herman winick mentorship
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Herman Winick Mentorship. J. Schmerge. Brief History I. 1995 first meeting with Herman and interviewed for a postdoc position a few months later Thrilled to get a job offer Started working on the Gun Test Facility (GTF) to improve injector brightness in January 1996 - PowerPoint PPT PresentationTRANSCRIPT
Herman Winick Mentorship October 2, 2012
Herman Winick Mentorship
J. Schmerge
1
Brief History I• 1995 first meeting with Herman and interviewed
for a postdoc position a few months later• Thrilled to get a job offer• Started working on the Gun Test Facility (GTF) to
improve injector brightness in January 1996• Worked closely with Herman building,
commissioning and improving the GTF for 3 years• In the process Herman transferred a lot of
knowledge about projects and management to me and other students
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Brief History II• Early 1990’s Winick was coordinating a group from LBL, LLNL, SLAC and UCLA
studying linac driven X-ray FELs• Study group realized R&D on sources was required to produce the necessary
brightness for an X-ray FEL and Winick started collaboration to build new RF gun– BNL (I Ben-Zvi, X. Wang)– SLAC (H. Winick, D. Palmer, R. Miller)– UCLA (J. Rosenzweig, C. Pellegrini)
• Winick proposed the Gun Test Stand, later called GTF, at SSRL to characterize electron injectors and reduce the emittance to the sub micron level necessary for linac driven X-ray FELs– SLAC (H. Winick, J. Schmerge, M. Hernandez, H. Wiedemann, J. Weaver and SSRL staff)– University of Rochester (D. Meyerhofer, D. Reis)
• By 2006 GTF developed new injector which provides sub-micron emitance for LCLS based on prototype gun measurements
• Developed the theory for metal cathodes to predict thermal emittance and quantum efficiency
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RF Gun
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Scale2" 3"0 1"
Scale2" 3"0 1"
GTF Layout
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MOD1 KLY-1
GTFLASERROOM
3M LINACRF
GUN
DIAGNOSTICROOM
MOD2 KLY-2
MOD3 KLY-3
GTFControlRoom
8 m LaserTransportSystem
SSRL Injector Vault
DIAGNOSTICS
GTF
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First Beam (1997)
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Longitudinal Phase Space
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-150
-100
-50
0
50
100
150
-2.0 -1.0 0.0 1.0 2.0Dt (ps)
DE
(keV
)
downstreamlinac
spectrometer
upstreamlinac
Twiss ParametersDownstream Linac
RMS Unitst
11 0.575 ps2
t12 -100 keV pst
22 17629 keV2
el 6.8 keV pss
E 133 keVs
E uncorr 9.02 keVs
t 0.76 psslope -175 keV/ps
Transverse Phase Space
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-300
-200
-100
0
100
200
300
-400 -200 0 200 400Dx (mm)
Dx'
(mra
d)
head
tail
projected0.00.10.20.30.40.50.60.70.80.9
-2.0 -1.0 0.0 1.0 2.0
Time (ps)Projected values displayed at t=0
e n (mm)
Gaussian
RMS
Slice Emittance
e n (m
m)
Mentor• Mentoring is a process for the informal transmission
of knowledge, social capital, and the psychosocial support perceived by the recipient as relevant to work, career, or professional development;mentoring entails informal communication, usually face-to-face and during a sustained period of time, between a person who is perceived to have greater relevant knowledge, wisdom, or experience (the mentor) and a person who is perceived to have less (the protégé) (Bozeman, Feeney, 2007).
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Lessons From Herman
• How to survive on a shoestring budget• How to build a collaboration• How and when to stay below the radar• How to work at a national laboratory• Work and safety planning• How to beg, borrow and steal from better
funded groups
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Life Lessons
• Lead by example• Compassion for colleagues• Conflict resolution• Communication, communication,
communication• Benefits of frequent flyer membership• Parenting
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Non-Technical Lessons
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Winick Impact• LCLS success in part due to the injector R&D
program he had the vision to begin– Reduced correlated energy spread– Eliminated the quadrupole field in the gun– Added solenoid correctors that are essential to the LCLS
operation• Mentoring
– My career was possible because of what I learned working with Herman
– I hope to pass the torch and be as successful mentoring others as Herman has been
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