ICFA Future Light Sources Subpanel MiniWorkshop on XFEL Short Bunch Measurement and Timing Stanford

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ICFA Future Light Sources Sub-panel
Mini-Workshop on XFEL Short Bunch Measurement
and Timing Stanford Linear Accelerator Center,
July 26 - 30, 2004
Executive Committee John Galayda, LCLS-SLAC
Joerg Rossbach, DESY-Uni. Hamburg Kwang-Je Kim,
APS-ANL
http//www-ssrl.slac.stanford.edu/lcls/xfel2004/in
dex.html
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Organizers Jerry Hastings SSRL
Patrick Krejcik SLAC Juhao Wu SLACHolger
Schlarb DESY

• Measurement techniques for electron bunch length
  and arrival time
• Diagnostics for spontaneous undulator and XFEL
  radiation for the determination of the temporal
  profiles.
• Timing and synchronization of the electron beam,
  acceleration RF and ultra-fast lasers

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• Workshop focuses on technical aspects of monitor
  systems to characterize the longitudinal electron
  and photon pulse profiles especially after final
  compression
• typical time scales of operation is 100-200
  fs
• good control of the accelerator requires
  resolutions of 10-50 fs
• and taking into account potential micro-bunch
  instabilities lt 10 fs
• beside the high precision the monitor has
• a large dynamic range
• is fully parasitical and non-destructive
• allows a detailed recording of bunch to bunch
  parameters
• ultra-fast processing time for feedback loops
  (lt10ms LCLS, lt1us XFEL)
• suited for non-standard operation (rep. rate,
  charge, orbit, etc.)
• insensitive to accelerator jitter
• operation with high reliability, availability
  and a high degree of automation
• ? Very likely that different system with
  complementary abilities are required
• Question which monitor can be used and what is
  the best suited combination

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• Workshop structure
• Limited number of talks
• Overview on the different techniques
• Recent experimental result using the new
  techniques
• Background information on the theory
• Common understanding on the various subjects for
  all participants
• Update on the state-of-art systems
• Current limitations of a system and potential
  upgrades
• Sufficient time for discussion
• on the potentials of the different methods
• to identify open items and question to be
  addressed
• Exchange of technologies and successful
  developments
• Distribute homework on required theoretical or
  exp. investigations
• Search on new techniques or for combinations of
  known methods

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• Workshop structure
• Timing and synchronization (Mo/Tu)
• Beam stabilization, increase performance of
  monitors system
• conventional RF systems
• LLRF regulation
• applicability of new synchronization methods
• Photon diagnostics (Tu/We)
• simulations spont. FEL
• techniques on spectrum, pulse power and pulse
  length and coherence
• Electron diagnostics (Th)
• electro-optical techniques
• Coherent radiation diagnostics and T-cavity
• Not obvious if photon or electron techniques
  have higher potentials

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XFEL Workshop Barbecue A sunset picnic has been
planned in a sylvan setting just a short drive
from SLAC in the Santa Cruz Mountain Foothills. A
full BBQ dinner with refreshments will be
provided at no cost to workshop participants and
their companions through the generous support of
Varian Corporation. Jeff Morgan, local engineer
from Varian will be on hand if youd like to
thank him. WHEN Monday 6 p.m. until 9 p.m.,
start at guesthouse WHERE Foothill Park, Palo
Alto, in the Oak Grove group
picnic area
Oak grove Picnic area
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Baseball Game
Tuesday evening Depart SLAC 5.30 p.m. from
Guesthouse! Tickets to be picked up from Helen
ODonnell
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Banquet Dinner
Insalate Caesar Salad Hearts of Romaine and Grana
Padano with our famous Caesar dressing Insalata
Mista Baby field greens with sliced Fuji apples
and candied walnuts, tossed in balsamic
vinaigrette ________ Piatti di Mezzo (Your choice
of one of the following) Gemelli agli
Asparagi Gemelli pasta with spring asparagus and
herb sauce, with a pesto of basil and roasted
asparagus Orecchiette alla Sarda Slow simmered
sauce of house made Sardinian sausage ,tomato
sauce, with white wine and a touch of saffron and
herbs Salmone Arrostita Pan roasted Salmon with
citrus jus, served with potato purèe and market
vegetables Griglia Mista Mediterranean style herb
marinated Sirloin and house made Italian sausage
with roasted Yukon Gold potatoes and balsamic
garlic Blue Lake green beans ________ Dessert Pann
a Cotta Traditional Italian cooked cream with
strawberry sauce Torta di Cioccolato House made
Chocolate torte with raspberry sauce
Wednesday 7 pm Café Niebaum-Coppola 473
University Ave Palo Alto 50 per person
Includes Wine Tasting Of Fine Napa
Valley Niebaum-Coppola Wines