The NIMROD multi
detector a new 4pi array of detectors build at Texas A&M to study reactions
mechanisms in heavy ion reactions. The charged particle detectors
are composed of Ionization Chambers, silicon telescopes and CsI(Tl) scintillators
covering angles between 3 and 170 degrees.
These charged particle detectors are placed in a cavity inside the
revamped TAMU neutron ball.
The charged particle detector setup
is composed of:
To minimize cost of the
detector, the INDRA geometry
was adopted in the forward direction. This reduced significantly
the cost of the silicon detectors since no mask had to be fabricated.
The forward rings of detectors thus covers polar angles from 3.6 to 45
degrees in 8 concentric rings of 12 CsI(Tl) detector each. This arrangement
will complete the already existing TAMU CsI Ball array which is used almost
"as is" from 45-170 degrees.
6 rings of 12 detectors between 3 and 35 degrees.
2 rings of 24 detectors between 30 and 45 degrees
2 rings of 16 detectors between 45 and 100 degrees.
2 rings of 8 detectors between 100 and 140 degrees.
20 Silicon Telescopes:
2 (150 + 500 microns) (Super Telescopes)
1 150 microns
2 300 microns
Placed in front of 10 CsI scintillators in each
96 Ionization chambers
Mixed Source (228Th, 244Cm,
241Am, 239Pu, 148Ge) Spectrum
of Silicon Detector datasheets
of Pictures Taken 26-Aug-1999
of Pictures Taken 19-Aug-1999
of Pictures Taken 26-April-1999
Taken From Various Test Runs
of Original Prototypes