E. Joffrin 22 th Nov. 2010

1. Organisation of JET Operation E. Joffrin 22th Nov. 2010

2. Welcome to the Session Leader Training Tutor/lecturers. P. Lomas (POG GL, ESL) F. Rimini (CSU program ESL) I. Nunes (CSU Ops group fully qualified) S. Jachmich (POG, fully qualified SL) P. De Vries (DTFL E1, fully qualified SL) E. Joffrin (DTFL E2, ESL) Local organisation: J. Dalton (K1/1/109) Offices: J. Waghorn (K1/1/09)

3. Training agenda Control room

4. EFDA Associations Steering Committee EFDA Associate Leader for JET Head of Close Support Unit (CSU) Culham Francesco Romanelli Organisation & Management Responsible for use of JET facilities: experiments, shut-downs, enhancements OPERATION UK Atomic Energy Authority (400-500 personnel) SCIENTIFIC WORK CSU (~300 physicists) ENHANCEMENTS CSU (~35 staff) Responsible for planning and execution of experiments Responsible for operations, safety, plant protection…

5. Scientific/ Technical JET Operation CCFE senior manager for JET JET EFDA CSU ATO holder Chief engineer Work programme (JPEC) Coordination/operation meeting EiC CCFE / Operator SL SC DC Task Forces Control room staff Associations

6. The Control Room Local Rules What are these for? • Specify working arrangements and duties in particular areas • Provide link between plant safety case and working level arrangements Define in some detail the roles of the Senior Management Team: • Engineer in Charge • Session Leader • Scientific Co-ordinator • Diagnostic Co-ordinator http://users.jet.efda.org/pages/torus-ops/pages/local-rules/index.html

7. JET control room

8. CR senior management team SC SL2 (trainee) SL EiC DC

9. The Role of the Engineer in Charge The Engineer in Charge (EiC) is primarily responsible for: • Safety of Personnel • The safe operation of JET • The co-ordination and final approval of all activities in operational areas. The position is wholly within the operator and reports to: • The Chief Engineer • Holder of the Authority To Operate (ATO) • Ultimately to the Facility Senior Manager. Assisted by: • Power Supply Operation Engineer (PSOE), CODAS Duty Officer (CDO), subsystem shift leaders (NBSL, RFSL, …) and pilots, the shift technician and Incident Response Officer. Note: the EiC has the ultimate responsibility to ensure that operation is within JOIs. He may decline to execute a pulse which he believes might lead to the violation of these limits.

10. Control room layout SL2 PDO CO SL PSOE Diagnotics RO DC EIC NBSL RP+SC ST CDO PLSL Diagnotics RO LHSL RFSL The SL interacts during the session with a large number of people. Good preparation of a session is therefore mandatory (see F. Rimini’s course)

11. The Role of the Diagnostic Co-ordinator The Diagnostic Co-ordinator (DC) is primarily responsible for:- • Co-ordinating and monitoring the operation of required diagnostics. • Shares responsibility with SC and DC for best use of operational time. • Proper operation of diagnostics within Operation Instruction limits. Before,defines diagnostic requirements with SL and SC, communicates with Task Force D Co-ordinators and iterates. During,ensures optimum settings of diagnostics, monitors data quality, interprets data, activates preliminary data validation, updates summary display, calls out staff to fix problems, reports faults. After,reports on diagnostic performance, summarises preliminary data validation and interpretation, identifies shots for further analysis The position reports to: • The Task Force Leader (or deputy) • Diagnostic fault reporting via Co-ordination Meeting (Operations). The DC will be an expert in fusion research and will be familiar with JET diagnostics

12. The Role of the Scientific Co-ordinator The Scientific Co-ordinator (SC) is primarily responsible for:- • Efficient scientific exploitation of an experiment. • Shares responsibility with the SL for effectiveness of the programme. Before,co-ordinates preparation with SL, DC and TFL During,monitors scientific progress and steers scientific direction After,reports progress and supervises long term analysis and publication If SC not rostered responsibilities are transferred to Session Leader The position is wholly within the Task Force and reports to:- • The Task Force Leader (or deputy) • Ultimately (via the CSU) to the Associate Leader for JET. The SC will be an expert in fusion research but not necessarily experienced in the operation of JET

13. The Role of the Session Leader The Session Leader (SL) is primarily responsible for:- • Detailed specification, preparation and execution of the session. • Shares responsibility with SC for effectiveness of the programme. • Particular “duties of care” to UKAEA in operation of JET. Before,Transforms scientific outline into an executable pulse schedule, ensures necessary resources available and all approvals in place. During,oversees the execution of the experiment, specifies the series of pulses required, ensures that these are designed compliant with Operation Instructions (JOI), communicates these requirements to the EiC and maintains the pulse log. After,completion of Session Report, assists SC in drawing conclusions of the session, reports operational difficulties. The position reports to: • The Task Force Leader (or deputy) on scientific issues. • Co-ordination Meeting (operations) on technical issues. Session leaders will be an expert in fusion research and skilled in the operation of JET

14. Duties of the Session Leader Duty of care to CCFE In order to promote efficient and effective conduct of safe operations, SL has a “duty of care” to assist the EiC in avoiding plasma operation which might hazard the machine or which could lead to a violation of JET operation Instructions (JOIs). SL: the first line of defence Qualification SLs are required to be skilled in the operation of JET. Qualifications and experience of potential session leaders will be reviewed and accepted by the Operator  list of expert (ESL), fully qualified, and part-qualified session leaders is maintained in the level 1 system Limits and trips at power supplies or at the coils Schedule Validation Session Leader “good practice” Prepulse Checks (EiC) Limit Avoidance in control

15. As a trainee at JET… Your progress as Trainee is recorded by your supervising Session Leader (SL1). SL1 can use this to indicate areas where further study might be helpful. Uncontrolled Copy The information recorded here is used by POG and CE to asses when you are ready for a restricted licence which allows you to fulfil the role of SL1 It is in your interest to make sure this record is up to date!

16. The responsibilities and duties of the Session Leader are not to be undertaken lightly. However you should not be daunted, we are there to give you training and back-up. As a fully trained Session Leader on JET you will be able to make a significant contribution both to the technical and scientific aspects of the fusion programme. This you should take on as a suitably challenging personal objective. We look forward to the time when some of you will be performing a similar role on ITER.

18. Uncontrolled Copy

19. Control room Control room exercises E. Joffrin 22th Nov. 2010

20. The exercises • MAXFEA • Maxfea is a program solving numerically the equilibrium for JET • This exercise has the objective to give you some basics of magnetic configurations design at JET. • What went wrong • This exercise consist of several questions on chosen pulses. In each pulse something happened which caused an error • It has the objective to make you familiar with the SL analysis tools and of some of most common plasma faults. • Pulse schedule • This exercise consist of several questions on the pulse schedule editor (xpsedit) and the design of a new pulse type for experiments. • It has the objective to introduce you to the pulse schedule editor • Debugging • You are here put in the situation where you inherit an imperfect pulse schedule from another session leader. • This exercise has the objective to identify mistakes in a pulse type

21. Making use of the tools • Use all the tools • DAP in xpsedit • JOTTER (xjlsforms jotter) • JETDSP on jac • Pulse Logs: http://jlswebhost.jet.efda.org:8087/jls/index.html • XG on solaris • XPAD on solaris • Mimics on solaris • Look for comparison • Comparison DAP in xpsedit • Similar pulses from the same experiment • whole sessions/exp. • Do your own analysis • Beware: JOTTER may be wrong • Find alternative (better) solutions • Know how to find information • Plasma Ops Web or other web resources: http://users.jet.efda.org/pages/s1-task-force/Documentation/ExperimentsGuide.html • Data handbook or distributed signal list and JETDSP standard sets http://users.jet.efda.org/pages/data-dmsd/jetdatahandbook/web/php/contents.php • Pulse logs http://jlswebhost.jet.efda.org:8087/jls/index.html • JOI http://users.jet.efda.org/pages/torus-ops/pages/op-instructions/index.html

22. About this exercise • Don't be afraid to ask: there are 6 tutors here to help •  Collaborate and exchange information between you. • Ask about limits, configurations and complicated pulses •  Plasma Ops Group, Engineering Analysis Group • Ask about the experiments or previous pulses •  Other SL's, expert SC/SL, • Ask about other sub-systems • NBI/ ICRH/ LHCD/ PELLET • The exercises are independent from each other. You can do them in any order. • Some of the answers can be found during the formal courses • Please note that we are also interested by your approach to the questions to the exercise, not only to the actual score you get at the end. • The paper copies must be handed over to one of the tutors before 18:00 on Thursday for correction. • Answers to each exercise will be given on Friday at 14:00

24. Pulse 51578 -4 x 10 4 200pT/A 3 2 Mode Lock 1 0 40 41 42 43 44 45 46 2 Ip [MA] 1.5 1 0.5 0 40 41 42 43 44 45 46 Time [s]

25. About the exercise • Assessment • Practise tools • Pulse schedule editor • JETDSP, other signal analysis programmes • JOTTER and how to find additional information • Analysis skills • Understand tokamak and plasma physics • Prepare for experiments • What to do in case of problems