TY  - JOUR
A1  - Schult, O. W. B.
A1  - Sistemich, K.
A1  - Hardt, Arno
T1  - Plans for investigations of subthreshold K+ production in p+A collisions / O. W. B. Schult [u.a.]
JF  - Nuclear Physics A. Vol. 583
Y1  - 1995
SN  - 1873-1554 (E-journal); 0375-9474 (Print)
SP  - 629
EP  - 632
ER  - 
TY  - JOUR
A1  - Hardt, Arno
A1  - Martin, S.
A1  - Meißburger, J.
A1  - Retz, R.
A1  - Wimmer, J.
T1  - The cryopump system of the QQDDQ magnet spectrometer BIG KARL
JF  - Vacuum
N2  - Cryopumps without liquid nitrogen shielding are used to provide a vacuum of 10−6 torr in the spectrometer. The vacuum system is subdivided in three sections that can be separated by valves.

The first section (scattering chamber) has a volume of 60 l, two rotation transmissions with 35 cm dia and a sliding seal that allows a rotation of 160° without deteriorating the vacuum. The second section includes the vacuum chambers inside the magnets with 6 × 80 cm cross-section and a length of 1200 cm. The third section (detector box) has a volume of 4300 l and contains a moveable detector system. The gas inside the detector with a pressure of 760 torr is separated from the vacuum by a 15 μm mylar foil with an area of 300 cm2. The detector box can be valved off by a valve with the dimension of 10 × 100 cm.

The layout of system is given. The instrumentation and the interlock system are described. First experiences with this system are presented.
Y1  - 1978
U6  - http://dx.doi.org/10.1016/S0042-207X(78)80026-8
SN  - 1879-2715 (E-Journal); 0042-207X (Print)
VL  - 28
IS  - 10-11
SP  - 483
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Martin, Siegfried A.
A1  - Hardt, Arno
A1  - Meissburger, Jürgen
A1  - Berg, Georg P. A.
A1  - Hacker, Ulrich
A1  - Hürlimann, Werner
A1  - Römer, Josef G. M.
A1  - Sagefka, Thomas
A1  - Retz, Adolf
A1  - Schult, Otto W. B.
T1  - The QQDDQ magnet spectrometer “BIG KARL”
JF  - Nuclear instruments and methods in physics research. Vol. 214, iss. 2-3
Y1  - 1983
SN  - 0029-554x (E-Journal); 1872-9606 (E-Journal); 0167-5087 (Print)
SP  - 281
EP  - 303
ER  - 
TY  - JOUR
A1  - Balewski, J.
A1  - Brauksiepe, S.
A1  - Hardt, Arno
T1  - Threshold measurements at the internal experimental facility COSY-11 / J. Balewski [u.a.]
JF  - Nuclear physics A. Vol. 626, iss. 1-2
Y1  - 1997
SN  - 1873-1554 (E-Journal) ; 0375-9474 (Print)
SP  - 85
EP  - 92
ER  -