM-2 report
5:45 PM30Baylor/Jackson: Sub-panel ELM-3 report
6:15 PMAdjourn

Thursday, June 11

The full meeting wraps up in the morning with overviews of the full panel sections of the report, followed by additional community discussion. A smaller group will work through the afternoon on organizing writing of the final report.
8:30 AM45Greenfield: Disruption Panel report
9:30 AM45Nazikian: ELM panel report
10:00 AM15Break
10:15 AM90Discussion*
11:45 AM15Greenfield/Nazikian: Wrap-up and next steps
12:00 PMWorkshop adjourns
12:00 PM60Lunch
1:00 PMWriting committee organizes report
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Session Descriptions

Sub-panel breakout sessions

These sessions are targeted for discussion of the specifics of each sub-panel's report.

Panel breakout sessions

We envision that these will be broken down roughly ⅓:⅓:⅓ for discussion of individual sub-panel report sections. Allowing all three sub-panels to meet together will facilitate discussion among a larger group and aid in dealing with cross-cutting issues.

Discussion* sessions

Attendees at the Transients Workshop will have the opportunity to give brief comments at the beginning of the plenary discussion sessions. A signup sheet will be available and slots allocated on a first-come, first served basis. We suggest that your remarks focus on the opportunities being considered by the panels and sub-panels to address key short, medium and long term challenges based on critical unresolved issues essential for the success of ITER and future burning plasma devices. We discourage the introduction of new technical approaches that were not previously discussed in this workshop (e.g. presented at the March 30-April 1 Community Input Workshop) since it would be very difficult at this late stage of the process to incorporate those into our thinking.

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Where to Stay

We have been made aware that due to some event the same week as this workshop (we don't know what the event is) the GA contracted hotel rate is not available at most of the local hotels. The one exception, as of a few days ago, was the Residence Inn in Del Mar. Other hotels are listed on the General Atomics website. We are at the GA Headquarters site shown on the map. There are many other hotels in the area.

A list of local restaurants is here.

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