April 18-19 2002, Cluj-NapocaRoEduNet ConferenceSlide 1 Remote Participation in physical experiments...

April 18-19 2002, Cluj-Napoca RoEduNet Conference Slide 1

Remote ParticipationRemote Participation in in physical experiments physical experiments

Piroska Giese

KFKI RMKI e-mail: [email protected]

Yahoo ID: kfki_Piroska_Giese


OverviewOverview Introduction

Remote Participation in Fusion

Motivation, Methods, Tools

Remote Participation Technical Measures

1.Remote Data Access

2.Remote Computer Access

3.Telecommunications – Tele-Collaboration

4.Network Connectivity

5.Support and Documentation

Summary

Links and References


Nuclear FusionNuclear FusionThe world energy needs increase!

Nuclear Fusion is the energy producing process which takes place in the sun and stars (H is converted to He providing energy) For energy production on earth the most

suitable reaction occurs between two nuclei - Deuterium and Tritium.

The required temperature 100 Mill. deg. C fuels change its state from gas to PLASMA

Fuels - plentiful in earth Deuterium – can be extracted from water Tritium - doesn’t occur naturally it will be

manufactured from Lithium


TOKAMAK – TOKAMAK – ““toroidal magnetictoroidal magnetic

chamberchamber””

Parameters:Diameter 15 mHigh 12 mPlasma major radius 2.96 mFlat-top pulse length 20 sWight of the iron core 2800 tToroidal magnetic field 3.45 TPlasma current 3.2 –

4.8MAHeating power 25 MW

JEJETT--JJoint oint EEuropean uropean TTorusorus ((UKAEA – Culham, UK)UKAEA – Culham, UK)

the most successful experimental fusion device for controlled fusion reaction the plasma is heated in a toroidal vessel and confined away from the vessel walls by magnetic field


Inside the toroidal vacuum vessel, showing the Plasma (the high of the vessel: 4,2 m)


Pulse preparationonline/offline/remote

Control setup

Diagnostic setuponline

Countdownonline

Pulse25 / day

Data collection

online

1 GB / pulse

Intershot Analysis

onlineData Storage

4TB~55000 pulse

Data Displayonline/offline

Futher Analysis

offline

The The JET JET Pulse CyclePulse Cycle


WEB service Documentation Remote Participation

JET computer systemJET computer system

Data collection, storage Solaris system Storage Tek Silo 230TByte

Analysis Linux Cluster (Red Hat7.1)

56 nodes: Athlon/Intel proc.

13 Gflops/sec

JETNET local network

• office computers

• PC, Terminal & ICA Server


Remote Participation in Remote Participation in FusionFusion


Remote Participation in FusionRemote Participation in Fusion 1957 – Euratom Treaty creating “ Fusion Associations

– Traditionally high mobility and many inter-Association links

Pre-1998 RP is limited by both local politics and technology restrictions.

– However many examples of inter-collaborations and especially joint work with the JET Joint Undertaking

1999 establishment of EFDA. – Improved efficiency of resources required (human and material) .

– Modern techniques make RP more viable.

1999/2000/2001 “ User Meetings” define RP needs for EFDA-JET

2000/2001 Creation of EFDA-JET RP Technical Project– Scientific exploitation of JET jointly by Task Forces from the more than 20

EFDA Associate laboratories.

– Strong support by the JET “Operator” (UKAEA Culham Division) 2000 - Association EEUURATOM/HAS RATOM/HAS (KFK(KFKi i RMKI, KFKI AEKIRMKI, KFKI AEKI, , BMGE)BMGE)


European Magnetic Fusion CentresEuropean Magnetic Fusion CentresNew

New

New(Bucharest)

(Budapest)

(Prague)


RP - MotivationRP - Motivation Essential for a viable JET Scientific programme within the new

framework.

Immediate needs driven by USER REQUESTS and/or existing utilities

Strong political backing – Busquin, Mitsos and EFDA – « prototype European Research Area » The subject is « à la mode »

Desire to reduce Mission Costs

Desire to create closer « European Fusion Community »

Desire to make more efficient use of existing resources and facilities – Investment Budget in Fusion >> Operational and manpower resources.

Counter ArgumentsCounter Arguments Undermines Association Autonomy Reduces human contact/interaction Resources in Fusion are already too widely stretched (fear of closure of

local facilities in favour of RP) Requires too much « support »


RP MethodsRP Methods

The RP project includes five subjects:The RP project includes five subjects:

1. Remote Data Access – transfer of data across the web

2. Remote Computer Access – log in remotely to computers

3. Telecommunication – Office, Control Rooms and Seminars

4. Network Connectivity - best use of European Networks

5. Support and Documentation

No ready-to-use solutionNo ready-to-use solution


RP Working MethodsRP Working Methods

Feasibility Studies Specifications Purchase and Commissioning Organisation of Support.

• CComprehensive Data Base established of omprehensive Data Base established of “desires”.“desires”.

• Work at JET supported by the UKAEA-OperatorWork at JET supported by the UKAEA-Operator

• Specific Work in the Associations by Specific Work in the Associations by “Notification" contracts.“Notification" contracts.

• Formation of topical “Study Groups” for Formation of topical “Study Groups” for particular issues.particular issues.

The subjects are handled by four The subjects are handled by four working methods:working methods:


RP ToolsRP Tools

Aim: “Fusion-Standard” RP ToolkitsAim: “Fusion-Standard” RP Toolkits

Requirements: platform-independent or at least multi-platform

tools Shareware or freeware solutions with source code

access are strongly preferred Internet-based Communications Compatibility as far as possible with existing

infrastructures (priority JET)


RP Technical ProjectRP Technical ProjectStarted in 2000Started in 2000

• Two technical coordinators:– Volker Schmidt, Conzorcio RFX, Euratom-ENEA sulla

fusione

I-35127 Padova, Italy

e-mail: [email protected] Yahoo Messenger ID:RFX_Volker_Schmidt

– John A. How, Euratom-CEA, DRFC, CEA-Cadarache F-13108 Saint-Paul-Lez-Durance, France

e-mail: [email protected]

Yahoo Messenger ID: DRFC_John_How


Remote Participation Remote Participation

Technical MeasuresTechnical Measures


1. Remote Data access - RDA1. Remote Data access - RDA

Requires Client Access Program and support Unix, PC, Mac, Linux

Requires reasonable network bandwidth typical data transfers are 2Mb/s = 250kbaud/s = 16secs for 1Meg of 32bit data

Requires efficient Central data server (and tape recall)

Desirable to have some local data cache to avoid transfer of the same signal many times

The JET-RDA client/server system makes The JET-RDA client/server system makes JET's scientific databases available over JET's scientific databases available over the Internet.the Internet.


RDA structure - overviewRDA structure - overview

An extension of IIS web server running on Windows Uses HTTP and NetCDF Requires username/password


2. Remote Computer access - RCA2. Remote Computer access - RCA

Remote log on to a distant computerRemote log on to a distant computer.. Complements RDA approach. Only the screen is sent across the network, not the data.

Widely used for many yearsWidely used for many years. EFDA JET Policy - Remote Collaborators can EFDA JET Policy - Remote Collaborators can

have the same remote platform as within a have the same remote platform as within a JET Office.JET Office. internal firewalls, protocols and passwords control

Security issues are Security issues are the the paramount aspect in paramount aspect in the chosen solutionthe chosen solution(s).(s).


RCA ImlementationRCA Imlementation

There are a number of Windows server running CITRIX Metaframe

Remote clients use CITRIX ICA client (Independent Computer Architecture)– Available for most platform– High performance over slow links user configuration is required


RCA Two-step AuthenticationTwo-step Authentication

1. Remote CITRIX ICA client sets up the contact to CITRIX Metaframe server JET remote access username/password

2. SecurID token card at the firewall PIN code+SecurID card “token”

Logon to JET computers

- Office PC network (Win2K) - Internal Web - Linux cluster - Solaris system

JET local Username/password


RCA – RCA – why is neededwhy is needed??

Remote execution of interactive tasks– Sun/Solaris (session leader tools, monitoring, diagnostics) – JAC (Submission of simulation/analysis codes)– Office PC systems (shared task force drives, staff on

mission)– (ultimately) active remote control of equipments

Access to internal JET web Technical documentation, Shift rosters, Inventories, LOG

files, etc

Remote system administration


3. Telecommunications Scenarios3. Telecommunications ScenariosTele-collaboration includes a wide range of arrangements:

Desktop dialogue: two scientists that want to discuss

and share interactively documents on their desktops Office-based Meetings: small groups communicate

via audio and, possibly live video, interactively sharing documents on their desktop

Broadcast meeting: broadcasting only, without remote interaction – e.g. Science Meeting

Fully interactive “Multi-centre Meetings”: participants in meeting rooms at different sites

JET Task Force Meetings, Formal presentations Remote Control Room Extension:

– possibility to interact with the JET control room in real time– combination of teleconferencing, broadcasting, and remote

computer access


Tele-collaboration Toolkit (1)Tele-collaboration Toolkit (1)Virtual Rooms Videoconferencing SystemVirtual Rooms Videoconferencing System

- Audio & Video

- Caltech development for LHC community

• Multi-platform public domain software

(Windows, Unix, Linux, non-interactive version for MacOS )

• based on the concept of Virtual Meeting Rooms

• based on Mbone tools: VIC and RAT

• interoperable with H.323 videoconferencing system

(MS “NetMeeting”, Intel “Internet Video Phone”)


VRVS Model VRVS Model - - ImplementationImplementation

Network Layer (TCP/IP)Network Layer (TCP/IP)

Qo

SQ

oS

VRVS Reflectors (Unicast/Multicast)VRVS Reflectors (Unicast/Multicast)

Real Time Protocol (RTP/RTCP)Real Time Protocol (RTP/RTCP)

Mbone Mbone ToolsTools

(vic, vat/rat,..)(vic, vat/rat,..)

QuickTimeQuickTime

V4.0H.323H.323 MPEGMPEG

OthersOthers

????

Co

llabo

rativ

e

Co

llabo

rativ

e

Ap

plic

atio

ns

Ap

plic

atio

ns

VRVS Web User InterfaceVRVS Web User Interface


VRVS ReflectorsVRVS Reflectors


Sceduler in VRVSSceduler in VRVS


Tele-collaboration Toolkit (2)Tele-collaboration Toolkit (2)

VVirtual irtual NNetwork etwork CComputingomputing

Interactive Shared Desktop Tool VNCInteractive Shared Desktop Tool VNCResult of a collaboration between Oracle and Olivetti developed by AT&T

- VNCserver - VNCviewer client - Multi-platform server, Viewer client is very small

VNC is a cheap alternative to CITRIX ICA Can be used to logon to JAC and Solaris system Can be used either from a WEB browser or a standalone client utility Secure ID authentication has to be implemented by the user

Normally VNC is used to provide users with remote access to

their desktop. At JET is used to provide full X access by

creating virtual X terminal via inetd service on a Solaris

system


JTV – JET TelevisionJTV – JET TelevisionOn VNC based Web streamingOn VNC based Web streaming

• JTV – web browser/Java based image broadcast– 10 channels of live control room data– one channel low webcam view of the Session leader– one channel for the broadcast of sliedes for conference


JTV Real-Time Screen Broadcast UtilityJTV Real-Time Screen Broadcast Utility


Tele-collaboration Toolkit (3)Tele-collaboration Toolkit (3) Real-time dialog CHATReal-time dialog CHATuseful as self-documenting toolessential addition to teleconference during set-up

public server

replaces telephone calls

Spaniel Chat private server secure Control room communication


4. 4. Network ConnectivityNetwork Connectivity Sufficient network connectivity is required

throughput, response time, reliability All European fusion laboratories are connected through

TEN-155 or GEANT 2.5GB/s But some local connections are presently insufficient

Network Monitoring is essentialNetwork Monitoring is essential A small study group (monitoring web sites) Used desktop tools

•Pingplotter - traceroute, store, accumulate, re-plot data•Qcheck - testing of network performance

response time, throughput, availability lost of packets for TCP, UDP, SPX, IPX Future IssuesFuture Issues

Unified Network Security Internet Traffic Priorities

Virtual Private Network Virtual Private Network (VPN)(VPN) ??


5. Support and Documentation5. Support and Documentation

Central Support at JET– Supports Task Force programme– Includes Local JET Facility Documentation on Internal Web– Excellent Europe Wide EFDA-JET USERS WEB (restricted access)

Includes major section on “Remote participation”

In the Associations • Active Users Group and Technical Contact Persons for RP• Support Teams in most laboratories • Some local documentation

Europe-Wide Organisation– Two Technical Coordinators for the EFDA-JET RP project– Central EFDA and ITER public web sites http://www.efda.org/


SummarySummary

References, LinksReferences, Links


SummarySummary“Shared-facility” mode since January 2000

The « Remote Participation » Technical Infrastructure for European Fusion Research has been organised

• JET is operating under the new shared-exploitation scheme

• approximately 300 scientists regularly use the RP

techniques for JET Work

• Active Users Group and network of

Technical Contact Persons


Summary Summary (cont)(cont)

• Many physicists are only periodic visitors to the JET site

• Support of experiment sessions is shared between on-site and off-site staff

• Data analysis is run (remotely) on JET-based computers and on computers at the partner laboratories

• JET operation can be followed by remote observers

• Scientists make use of teleconferencing in the widest sense

Remote Participation infrastructure does not replace the physical presence on the JET siteNo remote experiment control


SummarySummary (cont)(cont)

The joint scientific exploitation of the JET Facilities could serve as a blueprint for the future shared exploitation of several other large experiments• JET EP (Extended Performance) Activities

• ITER the first fusion device to produce thermal energy

International Collaboration: Canada, Europe, Japan, Russia

• Experiment-based or scientific collaborations between other fusion research sites in Europe

Universities, other research organisations


References and References and LLinksinks

The Euroatom Treaty of 1957 http://www.euroli.net/sectors/1/A/1957 http://www.fusion-eur.org/fusion

J. Pamela, JET under EFDA: Organisation and resent results 21st Symposium on Fusion Technology, Madrid, Spain, 11-15 September 2000

3rd IAEA Technical Committee Meeting on Control, Data Acquisition, and Remote Participation for Fusion Research Padua TCM Conference, Italy, July 2001

http://tcm2001.igi.pd.cnr.it/


LLinks and Referencesinks and References JET: http://www.jet.efda.org/ EFDA: http://www.efda.org/ UKAEA Culham http://www.fusion.org.uk/ ITER: http://www.iter.org/ Citrix: http://www.citrix.com/ VRVS: http://www.vrvs.org/ VIC: http://www-nrg.ee.lbl.gov/vic/ RAT: http://wwwmice.cs.ucl.ac.uk/multimedia/software/rat/ VNC: http://www.uk.research.att.com/vnc/index.html Pingplotter: http://www.nessoft.com/pingplotter/ Yahoo Messenger: http://messenger.yahoo.com/ Spaniel chat: http://www.searchspaniel.com

April 18-19 2002, Cluj-NapocaRoEduNet ConferenceSlide 1 Remote Participation in physical experiments...

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