Berkeley Proton Linear Accelerator

84 Pages·1953·12.117 MB·English

i
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the purpose of exte as far as possi
hough a dee volt
significant theo s apparent for line
as a means of reac
tatron was known to
than that of' the electron line
efore the war, b ption of the type n
by Do H. Sl0mo3
d in detail by s and as they pr
sed in this article on
acceleratorso
ion as outlined Fastically altered in 1945
the synchrotron In principle this remove
limit, and rai iderably in the betatron c
.
Clearly the lh elerator must have had some
vantage to have remained pictureo Although rece
have shown that the original a
ar accelerator were no tate of the art
em t o be contrad convincing manner,
t The eost of a rela
ube of the energy, so
s merely scaled in i dimension, proportiona
the other hand, the cos linear accelerator va
st power of the ener
on logarithmic paper, the y be straight lines
*
There w i l l always rsection of the two lin

xtending the lengt chine beyond the
but it was assumed that this
N rs t section. time it appeared wi
energies, such a
us of the proton syn at Berkeley, no extensi S
rmed here pointed out that at
of no teohnical re s extension i
Xn fact, J. Ho innesota is now bui
line cslerator of the same is 100 feet long, an
protons of 65
moment, then, we are g on using the 40-40 or
001. The mach
hysics research articular, the cha
-
1 beam of the linear aco r are most attractive.
circle of 3 ram di S-
I
is about 3 x lO-% The avemge e beam is about lo3 times
em current densit
I
f
The general design ch
linear accelerator been discussed
S1atero6 In particular, Slater po at the alrbainable
at a peak power
the free-spatie mvele onstant K depen
ater. A linear
sh Atomic Energy Est actively engaged in
of R 600 Mev proton linear accelerato
\
t

t appear as if the tt
items. Actually
er unit length is a feasible, compatible
available power so
tation originall ergy gains of on1
'.
t ne requires tha ielding be employ
86 about the
Labbratory have rface layers of esponsible
for nos electron emiss gains of three Ne r.
roury or ion pumps rgy gradients" o
be employed, with lues of x-ray eJhissio
rate
f
The choice of duty oyole is d -
and tube power Inorease in repe
c
crease the cost
e a duration of the 1
on rate is then ohos ae with avail
The injection energy in t ccelerator was c
r this choice was 4 &v is a reaso
electrostatio g the construction
a t this laborat search tool.
it was intended to aoco
ple scattering made it necess
energy. The 1
evatron* is desi 500 Kev pro