high-current low-energy rhodotron optimized for materials...
TRANSCRIPT
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Page 1 /18We protect, enhance and save lives
High-Current Low-Energy
Rhodotron
Optimized for Materials
Enhancement
Jean-Louis Bol
IBA Industrial
Sept 23, 2008
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Summary
� High-Current Low-Energy Rhodotron
Optimized for Materials Enhancement
� New configuration
� Improved performances
� High precision features
for cargo detection of dangerous material
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The goal
The goal was to treat thinner product
(cables and tubes)
Using the full available power
Without damaging the 10 MeV performances
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Rhodotron Standard Version
� Was optimized for high power at 10 MeV
� The current was not pushed much more than needed to reach the 200 kW at 10 MeV > 20 mA
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Rhodotron Standard Version
� Main port at 10 MeV (200 kW)
� Additional port and horn from 3 to 5 MeV
� But limited in current at 20 mA so limited in power
� 100 kW at 5 MeV
� 60 kW at 3 MeV
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New configuration: One Output
� One energy beam is re- injected in the other line (10 MeV in the 5 MeV)
� The switch from one to the other energy is fast (1 min)
� 270°°°° bending magnet are use to guarantee the stability (achromatic)
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Actual installation at LEONI Studer Hard
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Improved performances: Electron gun
� The electron gun has been improved to push more beam to the cavity
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Improved performances: Electron gun
� From the design of the TT 1000 that produce 100 mA,
� a parallel version has been design, � Using the larger cathode of the standard TT 1000
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Improved performances: Bending magnets
� Improved bending magnets around the machine
� A new design for a reduction of the strayed field
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Improved performances: Bending magnets
� > The focusing effect is better controlled and balance between the 2 planes
� Larger gap for larger beams
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New configuration + high power at low energy
� The full power (190 kW) already available at 10 MeV
Is now available at 5 MeV
So the throughput is nearly double at 5 MeV (up to 40 mA)
� The switching procedure is fast and simple
� The beam is available on a single horn limiting the cost of
the building and conveyor
� A 3 MeV/10 MeV configuration is also available
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High precision new features
For detection purpose high level performances have been developed on the Rhodotron
� Time control and precision of the current (and so the power) has been push to the limit: From any current to any other current (even full power) in less than 80 µS.
� A high precision beam line and horn
On the 3 meters Scan
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High precision new features: current control
� The standard beam current timing control (25 mS) (cathode is grid controlled)
� A direct and feed forward electronic control has been added
From any current to any other current (even full power) in less than 80 µS.
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High precision new features: super parallel beam line
On the full 3 m scan
� Achromatic
� Stable dimensions
� Parallel output (+ -1°)
From active quadrupoles
Scanning magnet
Active quadrupoles
Parallel magnet
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High precision new features: super parallel beam line
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The Rhodotron
� Full power (200 kW) of TT 300 is not only available at 10 MeV but also from
� 5 MeV
� down to
� 3 MeV
� The highest finesse of the beam control
� In current
� In time
� Position
� Shape
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Special thanks to Tony Berejka
for the fantastic work on the E-beam booklet
Thank You