Herman Winick Mentorship J Schmerge Herman Winick Mentorship

Herman Winick Mentorship J. Schmerge Herman Winick Mentorship October 2, 2012 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 Herman Winick Mentorship October 2, 2012 2

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 theory for metal cathodes to predict thermal emittance and quantum efficiency Herman Winick Mentorship October 2, 2012 3

RF Gun Herman Winick Mentorship October 2, 2012 4

GTF Layout DIAGNOSTICS 3 M LINAC RF GUN DIAGNOSTIC ROOM MOD 3 KLY-3 MOD 2 KLY-2 1 SSRL Injector Vault KLY-1 8 m Laser Transport System GTF LASER ROOM Herman Winick Mentorship October 2, 2012 GTF Control Room 5

GTF Herman Winick Mentorship October 2, 2012 6

First Beam (1997) Herman Winick Mentorship October 2, 2012 7

Longitudinal Phase Space Twiss Parameters Downstream Linac Herman Winick Mentorship October 2, 2012 8

Transverse Phase Space en (mm) Slice Emittance Herman Winick Mentorship October 2, 2012 9

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). Herman Winick Mentorship October 2, 2012 10

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 Herman Winick Mentorship October 2, 2012 11

Life Lessons • • Lead by example Compassion for colleagues Conflict resolution Communication, communication • Benefits of frequent flyer membership • Parenting Herman Winick Mentorship October 2, 2012 12

Non-Technical Lessons Herman Winick Mentorship October 2, 2012 13

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 Herman Winick Mentorship October 2, 2012 14