Flexible, durable proton energy degraders for the GE PETtrace

J. W. Engle; K. Gagnon; Gregory Severin; H. F. Valdovinos; R. J. Nickles; T. E. Barnhart

doi:10.1063/1.4773933

Flexible, durable proton energy degraders for the GE PETtrace

J. W. Engle, K. Gagnon, Gregory Severin, H. F. Valdovinos, R. J. Nickles, T. E. Barnhart

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Abstract

In order to limit the formation of radioisotopic impurities during proton bombardments of solid targets, two methods of introducing degrader foils into the beam
upstream of the target were tested. The first design uses a 445 μm thick fixed degrader machined from a single piece of aluminum. The second design permits introduction of foils made of any material and was tested with foils as thick as 635 μm (also aluminium). In both cases, the foils are cooled with by water flowing through an annular channel outside the radius of the beam. Both designs proved durable and tolerated proton beam currents in excess of 80 μA.

Original language	English
Journal	AIP Conference Proceedings - American Institute of Physics
Volume	1509
Issue number	1
Pages (from-to)	25-29
ISSN	0094-243X
DOIs	https://doi.org/10.1063/1.4773933
Publication status	Published - 2012
Event	14th International Workshop on Targetry and Target Chemistry - Playa del Carmen, Mexico Duration: 26 Aug 2012 → 29 Aug 2012 Conference number: 14

Conference

Conference	14th International Workshop on Targetry and Target Chemistry
Number	14
Country/Territory	Mexico
City	Playa del Carmen
Period	26/08/2012 → 29/08/2012

Keywords

Cyclotron
Degrader
Proton energy
Solid target

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title = "Flexible, durable proton energy degraders for the GE PETtrace",

abstract = "In order to limit the formation of radioisotopic impurities during proton bombardments of solid targets, two methods of introducing degrader foils into the beamupstream of the target were tested. The first design uses a 445 μm thick fixed degrader machined from a single piece of aluminum. The second design permits introduction of foils made of any material and was tested with foils as thick as 635 μm (also aluminium). In both cases, the foils are cooled with by water flowing through an annular channel outside the radius of the beam. Both designs proved durable and tolerated proton beam currents in excess of 80 μA.",

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author = "Engle, {J. W.} and K. Gagnon and Gregory Severin and Valdovinos, {H. F.} and Nickles, {R. J.} and Barnhart, {T. E.}",

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AU - Engle, J. W.

AU - Gagnon, K.

AU - Severin, Gregory

AU - Valdovinos, H. F.

AU - Nickles, R. J.

AU - Barnhart, T. E.

N1 - Conference code: 14

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N2 - In order to limit the formation of radioisotopic impurities during proton bombardments of solid targets, two methods of introducing degrader foils into the beamupstream of the target were tested. The first design uses a 445 μm thick fixed degrader machined from a single piece of aluminum. The second design permits introduction of foils made of any material and was tested with foils as thick as 635 μm (also aluminium). In both cases, the foils are cooled with by water flowing through an annular channel outside the radius of the beam. Both designs proved durable and tolerated proton beam currents in excess of 80 μA.

AB - In order to limit the formation of radioisotopic impurities during proton bombardments of solid targets, two methods of introducing degrader foils into the beamupstream of the target were tested. The first design uses a 445 μm thick fixed degrader machined from a single piece of aluminum. The second design permits introduction of foils made of any material and was tested with foils as thick as 635 μm (also aluminium). In both cases, the foils are cooled with by water flowing through an annular channel outside the radius of the beam. Both designs proved durable and tolerated proton beam currents in excess of 80 μA.

KW - Cyclotron

KW - Degrader

KW - Proton energy

KW - Solid target

U2 - 10.1063/1.4773933

DO - 10.1063/1.4773933

M3 - Conference article

SN - 0094-243X

VL - 1509

SP - 25

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JO - AIP Conference Proceedings - American Institute of Physics

JF - AIP Conference Proceedings - American Institute of Physics

IS - 1

T2 - 14th International Workshop on Targetry and Target Chemistry

Y2 - 26 August 2012 through 29 August 2012

ER -

Flexible, durable proton energy degraders for the GE PETtrace

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Keywords

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