Transcript KFA 45 & KFA 71-79 - Indico

IPAC personal review focused on
Accelerator technology
Luis Feliciano, (CERN, Geneva)
Outline


Beam Injection/Extraction

Multipoles kicker

Strip-line kicker

Other types of kickers
Pulsed Power Technology

Pulsed Systems

Semi-conductor switches

Timing and Synchronization

Ion Beam Stripping

Summary
Beam Injection/Extraction - Multipoles kicker

Development of Pulsed Multipole Magnet for SR TUPJE005;
• With
this
new
design
it
is
expected that perturbations to the
stored of electron beam would
suppressed up to 4 % and 0.08 %
horizontally
and
vertically
respectively of beam size.
Beam Injection/Extraction - Multipoles kicker

Efficient Pulsed Quadrupole - WEPMA021;
• This is iron free, quadrupole,
running in a pulsed mode,
which is able to recover a
significant amount of the
pulsing energy for the
following shots .
Beam Injection/Extraction - Multipoles kicker

Ceramic Chamber Integrated Pulsed Magnet - WEPMA049
• A pulsed magnet that has a
combined
structure
of
magnet
coils
with
a
ceramic vacuum chamber.
Beam Injection/Extraction – Strip-line kicker

Development of Fast Kickers for the APS – WEPTY014;
• For the geometry of the
strip-line kicker, a “D”
shaped blades are used
to improve field-uniformity
in the good field region.
Beam Injection/Extraction – Strip-line kicker

Strip-line Kicker for Integral Optics – WEPTY051;
• This kicker his capable to
create
an
arbitrary
controllable kick in 2D, and
will be fit inside an existing
quadrupole magnet .
Beam Injection/Extraction – Strip-line kicker

Fast Injection System R&D for the APS –TUPJE069;
• The present dual strip-line
kicker is driven by high
Voltage pulsers which will
minimize the perturbation on
adjacent bunches due the
very fast rise and fall times.
Beam Injection/Extraction – Other types

Injection Kicker using Switches – THPF034;
• The Kicker system must
allow pole reversal for injection of positively charged
particles.
Beam Injection/Extraction – Others

Fast Kicker - MOPTY033
• The use of wires instead of
plates will allow to reduce the
effects related to induced
charges and currents.
Beam Injection/Extraction – Others

Adapt. between Kicker Mag. and Pulser Cir. – WEPMA025
• The article describes aspects
of mechanical and high
voltage rf matching not only in
between the magnet and
pulser system .
Beam Injection/Extraction – Others

Degassing of Kicker Magnet by Bake-out – WEPMA059
• The heater and heat shielding
panels are installed into the
vacuum chamber. The heater
and metals were used as the
reflectors just near the heater.
Beam Injection/Extraction – Others

Design and Test of the CMD10 Abort Kicker – WEPWI054
• The increasing heating on
kicker ferrite causes lower
magnetic kick field at a nominal
pulse current, this pushed us to
change from the CMD5005 to
CMD10 ferrite.
Beam Injection/Extraction – Others

Harmonic Resonant Kicker Design – WEPMN025
• Compared to a conventional
strip-line type kicker, a quarter
wave resonator (QWR) based
deflecting structure has a much
higher shunt impedance and so
requires much less RF power.
Pulsed Power Technology – Pulsed Systems

Kicker Pulsers for Recycler Nova Upgrades – WEPTY027
• Improvements made on the
thy. pulser, mitigate the effects
of the trigger, the reservoir
and the load impedance on
delay and rise time .
Pulsed Power Technology – Pulsed Systems

Pulsed Power Systems for ESS Klystrons - WEPTY042
• This modulator design uses a hybrid configuration (solid
state switch and pulse transformer) with an advanced
switching regulator to maintain a very flat voltage into
the klystron over multi-millisecond pulses.
Pulsed Power Technology – Pulsed Systems

Development of an IGBT Pulser for Kicker – WEPHA035
• The previous PFN pulser was
equipped with thy. switch, to
accomplish new performance
parameters a pulser using
IGBT switch was chosen.
Timing and Synchronization

All-Optical Sync. of Pulsed Laser Systems - MOPHA032
• The
all-optical
laser
synchronization at FLASH
and
XFEL
provides
femtosecond-stable timing.
Ion Beam Stripping

Analy. of Stripper Foils an Electron Beam Foil - MOPWI032
• Diamond foils are used at the
Spallation Neutron Source
(SNS)
as
the
primary
strippers of hydride ions.
Ion Beam Stripping

Studies of Laser-assist. H- Stripping at 400 MeV - THPF043
• Conventional H- stripping injection by using solid stripper
foils in high intensity accelerators has many limitations
concerning foil scattering beam losses, short lifetime of the
foil including unexpected and rapid foil failure due to
overheating of the foil.
Ion Beam Stripping

Studies of Plasma-based Charge Strippers - THPF018
• Calculations on the charge state distributions in different
charge stripping media are presented.
Summary

Multipoles & Strip-line kickers will be them the futures
kicker magnets?

Assess feasibility for use Switches instead of Thys;

Assess feasibility for optical fiber as replacement of
control cables;

H- Stripping looks to be changeling subject.

IPAC'15: Publication of the Pre-press Proceedings