LETTER TO LESLIE R. GROVES FROM WILLIAM J. DONOVAN RE INFORMATION SENT BY COLONEL DIX

• Document Type: FOIA
• Keywords: AZUSA
• Collection: FOIA Collection
• Document Number (FOIA) /ESDN (CREST): 0005645165
• Release Decision: RIFPUB
• Original Classification: U
• Document Page Count: 10
• Document Creation Date: June 24, 2015
• Document Release Date: March 29, 2011
• Case Number: F-2011-00877
• Publication Date: December 1, 1944

APPROVED FOR
RELEASE L DATE:
21-Mar-2011
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Major General Leslie LGroves
- .Room 5120, NWD BldgWashington, D.C.
Dear General Groves:
.?
Dix som.e material whici
I am se- .usual icAt:tt6.t
which,
4. . . , ear
4,totttaht.6:
. our, ,
- I know ?Tc).
our Bern- representative has,,
been able to ,penetrate enemy acti'
Since, our
, ?
asked our Parls
this material -
Major Furman
copies through
not yet rece
to furni-sh, an ,additiona.-
Dix.
prom: OSS Bern
)ate of Reports Nov. 16g. 1944
loos: Pluto
va1uation: 13,,
3ubjeot: it.ZUBA
)iztribution: lTaahington for 109 nd 106
'Pari forMajor Furman
Dallenbaoh'
Enclosed is 'LOA and design of Dallenba''
-
8,0BR-OTCLOTRON 111 puma,
,
The Super-cyclotron has been invented and designed
Ottiell-enbach- a Swiss citizen who has been living
Bare and is a convinced 114.0$0,
' is a very able engineer
,
whenf f the electr
' 0 :- ' lit4 L.---
c ----a,.; -7- iii-e-4 cl.
' - -- '4,--r-' termiii ? i
'?
theory in P
,. ,e0094.with .0_,,.P-47.-- . it.i0.. a;.1-044 oo44a,
?l.
typei -.. ,. '.--
:at4tior the.,..154414.93r,qi''''. 9'
by. a. m*in,
in enmw
he developed the Pin
.bcratorios 4-4140
work on reqppAtto
!ave-gOrterek:**
th work
we's already-WOrkin-
444!;goVernsient.. ge,-0
.aaent of-r0ei:en0-#4whio
-
terent-,itta4O4Ci-7--
Afar" sellae
.e_.etintroVe
4tertiafte- -0
bigly 4144itrif
. ,
*4'...40(404-440*
sign ready axd detat led
objections made by- his oozitrimpTessed by the thOrou{-
pi#0decide
volt0 Ordinarily tiis would-
tion is being rushed aa a war
cyclotron will be ready
.****4
that i, in the simmer of 100
at viivt**0 of th?
00*.40. could be Star
nberg. and ."14oliere-*ee.
projeot '04jOya
14st.tlitee:which*OP
the meeting w
,
'
. '4p to 100 mi
of a super-cyclotron for 10
dirt ,-totir years,,
d it is *like!
t .he noted that.
al414'.k.Oha#-Oitt.4i
644, A. -4*,,x4:-:50er
eellonbach every wee
prity*., ?It `kleoli;ii
only in Serlin'ha
A ;very scheraatio description .0'
works hs.been obtained by Flu
bera (a German 1.4d4atrt
_
lahbaoh often_
'IjOitrzie
about 1.00 canals, so
orreepon4 t0-100'to 20C
opposite
ie 'article on to the ol
act thet for
-volts.,?-?
,y begins to B;A
hat the Piagl4T40
?nala;. this is ob
distance 4,tin th
e total aoqeler
on voltto At- the e
"40i' of041. with entri
'0- be bomber
al constructional.
detsi
0329, .exact shape ?o
sutly, or
ber, ?Ziroptt elerg
?
.a.ittid,. at thP,
ibach was in a position to c
members; .a.?scientific COf,i4i,
itner, had particularly itud
objections, but Daelleilb.:
-
According A000
formidable means at his disposal &id
committee, it is probable ,that the
The "schematic Principle cf the
uparokolotron Is. 00 follows:.
:The mein 'Arentnta chamber?(..1;,-in fig.
having an H section, the axis of th
*.I#6h-s-t ?-6t 6*62,01666?..size
metres'14iirM)constitutes a cob
thick copper 'Water. cooled from the
bymean 0 an, aerial 'inside it
00.54Ath,40 xikaa begi
field takes place '66'W).64the two o
-
bar of the H in the sectional :figur
1 million, and 3 million 70:3,!..40 betwe
chamber, a. very high vacuum must be
even less) and this prasentB?ne of
sise of the chamber.
il-a.',06#0.drio 4 1704144x:
o cylinder -04L4g 4,, z, This*.
00?A S metres ottSi
the wa
utaide.''ltiben'' the raeCnatcr
041Ong'4t'0.4;:.0?.:Or6P, e'
n.5 to
?wso-At:04_, 004,
-Oita taCep
thia
al*ernetinei
,e.444'2 acs,
nedInt leastmain.diffica,: a
ed
rio
erefore n fto?t?
non nt.
h the material hich
and i
th 6 vacuum chamber
-
y axe ooicexitrio and
'oehelis "lies in 6 to
dicato these canals w
er set (with centre i
,74-Se
?
t-initj?:efdwO
of ions into the .7re,
ne at a poaitie pa
? aloi?Olt, when face 3 is pos
wards' l'aeo
enterill .canal .? a, a'
ole X1:6wa ..66caotly a pa* .:66
particle reaches .%
411 be invertet
so the prtiolew
- facel.3, and WU
elf
rid *Side, thp reigns
o eantre''...6f each of t
be upper set and 7 1
,
oint dy; andwith
centre in-
ta in'pCint. ;3 the enal lea
'
4e enters the vacuum chamb
aid
,?=2
f'oe'is negativ4,
O 1,..tOto
reapon&tng thi")axis 0-, oana
14411i-
.1)ifigea-:407.0:44W?1171:410:7/
1
.
gener has a daughter in Australia. He also h.
sicist, who'15;tudied in o1ogna, but is at present
-
eXICi Can you get mo a personal letter of
S tr gth , 4'4(
I can use to?AO to
rpplutvistenei. )34,
will try.to:Ao
ource knows the re 94.0.After a look at the '*
--in the. cellars of the __.,...._,nearby Burg'acitle]:.40,11
owici Ls peak thatprotrudes iv through it
castle is probably honeycombed with cell
-
D&llenbacht
At fr, requett. of Major ars writing 'up -h
. , . .
few notes on
pfi4lehbach ;which I had not p*ut Pr:plii.:0,us
formerlyHe was .-11,-Ith- tohto-
z*B0.134tosts, (Se
. .. .
licensedwhich is
to the Sacheron firm in GenevaOA
by iiiii4-ai'fie
- ,,,..:.,. supervision,'P er$ an,
Of'#ii.6.adth,,!inci reputed,- to to 04-&...
... .. r. . -....,of hearing.
at.?his wife divorced4itie_She married a second time
propr?rin DavostSwitzerland. Dllenhach visited
land six 4T40 said"abused "- her ,as
still. his J.41, an.,eot.44i4xcaKs
Dalleribach has a child -: abott
'ith him to Switzerland 411, this vi:
.nsorne school. We hdpeto find ti
-
-Am.,.to his father...,