Panofsky Prize: Jonathan Dorfan Designing, Building, Leading PEP-II

Transcription

1 Panofsky Prize: Jonathan Dorfan Designing, Building, Leading PEP-II John T. Seeman Deputy Associate Laboratory Director Accelerator Directorate SLAC January 13, 2016 Dorfan-Hitlin Symposium Page 1

2 Jonathan * In the PEP-II era (and now) Jonathan covered a large spectrum of responsibilities: * International (Laboratories, governments) * National (Congress, DOE, NSF, laboratories, universities) * Laboratory (Upper management, finances, agenda, faculty) * Projects (Vision, scope, timing, deadlines, planning, costs) * Staff (Support, promotions, skill matching, compassion) January 13, 2016 Dorfan-Hitlin Symposium Page 2

3 Early PEP-II * The process started for a high luminosity B-Factory in 1987 when Pier Oddone suggested that an asymmetric energy e+e- colliders could probe CP violation in the b-quark sector. The accelerator physicists at LBL started working on APIARY. * Shortly thereafter, Jonathan, just after finishing the MARK-II data taking at the SLC, formed at team at SLAC with the intent of building a B-Factory PEP- II in a 2.2 km tunnel at SLAC. * SLAC, LBNL, and LLNL formed a collaboration (really a team) to design and build PEP-II, led by Jonathan. January 13, 2016 Dorfan-Hitlin Symposium Page 3

4 PEP-II e + e - Collider Overview * BaBar Detector Circumference = 2.2 km = 1.4 miles January 13, 2016 Dorfan-Hitlin Symposium Page 4

5 Jonathan introducing PEP-II: Colliding Beams are like Gunslingers * January 13, 2016 Dorfan-Hitlin Symposium Page 5

6 Dorfan: Introducing PEP-II: What is Unitarity? * January 13, 2016 Dorfan-Hitlin Symposium Page 6

7 Early Ring Concepts ~1989 LER stacked on HER January 13, 2016 Dorfan-Hitlin Symposium Page 7

8 HEPAP Sub-Panel Report April 1990 * January 13, 2016 Dorfan-Hitlin Symposium Page 8

9 PEP-II Mock-up in IR8: Visit of Sec. of Energy Adm. James Watkins ~1991 * January 13, 2016 Dorfan-Hitlin Symposium Page 9

10 CDR Concept: Component Supports ~1991 * LER hung upside down January 13, 2016 Dorfan-Hitlin Symposium Page 10

11 The world scene: Competition summarized by Jonathan * 1991 January 13, 2016 Dorfan-Hitlin Symposium Page 11

12 International B-Factory Accelerator Community Meeting at KEK ~1992 * January 13, 2016 Dorfan-Hitlin Symposium Page 12

13 Jonathan s Words on the PEP-II Project * We are dedicated to responsible management of the three lab collaboration, both in the R&D phase and in the construction phase. SLAC and LBL have a long tradition of developing, designing, building frontier accelerators. LLNL adds additional strength with its excellent technical and scientific base. * The process of expert reviews was very beneficial to the CDR. The reviews occurred early enough that we were able to benefit from them before finalizing the CDR. * We fully recognize that it will take several years of running to achieve the design luminosity: the physics has a safe soft landing at a luminosity of 1/3 rd of design which is where we expect to begin meaningful collisions. * Don t compromise the design to lower the cost. January 13, 2016 Dorfan-Hitlin Symposium Page 13

14 Jonathan: Setting budgets 1991 * Final cost in 1998 = 177 M$ January 13, 2016 Dorfan-Hitlin Symposium Page 14

15 Schedule 1991: * This schedule: * 4 years ( ) * Actual schedule: * 4 years: ) January 13, 2016 Dorfan-Hitlin Symposium Page 15

16 First of several PEP-Rallies at SLAC, LBL, & LLNL (1992) JD: Know your staff and help them when needed. * January 13, 2016 Dorfan-Hitlin Symposium Page 16

17 * PEP-II First Annual Summer Barbeque (~1992) January 13, 2016 Dorfan-Hitlin Symposium Page 17

18 PEP-II Construction Started finally in 1994 * Laboratory Project Management Plan: January 13, 2016 Dorfan-Hitlin Symposium Page 18

19 * July 1994 January 13, 2016 Dorfan-Hitlin Symposium Page 19

20 DOE Representatives worked well with PEP-II John O Fallon and David Sutter January 13, 2016 Dorfan-Hitlin Symposium Page 20

21 The PEP-II Collider January 13, 2016 Dorfan-Hitlin Symposium Page 21

22 * China: IHEP (Beijing) and BINP (Novosibirsk) * Russia: January 13, 2016 Dorfan-Hitlin Symposium Page 22

23 PEP-II Interaction Region Components near BaBar LER HER BaBar Collision point January 13, 2016 Dorfan-Hitlin Symposium Page 23

24 How the beams enter and exit the PEP-II Interaction Region M. Sullivan, S. Ecklund H. DeStaebler January 13, 2016 Dorfan-Hitlin Symposium Page 24

25 * PEP-II tunnel with Sec. of Energy Hazel O Leary ~1996 January 13, 2016 Dorfan-Hitlin Symposium Page 25

26 At Mark II BaBar Beach Party about 1996 * January 13, 2016 Dorfan-Hitlin Symposium Page 26

27 JD: Make frequent workshops and field visits January 13, 2016 Dorfan-Hitlin Symposium Page 27

28 Interaction Region Support Tube Be chamber Silicon Vertex Tracker SVT January 13, 2016 Dorfan-Hitlin Symposium Page 28

29 PEP-II RF Cavity (Schwarz, Rimmer, Pederson) Early design and testing at LBL. High power production cells. Fully fitted cavity units with HOM dampers. January 13, 2016 Dorfan-Hitlin Symposium Page 29

30 SLAC B-Factory RF Klystrons (1.2 MW) * January 13, 2016 Dorfan-Hitlin Symposium Page 30

31 David, Jonathan: Finished Drift Chamber at TRIUMF January 13, 2016 Dorfan-Hitlin Symposium Page 31

32 Inspecting Final Drift Chamber (1997) (D. Rogers) January 13, 2016 Dorfan-Hitlin Symposium Page 32

33 Stew Smith and David MacFarlane: Drift Chamber January 13, 2016 Dorfan-Hitlin Symposium Page 33

34 David Hitlin Inspecting the Accelerator January 13, 2016 Dorfan-Hitlin Symposium Page 34

35 HER Vacuum System completed May 30, * January 13, 2016 Dorfan-Hitlin Symposium Page 35

36 * * Two beams collided July 23, 1998 January 13, 2016 Dorfan-Hitlin Symposium Page 36

37 PEP-II Dedication (October 26,1998) With Energy Sec. Bill Richardson * January 13, 2016 Dorfan-Hitlin Symposium Page 37

38 A Private Conversation January 13, 2016 Dorfan-Hitlin Symposium Page 38

39 PEP-II Dedication October 26, 1998 * January 13, 2016 Dorfan-Hitlin Symposium Page 39

40 * Dedication for First Collisions on July 23, 1998 January 13, 2016 Dorfan-Hitlin Symposium Page 40

41 PEP-II Peak Luminosity by Month ( ) * Design January 13, 2016 Dorfan-Hitlin Symposium Page 41

42 PEP-II Reaches Luminosity October 2005 Jonathan called within a few minutes! * January 13, 2016 Dorfan-Hitlin Symposium Page 42

43 Diana Rogers Photos January 13, 2016 Dorfan-Hitlin Symposium Page 43

44 PEP-II and Rugby * Jonathan very much enjoyed his rugby during his early school years, discussed often the strategy of rugby. * He quoted his coach saying: Play hard in the first half but I want you guys to play harder in the second half, scoring more goals than the first. January 13, 2016 Dorfan-Hitlin Symposium Page 44

45 PEP-II total integrated luminosity: 557 fb -1 First half 140 fb -1. Second half 417 fb -1. January 13, 2016 Dorfan-Hitlin Symposium Page 45

46 PEP-II Accelerator Records * PEP-II held the overall world luminosity record (1.2 x ) * for three years. Now second to KEKB (2.1 x ) * PEP-II Present: World highest stored electron current (2.1 Amps) * PEP-II Present: World highest stored positron current (3.2 Amps) * PEP-II Present: Largest number of colliding bunches (1722) January 13, 2016 Dorfan-Hitlin Symposium Page 46

47 Last day April 8, 2008 PEP-II : Jonathan is at the Focus! * January 13, 2016 Dorfan-Hitlin Symposium Page 47

48 Jonathan: Congratulations and Thank You! January 13, 2016 Dorfan-Hitlin Symposium Page 48