DEVELOPMENT OF GEIGER-MUELLER COUNTERS AT VEB TRANSFORMATOREN - UND ROENTGENWERK DRESDEN (TRARO)
Document Type:
Collection:
Document Number (FOIA) /ESDN (CREST):
CIA-RDP80-00810A007400620010-4
Release Decision:
RIPPUB
Original Classification:
S
Document Page Count:
5
Document Creation Date:
December 21, 2016
Document Release Date:
June 2, 2008
Sequence Number:
10
Case Number:
Publication Date:
September 7, 1955
Content Type:
REPORT
File:
Attachment | Size |
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CIA-RDP80-00810A007400620010-4.pdf | 222.67 KB |
Body:
Approved For Release 2008/06/02 : CIA-RDP80-0081 OA007400620010-4
INFORMATION REPORT
25X1
This material contains information affecting the
National Defense of the United States within the
meaning of the Espionage Laws, Title 18, U.S.C.
Secs. 793 and 794, the transmission or revel-
ation of which in
25X1
any manner to an unauthorized
SECRET
person is prohibited by law.
COUNTRY East Germany
SUBJECT Development of Geiger-Mueller Counters DATE DISTR.
at VEB Transformatoren - and Roentgenwerk,
Dresden (TRARO) NO. OF PAGES
DATE OF INFO.
PLACE ACQUIRED
DATE ACQUIRED
THE SOURCE EVALUATIONS IN THIS REPORT ARE DEFINITIVE.
THE APPRAISAL OF CONTENT IS TENTATIVE,
(FOR KEY SEE REVERSE)
7 September 1955
1. In 1954, the development of various types of Geiger-Mueller radiation
counters was completed by the Radiation Measurement Sub-Section of the
X-Ray, Radiation,snd Mlectrioal TherapF Section of VEB Trans formatoren-
und R?entgenwerk Dresden. This sub-section is headed by Eng. Frommhold
(fnu) During 1954.90 Geiger-Mueller counters of all types were de-
livered to the USSR. In 1955, 600 counters are to be delivered there,
2. The following are the types of Geiger-Mueller-counters so far developed
by the Dresden enterprise:
a, Type Series IA:This series consists of the types IA1, IA10, IA100,
and IA300. The types IA1, IA10, and IA100 are used for counting
X-rays and gamma rays from 20 keY to 3 MeV and for hard beta rays
over 1 MeV. The type IA300 is used for counting X.-rays and gamma
rays from 50 keV to 1 MeV. The tubes are made of glass with a
small potassium content and are provided with a graphite layer
cathode. The filling i elf extinguishing (SelVptloeachende
Fuellung). The following table lists the technical data of the
counter types of this series:
has
IA10
IA100
IA 00
Effective volume in cubic
centimeters, about
1
10
100
300
Total length in-millime*ers
115
160
270
475
Largest diameter in millimeters
2
20
20
25
40
Wall"strength in mg/cm
, about
35
35
35
140
Input voltage in volts
1,000
1,000
1,000
1,000
Minimum plateau length in volts
160
200
240
220
Plateau rise in % per:&00 volts Les
s than
Loco than Less
Less
th
an
D
10
8
than 5
5
ead tim& is micro-seconds
40
60
160
200
Zero effect in impulses per
minute, about
Mi
i
li
20
8
100
275
650
n
mum
fe term in impulses
10
8
in
8
10
8
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.25X1
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bo Tjga Series I 3B: This series consists of types 1319 IB10, and IB100.
All three types can be used for the counting of X-rays and gamma rays
over 20 YeT and hard beta rays over 1 MeT. They are particularly
sensitive to I? Rays from, 60 keT to 120 keT. The counter tube is made
of glass with a small potassium content and is provided with a cathode
of precious metal. The filling is self-extinguishing. The following
table lists the technical data of the counter types of this series:
Type
131
-'
0
13100
Effective volume in labia osntimetere,
about
1
Total length in millimeters
115
160
270
Largest diameter to millimeters
20
20
25
Wall strength in mg/am , about
35
35
35
Input voltage in volts
1,000
1,000
1,000
minimum plateau length in volts
160
200
240
Plateau rise in It per 100 volts
Less
than Less
than
Less than
4D
8
5
Dead time in micro-seconds
40 100
160
Zero effect in impulses per minute, about
208 1008
2758
Minimum life term in impulses
10 10
10
co Type Series IC* This series consists of types IC10, IC100, and IC300,
Types IC10 and IC100 can be used for counting weak X-rays and gamma
rays from 20 keT to 3 May and for hard beta rays ovfr 1 MoT. Type
IC300 can be used for weak Z rays and gawa rays frpa 50 NOT to 3 meTo
and in particular for cosmic radiation. The counter tube'is made of
glass with a small potassium content and is provided with an outside
layer cathode (Maze Counter). The filling is self-pztinguishing. The
following table lists the technical data of the ooupter types of this
series$
10 i i 2
Effective volume in cubic oentiaskeis,
about
10
100
300
Total length in millimeters
160
270
475
Largest diameter in millimeters
20
25
40
Wall strength in mg/on?, about
~3
35
140
Input voltage in volts
1,000
1,000
1,000
Minimum plateau length in volts
300
400
400
Plateau rise in % per 100 volts
Less than Les; than
Less than
8
5
3
Dead time in micro-seoond$
Zero effect in impulses per minute, about
70e
200e
6508
Minimum life term in impulses
10
10
10
d. Type Series IIBt This series consists of types II33, 113109 IIB100.
They amt be used for counting X-rays and gamma rays from 50 keT to 3
MeT. The counter tube is made of glass with a small potassium content
and is provided with a copper cathode 0.1 millimeter thick and nickel-
ised by galvanization. The filling is self-extinguishing. The follow-
ing table lists the technical data of the counter types of this serless
IIB3
1810
II 1100
Type
Effective volume in cubic centimeters,
about
3
10
100
Total length in millimeters
115
145
270
Largest diameter in millimeters
20
25
30
Input voltage in volts
1,000
1,000
1,000
minimum plateau length in volts
160
200
240
Plateau rise in 0 per 100 volts
Lose than Less than
Less than
10
4
5
Dead time in secro.seaonds
50
10Q
160
Zero effect-in impulses per minute, about
20
1008
200
Minimum life term in.,ampulses
10
10
10
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-3-
e. Type Series IIC: This series consists of types IIC100 and IIC300.
These types are used for counting hard gamma rays and cosmic rays.
The counter tubes are made of glass with a small potassium content
and are provided with a copper cathode 0.3 millimeters thick which is
nickelized through galvanization. The filling is self-extinguishing.
The following table lists the technical data of the counter types of
this series:
Type
IIC100
110300
Effective volume in cubic omo, about
100
300
Total length in s llimeters
270
475
Largest diameter in millimeters
30
40
Input voltage in volts
1,000
1,000
Minimum plateau length in volts
250
250
Plateau rise in % per 100 volts
Less than
Less than
5
Dead time in micro-seconds
160
200
Zero effect in impulses per minute, about
160
400
Minimum life term in impulses
8
10
8
10
f. ape Series IV: This series consists of the following types: IVA10,
IVC1O and IVE10. They can be used as interference counters for X-rays,
with wave lengths from 1 to 2 angstrom units. The counter tubes are
made of glass with a small potassium content and are provided with a
radiation window. The filling is self-extinguishing. The window ma-
terial of type IVA1O is Lindemann glass, that of IVC10 is silicate glass
and that of IVZ10 is mica. The window diameter is 10 millimeters for
all three types. The following table lists the technical data of the
counter types of this series:
Sffeotivs volume in cubic cm, about
Total length in millimeters
Largest diameter in millimeters
Wall strength in ^g/oa2, about
Input voltage in volts
Minimum plateau length in volts
Plateau rise in % per 100 volts
V~
0~
~
V~
1
10
10
150
165
150
25
25
25
250
20
50
1,000
1,000
1,000
250
250
250
Less than
Less than
Less than
5 5 5
Dead time in micro-seconds 100 100 100
Zero effect in impulses per minute, about 1008 1008 1008
Minimum life term in impulses 10 10 10
3. The appended sketch shows okelun diagrams of tho counter tubes with the
essential dimensions indio4 e n millimeters* "B" is the diagram for types
IA300, IC300 and 110300, "A" is the diagram for all other types mentioned
in this report.
'SIE ctlf'l
"(I F()flt4
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4
Ddaos of Osig.a i ller Coimtsrs
(AU divsneione in millimstere)
68
30
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Approved For Release 2008/06/02 : CIA-RDP80-0081 OA007400620010-4
Approved For Release 2008/06/02 : CIA-RDP80-0081 OA007400620010-4