Acceleration of Deuterons or Alpha Particles in the AGS Page: 3
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- 3 -
EDC-49
of the properties of these primaries-
But in order to
accelerated through the same range of velocities.
do this one would need twice the acceleretins electric field (four times
present linac.
velocity at any point is half that of protons accelerated to ehat
An analyss* of this mode of acc e lore t ion shove that deuterons can
indeed be acceleratod this way to 25 Mev with very little if any read-
focusing el ments between the lnac and the ring would be unchanged;
the inf lector voltage would have to be halved.
Exactly the same cowditlosMi are necessary for accelerating alpha
this would aeceesltate rather elaborate ion sources if nuclei as heavy
as carbon are to be accelerated.)
particles, r completely stripped heavier nuclei vith Z/A - to the
There nxists, however, anocher mode of acceleration, in which the
The ACS linear accelerator is built to accelerate protons trow a
justirs of the linac. The major ch sage necessary is that the Cockeroft-
point. la this node the particle spends two rf cycles between accelera-
velocity 0.04c to 0.315c. The velocity at any point is determined by
Walton preinjector has to be at 375 kv instead of 750 kv. All magnetic
instead of 0.315; deuteron energy - 25 Nev.
the spacing of the drift tubes. Deuterons could. In priMlple, be
same velocity of 0.150c. (however, the stripping has to be complete;
the rf power) needed for protons; this is out of the question with the
*B. ?*. fasraat, Proceedings of Conference ou Linear Accelerators, RL,
1962, p. 285.
ting gaps instead of one. The particles therefore emerge with " - 0.150
XI. Injection-
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Courant, E. D. Acceleration of Deuterons or Alpha Particles in the AGS, report, December 28, 1962; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc1255818/m1/3/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.