celebration of dorfan/hitlin panofsky prize january 13, 2016 thoughts on pep-ii and jonathan dorfan
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A Long Collegial and Personal Friendship : David was spokesman of my thesis expt., E92 at SLAC ~1980: MARKII Liquid Argon Calorimeter construction, testing, commissioning 1989 – : B Factory, PEP-II/BabarTRANSCRIPT
Celebration of Dorfan/Hitlin Panofsky PrizeJanuary 13, 2016
Thoughts on PEP-II and
Jonathan Dorfan
Receiving a Prize of this caliber is a great honorbut
Receiving a prize that bears Pief’s namemakes it doubly special
As a scientist and administrator, I strove to emulate Pief’s unflinching dedication to: Above all, the science must be outstanding Technical innovation moves science/humanity forward People are the most critical resource: respect & nurture
them International cooperation is essential to science Never allow expediency to undermine integrity: stand
firm for what is “right”
A Long Collegial and Personal Friendship
1972-1976: David was spokesman of my thesis expt., E92 at SLAC
1977 - ~1980: MARKII Liquid Argon Calorimeter construction, testing, commissioning1989 – : B Factory, PEP-II/Babar
Slide Courtesy of Pier Oddone
This led to at least 21 e+e- B Factory concepts and proposals (19Y(4S) + 2 Z0) and several hadronic machine approaches (HERA-B, ..
Pier Oddone’s concept of using an asymmetric e+e- collider to boost the distance between the two decay vertices was, in the end, the most successful approach.
Table Courtesy David Hitlin
Two colliders, PEP-II and KEKB, were ultimately built
•Y(4S) Storage Rings Y(4S)Linac-Ring
Collider
Y(4S)Recirculating
Linear Collider
ZFactorySymmetric Asymmetric
PSI (2) APIARY Grosse- Wiesmann
Amaldi/Coignet SLC
Novosibirsk CITAR JLAB ARES LEPKEK
accumulatorPEP-II UCLA
CESR Plus PETRA TBAISR Tunnel
KEKaccumulator
KEK-BCESR-B
Slide Courtesy of Pier Oddone
Early PEP-II Ring Layout (two tunnels) (1989)
Page 7
Workshop in Chateau de Blois, Blois, France: Summer 1989CP violation and beauty factories and related issues in physics
Workshop in Chateau de Blois, Blois, France: Summer 1989CP violation and beauty factories and related issues in physics
SLAC Colloquium March 1990 – Two rings in one tunnel
1990
Sin2b = ~ 0.17
1991
Sin2b = ~ 0.95
1991
John O’Fallen: The believer
The Sponsor : DOE
On-Site Oversight Office
Danny Lehman: Uber “Auditor”
The Funders : Congress
PEP-II Central Management
Special Assistant
Whatever Needed To Be DoneSafety Data Management Administration
PEP-II Construction “System Managers”
High Energy Ring Low Energy Ring Injection Controls
RF Utilities
Installation
Backgrounds,Interaction Region
Sampling of Personnel That Worked on the Early Design And/or that were part of the Construction Team
e- (e+) at end of New Injection Lines: Oct ’95 (97)
e- beam through 1/3 of HER : May ‘97
Stored e- beam in High Energy Ring: June ‘97
e+ beam to Low Energy Ring Arc 7 Temp. Dump: Jan 98
Strategy of Staged Completion and testing of the major subcomponents with real beam
Measure/Characterize the backgrounds before Babar moved on line
U. Wienands, SLACB-Fact. Symposium, 27-Oct-08 26
U. Wienands, SLACB-Fact. Symposium, 27-Oct-08 27
1.2x1034/cm2/s !!1875 mA/HER
2900 mA/LER
1722 bunches
≈154/fb
U. Wienands, SLACB-Fact. Symposium, 27-Oct-08 28
PEP-II Turned Off April 7 2008
*
October 27, 2008 PEP-II BaBar Symposium Page 58
PEP-II Team April 2008
Receiving a Prize of this caliber is a great honorbut
Receiving a prize that bears Pief’s namemakes it doubly special
As a scientist and administrator, I strove to emulate Pief’s unflinching dedication to: Above all, the science must be outstanding Technical innovation moves science/humanity forward People are the most critical resource: respect & nurture
them International cooperation is essential to science Never allow expediency to undermine integrity: stand
firm for what is “right”These principles were all necessary, and more importantly, ever-present for the success of the PEP-II a adventure