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By Robert Reek

On July 9, a small fireoccurred just after midnightin the PFN cabinet ofNLCTA Modulator 1.This fire highlighted boththe effectiveness of ouremergency response systemsand the ongoing need toanalyze and respond toevents such as this.

Even a small fire can bedestructive. In this case, thefire destroyed the cabinet andits contents, melting nearbywater-cooling hoses. Waterfrom the hoses then enteredand overfilled the insulatingoil tank which, in turn,caused the release of about100 gallons of oil into thebuilding.

SLAC Makesthe World'sShortestBunchesBy Heather Rock Woods

Using all two miles of the linearaccelerator (linac), as well as loopsand bends in the beam, and ausually troublesome effect calleda wakefield, SLAC has made theworld's shortest bunches of electrons:12 microns (millionths of a meter)long and 80 femtoseconds (onequadrillionth of a second) fast.

During its first run in May, the Sub-Picosecond Pulse Source (SPPS)made high current, ultra shortbunches of electrons and turnedthem into very bright, ultra shortpulses of x-ray light. These first x-rays made by a linear acceleratorare 1,000 times shorter than thosemade by storage rings like SPEAR,enabling direct observations ofatomic motion in matter that havenever been seen before.

Physicists have always packedbillions of electrons into bunches inorder to acquire enough meaningfuldata. Now, manipulating the shapeand size of the bunches has becomelike a science in itself.

SPPS relies on several tricks tocompress the bunches, which contain21 billion electrons, in order to reacha peak current of 30 kiloAmperes.That's about 1,000 times greater thanthe current found in a householdfuse. "The big increase in energyfrom the beginning to the end ofthe SLAC linac allows us to dothe gymnastics of rotating andcompressing the bunches to reachsuch small final dimensions," said

(See BUNCHES, page 2)

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The inside of the PFN cabinet of NLCTAModulator 1, where thefire took place. The coils are

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Palo Alto Fire Department(PAFD) and SLAC personnelallowed the fire to be extinguishedand the spill to be contained withinthe building. Hence, there were noinjuries or environmental releases.

The staff that responded were veryeffective in making correct and timelydecisions to keep this emergencyfrom being worse than it couldhave been, and the fire was quicklycontained. However, the modulatorwill be unavailable for at least severalweeks and possibly longer.

Analyzing the Incident

Two reviews of this incident wereconducted and lessons learned wereidentified. These lessons includeexploring the usefulness of enhancingthe fire suppression systems in this

equipment and possibly streamlining,coordinating and enhancing SLACemergency response plans.

DOE's Integrated SafetyManagement System (ISMS) 'circleof improvement' provides a roadmap for the SLAC response to anyincident such as this. Using ISMS,we analyzed the hazards highlightedby this event, developed furthercontrols and are in the process ofimplementing them. In the future,we will perform the work with theseadditional safety elements in place.Subsequent feedback on these fixeswill ensure that this improvementprocess is continuous.

Events like this teach all SLACers to"think fire safety and be safe." @

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By Tom Glanzman and Molly Uhl

Earlier this summer, 18 high schooland junior high school teachersbecame students once again in orderto learn about particle physics. TheQuarkNet workshop took place atSLAC and Stanford from June 19 toJuly 3, hosting teachers mostly fromthe Bay Area, but also from as faraway as Washington State.

Four high school physics andchemistry teachers (Gene Csider,Ken Newberry, Earl Roske and MollyUhl) had spent the summer lastyear at SLAC assisting in variouslaboratory groups. These four leadteachers, along with SLAC physicists,planned and implemented the 11-dayworkshop held this summer. SLACpersonnel involved in QuarkNetinclude Helen Quinn (THP), PatBurchat (BABAR), Tom Glanzman(EC), Harvey Lynch (BABAR), AbiSofter (BABAR), and Willy Langeveld(SCS).

Similar programs have taken placeat physics research centers acrossthe country over the past five years,in an effort to expose teachers andstudents to cutting edge research

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(See DOE RATING, page 2)QuarkNet participants. Standing: Ken Newberry (Foothill HS, Pleasanton),Douglas Spalding (Royal Sunset HS, Hayward), Peter Herreshoff(Gunn HS, PaloAlto), Keith Geller (Palo Alto HS, Palo Alto), James Marshall (A. Castillero MS,

San Jose), Helen Quinn (TH), Julie Hubbard (Liberty HS, Brentwood), Dylan Rich(Palo Alto Prep School, Palo Alto), David Lau (Mission San Jose HS, Fremont),

Tom Woosnam (Crystal Springs, Hillsborough), Earl Roske (Leland HS, SanJose), I-Heng (Monta Vista HS, Cupertino), Travis Hambleton (Monta Vista HS,Cupertino), Lisa Breton (California HS, San Ramon), Lynda Nicholson (Charter

School of Morgan Hill), John Currie (Mt. Tahoma HS, Tacoma, WA), RafaleNavarro (Morse HS, San Diego), Harvey Lynch (BABAR), Willy Langeveld (SCS),

Thomas Glanzman (EC), Molly Uhl (Notre Dame HS, San Jose). Seated: AbiSoffer (BABAR), Brian Martin (Thurgood Marshall Academic HS, San Francisco),

Dave Trapp (Sequim HS, Sequim, WA), Gene Csider (San Ramon Valley HS,Danville), Jennifer Docktor (SULI student), Manuel Reyes (SULI student)

and to establish connections betweeneducators and research scientists. TheQuarkNet program is based out of

Fermilab (http://quarknet.fnal.gov/),and funded by the National ScienceFoundation and the DOE.

(See QUARKNET, page 3)

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DOE Gives SLAC"Outstanding"Rating for ES&HPerformanceBy Mike Grissom

Each year, the DOE assessesSLAC's ability to meet establishedEnvironmental Safety and Health(ES&H) standards. Based onboth performance and processmeasures, SLAC received a ratingof Outstanding from DOE for fiscalyear (FY) 2002. Everyone at theLab should be proud of his or hercontributions toward achieving thisrating.

Outstanding is the highest ratingpossible, and could not havehappened without both the hardwork of many individuals across theLab and the results of improvementsthrough SLACs Integrated SafetyManagement System (ISMS).This assessment of SLAC's ES&Hperformance illustrates for DOE andCongress how well we accomplishhigh energy physics and synchrotronradiation research, and it willultimately have an influence onfuture funding.

Measuring Performance

The Lab's ES&H performance isbased on two types of measures:outcome performance and processperformance.

Outcome performance measures,also called 'lagging indicators',are events that have alreadyoccurred, such as the number ofLost Work Days/Total ReportableCases measured for Accidents andIllnesses. SLAC's lagging indicatorsare based on both ES&H Divisionactivities and activities fromwork processes in other Divisionsthroughout the site.

Outcome measures for FY02can be viewed at: http://www.slac.stanford.edu/esh/isms/perfmeas/outpmO2.pdf

Process performance measures,called 'leading indicators', reflectprocesses designed 'up front'to improve the Lab's ES&Hperformance and promote accident/incident prevention, such as thecompletion of ISMS quarterlyreviews, the development of aBehavior-Based Safety Program, or

Lessons Learned: NLCTAModulator Fire

Busy Schedule for QuarkNet 2003 Workshop

Bunches(continued from page 1)

SPPS accelerator physicist PatrickKrejcik (AD).

The gymnastics occur in three stages,starting as the bunches leave thedamping rings near the beginningof the linac. There, a bunch travelsaround the curve of the ring-to-linac(RTL) beamline and gets compressedfrom 6 mm down to 1.2 mm.

the speed of light, they generate anelectric wake (similar to the wake aboat makes), called a wakefield. Infree space, the wake would spreadout perpendicular to the travel pathof the electrons, but in the beampipe, the wake made by the head of:he bunch bounces off the pipe andnterferes with the tail.

Thus the tail has less energy than thehead when a bunch reaches the endof the linac. Fortuitously, the bunchcan be routed through the Final Focus

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To compress electron bunches, SPPS accelerates them below the crest of RF energywaves (shown top). That way, one end of the bunch has more energy than the

other. When the bunch goes through the chicane in Sector 10, the lower-energyhead of the bunch takes the longer path (shown middle) and the tail catches up

(shown bottom), effectively rotating the bunch to be shorter.

DOE Rating(continlud f)roml page 1)

the percent of Employee TrainingAssessments (ETAs) completed.

Process measures for FY02can be viewed at: http://www.slac.stanford.edu/esh/isms/perfmeas/procpm02.pdf

Continuing the Trend

Recent DOE assessments of SLAC'sES&H performance are noteworthy:

FY1998: OutstandingFY1999: OutstandingFY2000: OutstandingFY2001: ExcellentFY2002: Outstanding

The overall SLAC ES&Hperformance, taking into accountthe many kinds of work in processevery day, is well recognized by DOE.SLAC ranks well compared to theother DOE laboratories.

How You Can Contribute

Each employee can influence theupcoming FY03 DOE assessmentby contributing to the achievementof our performance measures.Future TIP articles will providedetails about how individuals andmanagers can fully participate in theISMS process. Details about SLAC'sISMS program, including the SafetyManagement System document,are available on the Web at: http://www.slac.stanford.edu/esh/isms/

Creating the Measures

Following the FY02 negotiationprocess, outcome performancemeasures were approved by SLACand DOE's Stanford Site Office

(DOE/SSO), with support from DOE'sOakland Service Center (DOE/OAK).The measures were developed bysubject matter experts from DOE/SSO, DOE/OAK and SLAC. Guidancewas provided to the experts by thePerformance Measures Core Team,comprised of DOE/SSO, DOE/OAKand SLAC members, and chaired by aDOE/SSO representative.

A summary table providing theresults for each of the outcomeperformance measures in FY02 isshown in the ES&H Quarterly Reportfor the period July-September 2002at: https://www-internal.slac.stanford.edu/esh/divreports/02q4report.pdf

Process performance measureswere approved as described above.Although the Performance MeasuresCore Team provided guidance tothe subject matter experts, the FY99and FY00 measures were largelydeveloped in response to the ISMSPhase I and Phase II final reports'concerns and opportunities forimprovement.

The FY01 and FY02 measures weredesigned to assess the ongoingSLAC ISMS program by conductingquarterly reviews of projectsand/or activities. Future processperformance measures are expectedto fulfill the goal of providingleading indicators with metrics todemonstrate the health of the SLAC-wide ISMS program.

A summary table providing theresults for the process performancemeasures in FY02 is shown in theES&H Quarterly Report for theperiod July-September 2002 at: https://www-intemal.slac.stanford .edu/esh/divreports/02q4report.pdf 0

Electron bunches are usuallyaccelerated through the linac ontop of radio frequency (RF) waves,similar to a surfboard riding the crestof an ocean wave. Bunches can beadjusted to ride on the slope of thewave, where they receive less energyas the slope descends. In the RTL, thebunch looks like a surfer climbing awave: the front of the bunch has moreenergy (i.e., is closer to the top) thanthe back. Going through the curvedpath of the bending magnets, the low-energy tail takes the shortest pathand catches up to the head, makingthe bunch shorter.

The second step in bunchcompression takes place at Sector10, one third of the way down thelinac, where the electrons have beenaccelerated to nine billion electronvolts of energy. Here the bunchesare tipped to ride slightly aheadof the wave crest, so the rear getsaccelerated more than the front.Entering a chicane with four bends,the higher-energy tail is able to takethe shortest path and catch up again,compressing the bunch to 50 microns.Paul Emma (ARDA) calculatedthat this was just the right place tobend the beam. Lynn Bentson (AD)oversaw installation of the chicane,and Cherrill Spencer (NLC) designedthe bend magnets in a way thatwould not introduce any opticalaberrations into the beam.

The final step in compressing thebunch is something that couldonly be done at SLAC, picking upenergy along the remaining 1.3miles of the linac and using an effectpreviously considered a nuisance.As the electron bunches travel at

Test Beam (FFTB), where the beamline jogs right then left. This geometryforces the higher-energy front to takea longer path, and the rear catches upagain. Here, the bunch has rotatedupright again and is now 12 micronslong. At this length, the bunch of 21billion electrons whizzes by a fixedpoint in 80 femtoseconds. Afterthe compression, the bunches arewiggled by an undulator magnet togenerate the x-rays. Eric Bong (AD)installed the undulator, on loan fromArgonne National Laboratory.

"We need a way to measure thebunch length, so part two of theproject is inventing new technologiesto measure on the sub-picosecondtimescale," Krejcik said.

The group resuscitated a specializedaccelerator cavity first used herein the 1960's that kicks the beamvertically (see TIP September 2000,"Rediscovering Deflecting Structuresat SLAC") and inserted it into thebeam line. When turned on by aklystron, this transverse deflectingcavity samples a bunch by sweepingit vertically across a screen where thevertical length gives a projection ofbunch length when it is 50 microns.The SPPS collaboration is developingelectro-optic sampling techniques,borrowed from the world of fast lasertechnology, to measure the bunchesin the FFTB.

SPPS will operate over the nexttwo fiscal years, taking data inanticipation of the Linac CoherentLight Source (LCLS) that will makeeven brighter x-rays. The ultra-shortbunches will also be delivered to theE-164 experiment during its run inthe next fiscal year. 0

Page 2 Interaction Point August 15, 2003

Staff Pitch in at Menlo Park Event

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By Linda DuShane White

Nine SLAC volunteers staffeda soda booth at the 17th annualConnoisseurs' Marketplace: APremier Festival of Food, Art andMusic on Saturday, July 19. It wassponsored by the Menlo ParkChamber of Commerce.

The difference in staff participationthis year was an organized SLACpresence. "This was an opportunityfor people from SLAC to wear SLACt-shirts, present a SLAC bannerand show that the Laboratoryis supportive of the Menlo Parkcommunity," explained SLACCommunity Relations CoordinatorEmily Ball. Over and above her own3-hour stint in the soda booth, Ballspent the day at the fair. She extendsher thanks to the volunteers: BarbaraHoddy (COM), Michael Laznovsky(ESD), Barbara Mason (HR), NicolleRager (COM), Jasmine Rogers (PUR),Mika Stratton (EC), Nina Stolar(COM) and Linda White (DO).

A festive array of tents displayed awide variety of high quality arts andcrafts: jewelry, ceramics, paintings,photography, clothing, leathergoods, lamps, stained glass and evenwaterfalls, as well as a wide selectionof specialty foods. For the first time,thrill rides and games were addedthis year. The Kidzone includeda 24-foot Climbing Wall, Bouncythe Clown creating animals out ofballoons, face painting, a tracklesstrain and much more. Music filledthe air in the Gentry MagazineChef's Pavilion, where top local chefsdemonstrated how to cook theirfavorites.

Ball hopes that everyone will join thefestivities at next year's Connoisseurs'Marketplace. Watch for anopportunity to participate, whetheras a volunteer or a participant. Asvolunteer Hoddy said, "It's fun!"and Rogers concurred, adding, "Itwas fun to see all the families outtogether." And admission is free. @

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QuarkNet(contilned from page 1)

A Full Schedule

The visiting teachers started with atwo-day crash course on the StandardModel on the Stanford campus,presented by Burchat. They also tooktours of current particle physics andastrophysics experiments, includingGravity Probe B and the CryogenicDark Matter Search.

The ultimate goal of QuarkNet isfor teachers to take back some ofthe content and methods of currentphysics research to the studentsthey teach. The cosmic ray detectorsare just one of the ways that theseteachers will bring their experiencesfrom this summer back to theirstudents in the coming school year.

During the course of the workshop,teachers tried out various activitiesto incorporate particle physics intotheir current curriculum. They

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During the next two weeks, teacherswere hosted by SLAC, where theyheard talks about everything fromthe BABAR detector to neutrinooscillations. They were also giventours of many of the experimentalfacilities on site.

The teachers spent five afternoonsgetting their hands dirty-constructingcosmic ray detectors for classroomuse. Here they learned the secretsof sanding and polishing scintillatorplastic, checking and calibratingphotomultiplier tube bases,constructing stands, and assemblingand testing entire counters.

There is still a bit of ongoing workto tune these systems. In addition,SULI summer students JenniferDockter and Manuel Reyes areworking on some Java software tocontrol the equipment and providehistograms of the results. By earlyOctober we expect to have a set ofworking systems that SLAC canloan out to local schools for in-classdemonstrations.

mic ray detectors for classroom use.

calculated the mass of the top quarkbased on data from Fermilab usingconservation of momentum. Theymodeled the increasing distancesbetween stars in an illustration of theexpansion of the universe. They alsodiscussed possible ways to exposetheir students not only to the subjectof particle physics itself, but also tothe realities of how science is done.

Ongoing Participation

QuarkNet did not end on July 3. Post-workshop meetings are scheduledfor early October, and QuarkNetteachers will continue to meet, designnew activities and share strategies forteaching science and incorporatingparticle physics. They will continueto receive help and resources fromSLAC physicists through the contactsthey made this summer.

For more information about theQuarkNet Workshop and thecosmic ray detectors, see: http://www.slac.stanford.edu/quarknet/Workshop2003 0

Training for the AIDS HonoluluMarathonBy Linda DuShlane White

Lorin Sharp (BSD) knows peoplewho have run marathons for manydifferent causes, and she alwaysthought she would like trying one.Then one day last spring, she sawa poster for the AIDS HonoluluMarathon (6 Months Training-YouCan Do It) and felt it was perfect,offering excellent training andbenefiting a cause she believed in.

This was not, however, a snapdecision. "I did the reading,consulted with my husband andthought about the time commitment,"said Sharp. "Everyone around youreally has to be into it. My husband isa great supporter."

On December 14, Sharp will run inthe Honolulu Marathon. She startedher 6-month training and fundraisingprogram at the beginning of June,training on her own for 60 milesa week and meeting with a groupof runners on Sundays. There areseveral such groups in the Bay Area,and many more across the country.

The marathon will raise money andawareness for the San Francisco andNational AIDS Foundations. Sharp isone of 75 people in her group, whichis broken down into pace groups(smaller training and support groups)by ability and experience level. Allability levels are represented, frommarathoners and full-time athletes topeople who have never run a step intheir lives.

Men and women from their teensto senior years, from all walks oflife, form the groups. The majorityof participants have never doneanything like this before, yet ninety-eight percent of them will completethe 26.2 mile marathon.

The training program combinesrunning and walking to increaseendurance and strength with lowrisk of injury. "Every week we go

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another mile," said Sharp. "You arealways succeeding, getting a sense ofaccomplishment. I feel good."

Sharp is still amazed at how well thishuge challenge is working for her.Her pace group is now running 10.25miles, where just a short time agofive miles seemed an impossible goal.They are training to run in the sun toprepare for warm Honolulu weather.And before the actual marathon, allparticipants will have run the full26.2 mile distance.

All money raised is donated directlyto the AIDS cause for research,vaccines, food, housing and medicalservices. Both financial contributionsand volunteering are helpful."Support of any kind is welcome,"says Sharp. "We rely on volunteers tobe sure we're on track and to give uswater (water stations are every mileor so)." Volunteers are being soughtin all parts of the Bay Area.

For more information see: http://www.aidsmarathon.com/participant.jsp?runner=SF-0203&year=2003

SPEAR2MagnetsAvailable toDOE FacilitiesBy Heather Rock Woods

Literally tons of magnets are freefor the taking by groups at SLAC,Stanford and other DOE facilities.

The magnets ran SSRLs storage ringuntil it was dismantled in April tomake way for SPEAR3, which willuse more powerful magnets to createbrighter x-rays with higher photonflux. About 300 tons of magnets,sitting on seven-ton concrete girders,were either rolled out of the SPEARtunnel or lifted out by crane inthe few places where the roof wasremoved.

SPEAR uses magnets to bend the pathof electrons so they can travel in thecircular beam line, and to bend orwiggle the beam at certain points tocreate the synchrotron x-rays usedto investigate myriad materials. Theoriginal SPEAR2 equipment, whichalso includes vacuum chambers andion pumps, is still in good workingcondition. The parts are currentlystored along the Klystron Gallery.

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About 300 tons of magnets and other SPEAR2 equipment are stored along theKlystron Gallery.

"This is material that may be useful atother sites," said Roz Pennacchi (DO).SLAC hopes to find a project that canuse the materials while they are ingood condition, she said.

Currently in suspension storage,these items can't be recycled orreused outside of SLAC or other DOEfacilities because they have been in aradiological area. "While a few itemsare radioactive, most are not andnone are dangerous," said Jim Allanof Operational Health Physics (OHP).

In January 2000, DOE began asuspension on recycling metalsfrom radiological areas (i.e.,accelerator housings, radiation areas,high radiation areas, radioactivematerials areas)-even if they are notradioactive. This suspension will lastfor at least another year until uniformrelease standards are approved.

OHP tests items for radioactivitybefore they are turned in to Salvage.Equipment exposed to beams wherethe energy is greater than 10 MeV(million electron volts) can potentiallybecome radioactive, Allan explained.The measurable levels of radioactivityare very low and pose no danger."The DOE threshold to determine ifmaterial is radioactive is 'anythingdetectable above background(radiation levels) with our mostsensitive instrument,"' said Allan.

There are dozens of dipole bendmagnets, quadrupole magnets andsextupole magnets, as well as beamscrapers and kicker modules. To seethe full list of equipment, or visitthe storage site, please contact AlanConrad, Property Control (Ext. 2329,alanc(' SI AC.Stan ford. FDU). 0

The SLAC Art Committee isproud to present:

Masters of MatterA new exhibition of photography

by world-renownedphotographer Peter Ginter

Opens August 19Panofsky Auditorium

Breezeway

Ginter has a unique style ofphotography, creating theatrical

images by painting light andcolor over the surfaces of hissubjects. Gray accelerators

become red and green,detectors change color and glow

like jewels. The exhibition is aselection from the images Gintercreated during visits to DESY in1997, CERN in 1998 and SLAC

in 2002.

Don't miss this opportunityto see some of the most

startling photos of particlephysics ever created.

Interaction Point August 15, 2003 Page 3

POLICIES AND PROCEDURES World's Particle PhysicsSLAC Policy Fiscal Year-End Laboratories Join To Create Newfor PurchasingOffice SuppliesOffice supplies such as computeraccessories and supplies, deskaccessories and supplies, commonoffice equipment and relatedsupplies are examples of itemscovered by a site-wide contractbetween SLAC and CorporateExpress (CE). The contract providesdiscounts off list prices which varyby product category. In order to fullyutilize this benefit, it is SLAC policythat supplies, as listed in the CEcatalog, will be purchased from CEusing either the paper order form orthe online "EWAY" system.

Please see your departmentadministrator for either the paperform or to place an online order.

Purchase cards are not to be used topurchase office supplies from othervendors unless you receive priorapproval. A request for advancedapproval, with a justification topurchase elsewhere, should besubmitted to Gail Gudahl (ext.2616, gudahletislac.stanford.edu) forreview and approval.

Contact: Gail Gudahl, Ext. 2616,gudahloslac.stanford.edu G

ProcurementDatesPlease consider the following datesand dollar amounts if you areplanning to submit a requisition thatneeds to be delivered and acceptedbefore the end of FY03 (September30, 2003).

Requisitions must be entered intoPeopleSoft on or before these dates:

Friday, August 22Requisitions for $101,000 and over

Friday, September 5Requisitions for $25,000 - $100,000

Thursday, September 18Requisitions for less than $25,000

Any purchase requisitions enteredinto PeopleSoft after these dates willbe processed with a delivery date ofOctober 1 or later.

Contact: Janet Adams, PurchasingOffice, Ext. 8515, jadamsC(slac.stanford.edu 0

Communications ResourceBy Kathy Bellevin

Interactions.org, a new global Web-based resource, has been launchedto provide the particle physicscommunity with news, high qualityimagery, video and other tools tosupport their communications needs.

The Web site (found at http://www.interactions.org) providesa newswire with all the latestdevelopments in particle physics;links to current particle physicsnews from the world's press; high-resolution photos and graphics fromthe particle physics laboratories; linksto education and outreach programs;information about science policyand funding; links to universities; aglossary and a conference calendar.

"Already we have hundreds ofjournalists, researchers and policy-makers using Interactions.org ona daily basis," said Judy Jackson,Director of Public Affairs forFermilab. "This outstandingcollection of materials represents thecombined efforts of communicationsprofessionals from around the world.And this is only the beginning."

Interactions.org will help students,teachers, the media, the publicand scientists in all fields betterunderstand the nature and valueof particle physics research as wellas the current status of initiatives,people and facilities involved inparticle physics and in other relatedfields.

UNTES'4,

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Upcoming EventsFri., Aug. 15,12:30 p.m.SLAC, Green Room,SLAC THEORY SEMINARPaul Hoyer, U of Helsinki"Perturbative QCD in HadronPhysics"

Tues., Aug. 19, 2:30 p.m.SLAC, Green RoomSLAC THEORY SEMINARPervez Hoodbhoy, Quaid-e-Azam U"QCD and the Proton's Spin"

Wed., Aug. 20, 4:15 p.m.SLAC, Orange Room(Refreshments 4:00)SLAC ASTROPHYSICS SEMINARDerek Tournear, Stanford U"Are Black Hole Candidates BlackHoles?"

Fri. Aug. 22,12:30 p.m.SLAC, Green RoomSLAC THEORY SEMINARYael Shadmi, Technion, IsraelInstitute of Technology"Light GUT Triplets and YukawaSplitting"

Aug. 25 - 29Yerba Buena Arts Center, SanFranciscoSLAC SYNCHROTRONRADIATION MEETINGH. Padmore, ALS/J. Stohr, SSRLSynchrotron RadiationInstrumentation Conferencehttp://www.sri2003.1bl.gov/

Wed., Aug. 27,1:30 p.m.SLAC, Green RoomSLAC THEORY SEMINARYitzhak Frishman, WeizmannInstitute of Science"Meson-Baryon Scattering in QCD_2for any Coupling"

Sept. 8 -11SLAC, Panofsky AuditoriumSLAC PHYSICS MEETINGRichard Mount/Arla LeCount, SLACStatistical Problems in ParticlePhysics, Astrophysics and Cosmologyhttp://www-conf.slac.stanford.edu/phystat2003/

Tues., Sept. 16, 8:00 a.m.SLAC, ROB Bldg, Redwood RmSSRL SCIENTIFIC SEMINARCathy Knotts, CoordinatorSSRL Structural Molecular BiologySummer School

Wed., Sept. 24, 8:00 a.m. - 3:00 pmSLAC, Panofsky Aud LobbySLAC/STANFORD BLOOD DRIVELinda Ahlf, SLACCall x2354 for appointmentDrop-ins Welcome!http://www-group.slac.stanford.edu/hr/d/Blooddrive.html

Please send additions to:seminars(a@slac.stanford.edu

For complete event listings, see:http://www.slac.stanford.edu/grp/pao/seminar.html

%

Interactions.org was developed and isjointly maintained by the InterActioncollaboration, whose membersrepresent communications staff fromall of the world's particle physicslaboratories. The new site respondsto the ever-growing demand tolaboratories in Europe, NorthAmerica and Asia for informationand images. The most efficient actionwas to pool experience and resourcesto create a centralized repository.

Service Awards

10 YearsJurgensen, Roger (ESD), 8/16

15 YearsBarillas, George (KLY), 8/29Regan, Mary (KLY), 8/29Sopar, George (ESD), 8/18

20 YearsCollins, Brooks (SCS), 8/29

25 YearsGarcia, Luciano (KLY), 8/16White, Lois (SCS), 8/21

To submit a Milestone, see:http://www.slac.stanford.edu/pubs/tip/milestoneindex.html

See Awards and Honors at:http://www.slac.stanford.edu/slac/award/

"Global collaboration is thefoundation of success in this eraof particle physics research," saidNeil Calder, SLAC Director ofCommunications. "Interactions.orgwill help facilitate that teamwork."

For more information, see: http://www.interactions.org 0

The Interaction PointEditorial Team

Neil CalderNina Adelman Stolar

Katherine BellevinVickee Flynn

Contributing EditorsZiba Mahdavi

Linda DuShane White

WritersHeather Woods

Photography/GraphicsDiana RogersMichael Hyde

DistributionCrystal TilghmanTineke Graafland

The Interaction Point is published bi-monthly every first and third Friday.Submissions are due the second and

fourth Tuesdays of each month.

Send submissions totip@slac.stanford.edu, or mail to

TIP Editor, MS 58, Stanford LinearAccelerator Center, 2575 Sand Hill Road,

Menlo Park, CA 94025.

TIP is available online at:http://www2.slac.stanford.edu/tip/

Page 4 Interaction Point August 15, 2003

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