1. DR Kicker R&D: Goals and Work Scope
Michael S. Zisman
and
Tom Mattison
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

2. Caveats This is the first pass, not the final story
Proposed activities not (yet) based on funding realities
The global DR R&D effort will be defined and assessed by the S3 task force
All WPs except last 2 have “very high priority”
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

3. R&D Goals Specify component performance parameters
rise time, fall time, tolerances
can any be relaxed to make the system more robust or cheaper?
acceptable impedance, vacuum properties, ECI issues
Demonstrate one or more technologies that meet specs
bench tests of pulser
short-term, long term, abuse-tolerance
verify burst mode operation
bench tests of kicker structure
bench tests of pulser+structure+load system
beam tests of pulser+kicker+load+controls system
measure system pulse shape (can be single-pulse, should be high-resolution)
verify beam interaction properties (ideally in realistic ring)
emittance preservation
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

4. Institutions Involved
U.S.
Cornell, FNAL, LBNL, LLNL, SLAC, UIUC
Japan
KEK
Europe
INFN-LNF
It would be good to involve other groups in this “very high priority” effort
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

5. Work Packages (1) Inductive Adder FET Pulser Plans: Comments
Cook, Burkhart, Cassel, Krasnykh, Larson, Ross, Naito
Plans:
FY07: Modulator prototype development
FY08: Modulator prototype testing; HA element design
FY09: High Availability testing
Comments
beam testing planned in context of ATF2 program
need to improve intrinsic rise time before High Availability becomes the main issue
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

6. Work Packages (2) Drift Step Recovery Diode Pulsers Plans: Comments
Krasnykh, Burkhart, Gollin, Meller, Urakawa, De Santis, ??
Plans:
FY07
continued testing of commercial (FID GmbH) limited voltage and rep-rate devices (bench, beam)
pulser development (SLAC + SBIR)
FY08
DSRD as pulse-sharpener for other pulsers
Comments
existing “FID” tests seem to have been DSRD pulsers!
concerns about robustness
single-source issues
SLAC+SBIR effort helps address that
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

7. Work Packages (3) Collaborate with FID GmbH Plans ?? FY07 FY08
determine switching technology used in what we have tested
test pulsers with real FID used as final switching element
understand proposal for high-voltage, high rep-rate pulser
switching technology
other technical issues being addressed
level of information sharing
decide how to proceed
FY08
proceed
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

8. Work Packages (4) Stripline structures Plans FY07 FY08
EM simulations (field uniformity, matching, tapers, fins, etc)
De Santis, Krasnykh, LNF, ??
feedthrough development (matching, voltage, manufacturing)
Krasnykh, LNF, ??
structure fabrication
LNF for DAΦNE (already done for ATF2)
structure bench tests
could be done with beam test structure
FY08
structure tests with beam
DAΦNE, ATF2
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

9. Work Packages (4) cont’d
Comments
systematic studies of kicker structure and feed-through design need to be expedited
need to look for trapped modes in structure
with computer codes
with wire measurements (LBNL?)
develop damping methods for structure if needed
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

10. Work Packages (5) Beam Tests at Fermilab A0 Plans:
Gollin, Meller, Edwards, ??
Plans:
FY07
continue tests with FID pulser: time & amplitude stability, reliability
systematics of time measurements
kicker measurement sensitivity to AØ beam stability
FY08
investigate possibility of tests with other pulser technologies
investigate AØ reconfiguration: redundant measurements; two phase detectors; better BPMs; lower fringe field magnets
FY09
reconfigure AØ for measurements of realistic system
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

11. Work Packages (6) Beam tests at ATF Plans: Comments
Urakawa, DeSantis, Meller
Plans:
FY07
improve instrumentation for kicker tests
bpms; laser wire emittance measurements; DAQ
retest system with multiple bunches
plan to complete test program during 2007
may preclude tests of other candidate systems
Comments
most realistic test under “combat” conditions
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

12. Work Packages (7) Beam tests at DAΦNE Plans:
Alesini, Guiducci, Marcellini, Raimondi, DeSantis
Plans:
FY07
Feedthru development, stripline fabrication, bench tests
FY08
Install and operate in DAΦNE production running
FY09
test with alternative pulser systems ?
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

13. Work Packages (8) Examination of other pulser technologies Plans:
Mattison, ??
Plans:
FY07
bench-test ferrite shockline with (FET?) pulser
explore other technologies to see if any have promise in terms of performance, cost, reliability, tech transfer
FY08
develop and bench test other systems if promising candidate identified
FY09
test with beam?
Comments
ferrite shock lines, avalanche transistors, hard tube pulsers are candidate technologies identified to date
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

14. Work Packages (9) Possibilities Outside the box
Gollin, Meller, Willeke, Wolski, Rubin, ??
Possibilities
Fourier transform scheme
RF separator for kicker-septum region
off-axis injection with slow kickers for electrons
big slow bump and small fast kick for electron extraction
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)

15. Summary
We have begun task of planning and prioritizing DR R&D kicker program for the TDR phase
Still lots to do
develop priority list reconciled with RDB priorities
develop effort and M&S requirements
much of this exists already at least partially
develop critical milestone list
based on assumption that required resources will be provided
indicate what key questions will be answered each year and why they are important
Costs matter: should we focus on least expensive technology?
Global Design Effort
September 28, 2006-Cornell (Zisman/Mattison)