^Interaction PointEvents and Happeningsin the SLAC CommunityApril 1997 Vol. 8 No. 4

Panofsky Awarded Matteucci Medal

SLAC's DIRECTOR EMERI-TUS, Professor Wolfgang K.H. Panofsky was awardedItaly's Matteucci Medal foroutstanding merit in Phys-ics. The award ceremonytook place in Italy on March22, 1997, during the schoolyear's opening ceremony ofItaly's National Academy of· _ _ __ _ _ /1 - L 'VT \

Science (known as the AL).The Accademia Nazionale Della Scienze Detta

Dei XL, usually known as the Accademia Quaranta,was founded in 1785 in Verona, Italy in a national-istic Italian spirit to utilize science in bringingtogether the disconnected and often hostile Italianprovinces. It consisted of 40 members from allparts of the country. When Napoleon invadedItaly, he showed a great interest in the fate of theAcademy, in fact donated 10,000 francs to the cof-fers and decreed that its headquarters should beset up in Modena. That was changed in 1870,moving the headquarters to wherever the currentPresident resides.

Carlo Matteucci was born in Ferli, Italy, in

1811. He studied in Bologna and Paris and was

trained as a chemist and physiologist but also hada strong interest in physics. Mattuecci's work con-centrated on electrical effects on chemical systemsand on biological systems including animals (hedid a special study of the electric eel). He had anillustrious career, and during his later years be-came heavily involved in administrative and po-litical responsibilities. In 1866, he became the presi-dent of the Quaranta Academy.

The Matteucci medal was endowed one yearbefore his death in 1867, and the administration ofthe medal was continued by his wife, RobiniaYoung-Matteucci. In a proclamation of VictorioEmmanuele II on July 10, 1870, the Italian Societyfor the Sciences decreed that a "fine Matteuccimedal of gold" would be conferred each year tomembers of the Italian and foreign physics com-munity for their outstanding contribution towarda major progress in science. The first medal was

awarded in 1860 to Hermann Helmholtz of Berlin.The list of recipients is very impressive, in-

cluding Thomas Edison, (1857) Guglielmo Marconi(1903), Marie and Pierre Curie (1904), Ernest Ruth-erford (1923), and Albert Einstein (1921). We arepleased to add our congratulations and best wishesto another great scientist, Pief Panofsky (1997).

-Vickee Flynn

Then And Now

Blueprints of the Lab, dated April 1957 Aerial view of SLAC as it looks today.

..6 - - Ibw - - - - - - -- .

HAS YOUR CHILD EVER ASKED YOU, "Whatshould I be when I grow up? What do you do atwork?" Answer: The SLAC staff have anopportunity to bring your children to work andshow them on Thursday, April 24! A day of wonderand discovery for 37 girls and 37 boys is planned,with an event designed to enhance individual self-worth, give purpose to higher education, and inspirecareers in science and technology. The programwill be open to 9 - 15 year olds on a first come, firstserve basis (registration ends April 4, and pre-registration is mandatory).

Take Our Children to Work Day is avariation of the national event, Take Our DaughtersTo Work. The event, created in 1992 by the Ms.Foundation, is a means for adults to lead by exampleand correct a troubling trend among adolescentgirls. The Women's Interchange at SLAC (WIS)decided to include boys in this positive influenceprogram this year.

The morning will be filled with interactiveactivities, such as leadership/teamwork games thatdemonstrate good communication techniques, andemphasize good work ethics and principles in adiverse workplace. In an effort to get the childreninteracting with science, there will be "hands on"workshops, allowing them to migrate through thedifferent activities - which will include using a

borascope, building an electric motor,experimenting with carbon dioxide, learning aboutradioactivity, exploring optics and lasers,participating in demonstrations with a vacuum,and surfing the World Wide Web. A half-hourpanel of speakers will highlight diverse jobs, andprofile employees' backgrounds and life decisionswhich led them to successful careers at the Lab.Site tours will give a behind-the-scenes view ofplaces like the Linac, the Klystron Gallery, and theCollider Experimental Hall. The morning wrapsup with a prize raffle, a group photo with parents,and an optional bar-b-que lunch in the cafeteriapicnic area.

Parents and children are together and ontheir own in the afternoon, conducting normalSLAC business for the rest of the day. Severaldepartments will host an "Open House" activity ordemonstration in the afternoon, which may be ofinterest and worth planning your workday aroundprior to the event. These open houses includeactivities such as the plating of metals, computer-aided design and drawing, techniques in navigatingthe World Wide Web, machine shop partfabrication, and business services.

For an up-to-date schedule, visit the TOCTWsite at http/:www.slac.stanford.edu/grp/bsd/toctw-97.html. -Jan Crehore

Meet the Speaker Panel: "Profiles in Excellence"

SIX SPECIAL EMPLOYEES WILL speak at Take Your Children To Work Day. They represent differentcareers in science and technology, as well as personal qualities for achieving success in tomorrow'sdiverse workplace. For complete biographies, visit the WWW home page (address above).

Neal I dinator,SLAC Computing Services

_laulia lsansuo, A-umlin lsitra iveAssociate III, Personnel Records

(Mistress of Cerer

John McMahon, Acc SystemOp I, Accelerator Operations

Group

Stephanie Carlson, Admin Michelle Cnarpentier, buyerServices Manager II, SSRL III, Purchasing Dept.

Haitham Hindi, ResearchAssistant, EE Dept.

Kathleen Thompson,Physicist, ARD-A

2

-- --r - --- --- 0 - r - VI

1 -. . v 4-- n L;41 r-

,- . ... I 11 / '-- - d ' T-)

SLAC Graduate Students become CERN FellowsAT A TIME WHEN high energy physics isstruggling to encourage young people, severalbright SLAC graduate students continue to makestrong contributions to the field. In the past yearfirst Michael Hildreth, then Tom Junk, Homer Nealand Peter Tenenbaum (see story on Page 10)traversed the country and the Atlantic to collaboratewith our CERN colleagues.

"CERN Fellowships are a very prestigiousway for young scientists to launch their career"according to Professor Rafe Schindler, facultyadvisor to two of the graduates. Considered a realperk to member states, Schindler suggests thesepaid associate positions are "very limited to non-member states [such as the US]." Graduates areusually given two years to collaborate on an activeexperiment and work with a broad range ofscientists from throughout the world. Followingthe Fellowship, a postdoc position is desirable tocontinue research or a faculty position can providethe opportunity to teach and to do research as well.

Professor David Burke was faculty advisorfor both Peter Tenenbaum and Michael Hildreth.Michael Hildreth (Stanford University) wasinvolved in B-Physics and QCD with the SLDCollaboration. He was also the physicist on shift atMCC for background timing during the SLD runs.Mike finished his thesis in early 1995 and departedfor CERN where he became involved in the OPALExperiment. Michael served as a tour guide formany years. His easy-going manner and apthandling of technical subjects enabled him to enjoyvisiting groups ranging from college students toprofessionals in many fields.

According to Tenenbaum, since he was firstto arrive at CERN, "Mike served as the hospitalitycommittee." As the others joined him, they wereescorted through the myriad details and culturalbarriers in this strange new land.

Early in 1996, Tom Junk (Stanford University)and Homer Neal (Stanford University) began theirCERN Fellowships. Both men were involved withthe SLD detector as it was built, helping tocommission the new detector to work well with thestill new Stanford Linear Collider (SLC). Followingthe commissioning with the Mark II detector(previously in use at SPEAR, at PEP and then SLC),the SLD was moved into place in 1991.

According to Schindler, both Tom and Homerwere active participants in the SLD B-PhysicsGroup. Homer Neal defended his thesis in thesummer and Tom Junk defended early in the fall.Ignoring the frantic pressure to complete theirwork, both elected to keep on gathering more dataas SLC/SLD running continued to improve the

information for their thesis efforts and addingpolarized data as it became available.

Tom Junk was a key player in polarimetry forSLC/SLD. Tom's areas of interest led him to theOPAL collaboration. Tom served as a SLAC TourGuide during his time on SLD. He was especiallyadept with the detailed technical visits such asgroups of engineers, who often ask very difficultquestions.

Homer Neal worked on the tracking system.Homer had an offer to go to Orsay; however, theCERN Fellowship was an opportunity difficult topass up. Although a few months are given to explorethe experimental opportunities, Homer was leaningtowards ALEPH before joining the OPAL group.

Eric Weiss (U of Washington, Seattle), leftbehind to work with the tracking system controls,is still "missing Homer Neal's prolific codingabilities."

We wish them each the best of success in theircurrent and future endeavors.

-Nina Stolar

Noted Author toSpeak at SLAC

"THE SCIENCE TRAINED PROFESSIONAL: ANew Breed for the New Century" will be presentedby Sheila Tobias on Friday, April 11, from 12 noonto 1 pm in the SLAC Auditorium.

In "Rethinking Science as a Career" (ResearchCorporation 1995) Sheila Tobias and her coauthorsfind a set of "disconnects" between the supply ofand demand for future scientists. In this talk, shewill review her research and offer a programmaticstrategy to increase demand for scientists byreconfiguring the supply.

Her call is for a new "breed" of "science-trained" but not research-driven professionals whowill provide the resources, political savvy, andenthusiastic support for science now lacking amongAmerica's top managers and politicians.

Fewer than 30% of America's top managershave studied science even at the undergraduatelevel. Recruiting future lawyers, editors, managers,politicians, and public sector professionals to theundergraduate science major is sound educationand sound practice to maintaining an infrastructurefor science.

Tobias is the author of "Math Anxiety" and arecently released book "The Faces of Feminism."She is an independent scholar and a consultant onequity issues.

-P.A. Moore

3

Gary Warren Retires After 32+ YearsWE'RE NOT EXACTLYCERTAIN just how thefledgling Health PhysicsGroup (HPG) heard aboutGary Warren in 1964; peoplejust seemed to appear atSLAC when the need wasgreatest. With an MS inHealth Physics, he was the

fifth member of the HPG, the first with a degreespecifically in the Health Physics field. He turnedout to be more than we could have hoped for,bringing to SLAC a strong interest in, and anunderstanding of ionizing radiation, as well as aconsistently cheerful personality.

His talents were immediately channeled todesigning ionizing-radiation monitors because thepulsed nature of SLAC's radiation and the strongmagnetic fields made most commercial instrumentsunworkable. The results of Gary's work can stillbe seen today in the yellow BSOIC's located out-side various shielding areas, and in the remainingorange survey meters. His sanguine nature showeditself when he took on tasks without complaintand carried them out not only professionally butimaginatively.

When some members of the HPG had to de-vote more time to the shielding studies of thenewly proposed PEP ring in 1976, the group wassplit into two separate units: the Operational HPGroup (OHP), a sub-unit of Plant Engineering inthe Technical Division, and the Radiation Physics(RP) Group, a sub-unit of the Research Division.Gary was asked to take over the leadership of thenew OHP.

As OHP Group Leader, Gary was a uniquecombination of manager, mediator, placater,trouble shooter, and mentor to the group, to therest of SLAC, and sometimes to the DOE whichoversaw SLAC's operations. He understood per-fectly Wolfgang (Pief) Panofsky's "good neigh-bor" philosophy and skillfully carried it out, build-

The following people joined SLAC through mid-March:John Back, Experimental Group C; Carl Blankenship, PCD;Masako Iwasaki Abe, Experimental Group A; Alexandr Korol,Experimental Group E; Janet Ormes, Library; Jonathan Ormes,Experimental Group K; Peter Tenenbaum, ARD-A; VilmaVentura-Ramelb, Purchasing; Diana Viera, SSRL.

ing good relations with the DOE and integratingmany new regulations into SLAC's operations.Even so, Gary would at times dig in his heels tohelp educate the DOE if regulations weren't appro-priate for SLAC's unique radiological environment.

Under his tutelage, the OHP Group took onWaste Management and Health and Safety. Ulti-mately these functions became part of the Environ-ment, Safety, and Health (ES&H) Division, withMatt Allen as its Associate Director, and Gary,relieved of his OHP duties, as Assistant Director.

At the same time, the RP Group moved fromthe Research into the ES&H Division, bringing thetwo former partners once again under the samemanagement. In 1995, Gary, in addition to his roleas Assistant Director of ES&H, once again resumedthe duties as Department Head of a much largerOHP, a position he occupied until his retirementon January 2, 1997.

During Gary's years as a conservator, SLACgrew from a two-machine accelerator laboratory-the Two-Mile Linac and SPEAR with SSRL-totoday's multi-faceted laboratory. All the while,Gary led an ever-growing OHP Group, not so muchby fiat, but often simply by not getting in the wayof solutions. It is in great part due to his ability toguide and mediate that the safety aspects of thatgrowth are now strong and seamless parts of SLAC'soperations.

We thank him for all those years, and we willmiss him greatly. However, Gary and his wifeChris have gone on to yet another love-a smallranch near San Juan Bautista and their horses-which will fully occupy them in the coming years;that and some cross-country skiing, and even anoccasional trip to the rivers of the Sierra for somegold panning. We'd wish him luck but suspect thatall he really needs is to put his wonderful abilitiesto work, and things will turn out well for him.

-Ted Jenkins, Ralph Nelson, Ken Kase, and Mike Grissom

The Interaction Point© 1997, is published by Stanford Linear Accelerator Center. Editor-in-chief, P.A. Moore; Production Editor, Vickee Flynn.Deadline for articles is the first of every month. Items are published on a space-available basis and are subject to edit. Submissions may be sentelectronically to tip@slac.stanford.edu or by SLAC ID mail to TIP, MS 20. Phone 926-4208.

4

Work Safe, Work Smart

From 1/17/97 through 3/14/97, there were 56 calendar dayswithout a lost time incidentbeing filed, according toSharon Haynes, the Worker'sCompensation Coordinator.

L

M"I I

100 Years of ElectronsTHE ELECTRON, WHICHis so centrally involved inalmost everything we dohere at SLAC, turns 100 thismonth. Or at least our rec-ognition of its existence asan elementary particle does.On April 30, 1897, JosephJohn Thomson reported theresults of recent experi-ments on cathode rays to aFriday meeting of the RoyalInstitution, suggesting theserays were composed of nega-tively charged pieces of at-oms he dubbed "cor-puscles." To commemoratethis breakthrough-and thediscovery of subatomic par-s; o An -o L- C at; ;_ - * : 1 a

J.J. inompson in his laboratory at Camoriage university. ticles-Ite JDpring issue outhe SLAC Beam Line is de-voted to the topic "100 Yearsof Elementary Particles."Photographs from that issueare included here.

-Michael Riordan

J.J. Thompson and Ernest Rutherford (r) at theCavendish Lab in 1934.

Illusl iminouspaths of cathode rays (lower trace) bending in a magneticfield. The upper trace is due to ionized atoms in the gas.

Richard Feynman lecturing on his partonmodel at SLAC in October 1968.

CZUC0

ELWa)

a)>

.0<0

< c

a) >I- C

5

VM Migration Moves to Next Phase

disseminate information about all the changeshappening in computing.

March 1 was the end of General Service onVM. Some folks continued using VM after thatdate for one of the legacy services that have not yetbeen moved off of VM, for example, one of theBusiness Systems that will be replaced byPeopleSoft later this year ( SIDES or ELDREQ).

Photos(courtesy ofC h u c kBoeheim)taken at therecent VMPhaseoutFair.

Jonathan Wong (PEP-II), TonyJohnson (SLD)

(1 to r) larnce Kinara ana Les Cottrell (seated), (SCS)Dorothy Antwine (BIS) and Jennifer Masek (Tech Pubs)

Approximately 1400 accounts were disabledfrom logging into VM on March 3. A small handfulwere later reinstated, but the vast majority madethe transition. A few hundred user accounts arestill active on the VM system, and that number willdecline as the replacement systems are brought up.What's happened to the data you left on VM?Nothing yet--it's still there in case of need. In factyou can still reach it to copy it via NFS. The VMminidisks can be found on /nfs/slacvm/user.vaddr/ on all central SLAC UNIX systems,where 'user' is your VM userid, and 'vaddr' is thevirtual address of your minidisk (191 is yourprimary minidisk, and others often had addressessuch as 192 or 197).

After a period, we will copy your data to anNFS fileserver to preserve a snapshot of it. Thefileserver is called the Morgue, and your files willbe found in /nfs/morgue/gg/user/vaddr/, where'gg' is your two-letter group code, and 'user' and'vaddr' are as above. The files here won't betranslated from EBCDIC to ASCII, because we wantto be sure that non-textual data is not altered.

There is a command named 'vmfile' on UNIXthat can translate a file in the Morgue to a readableformat. Type 'man vmfile' on UNIX for moreinformation.

Your notebooks and names files can still beretrieved from VM as well. There are conversionutilities for both of these, which you can find on theVM Migration Web Page: http://www.slac.stanford.edu/comp/vm/vmmigr.html. These areweb-based conversion utilities that can convertyour notebooks and names files for most of themail and address book programs in use on site.

Visit the VM Migration Web Page for the FAQ(Frequently Asked Questions) list, and forinformation on the migration plans for theremaining VM applications. This page can also beused to give us feedback on your needs andconcerns. Computing changes are stressful and wehope to make the transition as easy as possible (andmaybe even fun at times).

-Chuck Boeheim

r

6

AREA CODE CHANGEFROM 415 TO 650

EFFECTIVE AUGUST, 1997

I

I · ·I

SSRL HostsInternational

WorkshopIN JANUARY SSRL HOSTED the SLAC/DESY International Workshop on Inter-actions of Intense Sub-Picosecond X-rayPulses with Matter. Researchers fromfive countries and 12 different institu-tions attended the two-day event orga-nized by SSRL staff members RomanTatchyn and John Arthur; DESY staffmembers Gerd Materlik and JuppFeldhaus; and ESRF staff member AndreasFreund.

The workshop was associated with alarger ongoing study of the Linac Coher-ent Light Source, or LCLS. The LCLS, anX-ray Free Electron Laser (FEL) based onthe SLAC linac, a photocathode injector,and a 100 meter-long undulator will ac-celerate electrons to a range of energiesbetween 5-15 GeV, creating a 1.5 to 15angstrom photon beam of unprecedentedbrightness, coherence and peak power.

The goal of this international ex-change of ideas was to systematically ad-dress issues associated with the extremelyhigh x-ray power levels that are expectedto be produced. These power levels arecomparable to those produced by exist-ing intense lasers in the visible and infra-red regions, but are unprecedented in thex-ray range. In addition to unique oppor-tunities for materials and atomic science,the high peak power presents technicalchallenges for x-ray optics.

The workshop presentations ad-dressed optics and instrumentation issuesas well as the status of high intensityradiation theory and experimentation.The workshop lectures and discussionsled to a number of suggestions for scien-tific research on plasma and condensedmatter. Near-term possibilities for dem-onstration experiments on existing or al-ternative sources were discussed, and itwas concluded that some useful prelimi-nary studies could be performed on theSLAC linac using an undulator substan-tially shorter than the one required forthe full-scale LCLS. Plans for longer termscientific programs on the LCLS are un-der discussion with various laboratories,in particular LLNL.

-Suzanne Barrett

el l -i I 3'

Sixth InternationalWorld Wide Web

ConferenceTHE SIXTH INTERNATIONAL WORLD Wide Web Confer-ence (WWW6) co-hosted by SLAC and Stanford is, literallyand figuratively, "right around the corner." This excitingevent happens at the Santa Clara Convention Center onApril 7-11. The WWW6 Conference website (http://www6conf. slac. stanford. edu/) contains the most up-to-date information about the conference program.

WWW6 plenary speakers include shuttle astronaut andStanford grad Mae Jemison, White House staffer Tom Kalil,virtual community pioneer Howard Rheingold, cyberspacevisionary Paul Saffo, WWW inventor Tim Berners-Lee andmore. Tutorial day (April 7) contains presentations by suchWWW experts as Jakob Neilsen (WWW page design), Lin-coln Stein (WWW security), Mark Pesce (VRML) and others.The History track (April 11) will present addresses by no-tables like Douglas Engelbart.

The Interactive Conference Environment (ICE), a Web-based application designed especially for WWW6, providesaccess to information on the technical program and all con-ference events. Guests are welcome to limited access forvirtual participation.

Throughout the week of the conference, WWW6 willcollaborate with the HyperText'97 Conference inSouthhampton, UK and the Computing in High Energy Phys-ics Conference (CHEP97) in Berlin. -Bebo White

Ray Larsen Returns to theTechnical Division

GREG LOEW RECENTLY ANNOUNCED that Ray Larsenwould assume the position of Assistant Director within theTechnical Division. Larsen will coordinate the activities ofthe Controls and Power Conversion Departments, takingover these responsibilities from Greg Loew and EwanPaterson, respectively.

Larsen first came to SLAC in October 1962, as anElectronics Engineer. During the subsequent 26 years, heheld a number of important positions in the TechnicalDivision, including heading up Electronics in 1981 (at thattime was one of the largest departments at SLAC). He left theLaboratory in 1988 to establish his own electronics business.

In April 1995, Larsen returned to SLAC where heassumed the dual role of Controls System Engineer, andSafety and Protection Systems Engineer in PEP-II. Togetherwith Tom Himel, he was able to accelerate the design andconstruction schedule for controls for both rings and theinjection systems. Since much of the commissioning workwill require coordination of many people in the TechnicalDivision, we are very fortunate that Ray has agreed to "comeback home" and give us a hand at this important next stagewhere the PEP-II and Technical Divisions will have tooptimize their joint work.

7

SSRL All HandsMeeting

THE ENTIRE SSRL STAFF poured;: I.: ilQ into the Auditorium, coffee cups in

hand on Friday morning March 14 tohear Arthur Bienenstock, Associate Director of SSRL, deliver a"State of SSRL" address in which he looked at the laboratory'saccomplishments of the last year, reviewed the progress of themajor projects, and looked ahead to the coming year.

Bienenstock commented on the President's budget, callingattention to a positive step for science in that a proposed 8%reduction in funding to the DOE Office of Energy Research wasno longer in the out year plans of the Administration. Hence,DOE's Office of Basic Energy Sciences and Office of Health andEnergy Research now expect at least level funding over the nextfew years.

The picture painted for SSRL's future development wasbright. With respect to beamlines, Beamline 9, designed forstructural molecular biology, is close to completion and it isanticipated that Beamline 11, the molecular environmental sci-ence beamline, will be completed in early 1999. Funding is alsobeing sought for a protein crystallography side station onBeamline 11.

A major upgrade is being planned for the SPEAR ring,transforming it into a low emittance third generation light sourcewith 3 GeV, 200 mA operation. The upgrade will have a strongpositive impact on research in areas such as protein crystallog-raphy, microdiffraction, and microcontamination analysis. De-sign studies and cost estimates are presently underway.

Significant advances have been made by the Linac Coher-ent Light Source (LCLS) design team, a collaboration involvingseveral divisions of SLAC and a number of other scientificinstitutions. The LCLS would create a photon beam of unprec-edented peak brightness, far surpassing anything available insynchrotron light sources today. The remarkable characteristicsof LCLS radiation have the potential for opening up a number ofimportant new scientific frontiers. The team is in the process ofplanning research and development projects, and completingthe design, cost estimate and construction schedule.

Bienenstock closed on a optimistic note, complimentingthe staff on the quality of the services provided to SSRL's usersand the reliability and stability of SPEAR operation during thelongest run in the SSRL's history, anticipating equally long runsin coming years in order to meet increasing user demand.

The staff enjoyed a lively exchange of ideas in an informaldiscussion session in the breezeway following the talk.

-Berah McSwain

FacultyMilestones

BURTONRICHTER HASannounced theappointment ofthe new SLACHigh EnergyP h y s i c sFacultyChairman. Professor Charles Prescottwill begin his 4 year appointment onSeptember 1, 1997, replacing ProfessorMartin L. Perl, who has served as chairsince 1991.

Another Cold Spot?SLAC's new helium liquefier/refrigerator plant is shown beingunloaded at IR2 on March 20, arrivingafter a 7,000 mile journey by ship andby truck. The fully automatic plant hasa capacity of 400 liters/hour(liquefaction) or - 1,100 watts at 4.4K(refrigeration). After commissioning inmid-August, it will begin its prime roleof supplying liquid helium for the BaBarDetector's superconducting magnet coil.

Grad Students Needed to Host Lab ToursGRADUATE STUDENTS ON ASSIGNMENT here at SLAC are invited to apply for the position of Tour

Guide. The SLAC tour program hosts over 10,000 people (i.e., students, Stanford alumni, general public

including senior citizens, SLAC employees) each year, and helps to foster public awareness of SLAC's

contributions to science and education. Grad students interested in applying can contact Pauline

Wethington, Tour Coordinator at ext. 2204 (email address: lean@slac.stanford.edu).

8

SLAC Trees Tell StoriesAS YOU WALK AROUND the grounds at SLAC, youmight notice that some of the trees contain plaques attheir bases. This is because of a unique tradition thatbegan at SLAC over 30 years ago. Some employeesplanted trees as a farewell gesture upon their retirement.A redwood grove was planted in Pief Panofsky's honorupon his retirement as Director of the Lab. Yet othertrees were planted as living memorials to colleagues whohad passed away during their employment at SLAC. Asnew people come to the Lab, the stories of the treesshould be retold so we can appreciate the livingmemorials. Take a moment to read the plaques; and thenlook for future articles on this interesting bit of SLAC'songoing tale.

On Wednesday,March 19, agathering ofcolleagues andfriends of DebbieDixon (at SLACfrom 1969 - 1996)met around thesmall blossomingtree planted in hermemory outsidethe Orange Roomin Central Lab.

Her husband, Charles, came to bless the tree and the newplaque at its base. -Nina Stolar

-Nina Stolar

c

C

Meet Nick Nichols, S&E Technician in the EFDTarget Group. One of his most recent projects

was working on E155 in End Station A.

Want to find outWhat's New in

Computing?

AS SLAC STAFF LEAVE the VMmainframe, it is more difficult to informpeople of changes in the SLAC computingenvironment. VM News provided a singleplace where anyone could find out what'snew.

Now SCS has a mechanism forbroadcasting computing news in twodifferent ways, so you can choose the onethat suits you best. There is a new mailinglist, named comp-change, to which you cansubscribe for computing news to bedelivered to your mailbox. A linkednewsgroup named slac.computing.changes.will carry the same articles. To subscribe tothe comp-change mailing list, just sendemail to listserv@slac.stanford.edu, and inthe body of your email, put the lines

subscribe comp-changeend

(The word 'end' prevents anyautomatic signature from being interpretedas a listserv command.) You'll receive emailin return that you've been subscribed to themailing list.

To view the newsgroup, just start upyour favorite news browser (Netscape canbe used for this), and select the newsgroupslac.computing.changes.

We'll post announcements of newcommands or programs, changes to serviceschedules, or new versions of software (e.g.a new version of the operating system or ofa compiler). Messages will be short and thetotal volume low. Since this is a generalmailing list and newsgroup for allcomputing, not everything may apply toyou directly.

There is a companion mailing list (andnewsgroup) that has been in operation forannouncements on service outages. Themailing list is named comp-out and thenewsgroup is slac.computing.outages. Youcan subscribe to or view them in the sameway as the new changes list.

-Chuck Boeheim

9

CERN Fellow Returns toAccelerator R&D Group

PETER TENENBAUM (akaPT) has returned to SLAC,joining the Next LinearCollider Test Accelerator(NLCTA) group under thegeneral guidance of ChrisAdolphson. PT recentlyreturned from CERN, wherehe had spent the last yearworking on the CompactLinear Collider (CLIC)facility. Helping to com-mission the high-chargebeam line, he participated inthe first test of this scheme:to run two linear colliders„-; A n -1-% -vT-c I C!in "C -tOilUte- y-s-lUt:, UbilL~ LLCt:

energy of one linac (the "drive beam") to accelerate the particlebeam in the second linac.

PT first came to SLAC as an Accelerator Physics student inExperiment Group I. A quick study under Professor DavidBurke's tutelage, PT made significant contribu-tions to theFinal Focus Test Beam (FFTB), an R&D facility for the NextLinear Collider. PT trained as a tour guide and took manyvisiting groups through the Lab. The faith Dr. Burke placed inhim was evident as he volunteered Tenenbaum as technicalexpert to host many VIP tours of the facility.

"I got responsibilities most graduate students don't," statesPT calmly. He collaborated with Fermilab scientists on thelocal beam-based diagnostics for the FFTB facility. "I analyzedall the data we took from 1993 through mid-1995. I reviewedevery graph in the log book to do my thesis work," said PT. Thisis, of course, a favorite pastime of graduate students who thendebate their interpretations of the data. His lasting contributionwas installation of the touch panels for FFTB beam tuning at theMain Control Center.

The NLCTA test facility is still bring commissioned by theARD-A group in the Tech Division. After about one year ofrunning, there are still components and systems being installed."I'm sure we will uncover many areas of development that needattention as we continue this process," said PT, excited tocontinue his contributions to the accelerator research anddevelopment effort toward the next generation linear collider.

-Nina Stolar

10

Traffic CitationsWAS IT YOU!?! During a five-day period in March, SLACSecurity issued 56 traffic citations (and numerous warnings.Forty-three of the tickets were for exceeding the speedlimit, and 13 were for running stop signs. Please observeSLAC's stop signs and speed limit to make this a saferwork environment.

I I - - ---�