(7/21/03)
The proposed target list for MIPP E907 from March 14, 2003 is here.
Jerry Peterson, U of Colorado, jerry.peterson@colorado.edu
Criteria: spherical nuclei, with no more than two dominant isotopes, spaced evenly
in logA, the samples chosen for other high energy reaction studies.
All save the CD2 and its matching C and CH2 are 2 inches or 50 mm in diameter.
|
Material
|
Mass
(g)
|
Thickness
|
Areal Density
(g/cm2)
|
Interaction Length
(%)
|
Radiation Length
(%)
|
Notes
|
|
(inches)
|
(cm)
|
|---|
|
CH2 #1
|
14.9
|
0.311"
|
0.790
|
0.735
|
0.938
|
|
|
|
CH2 #2
|
28.2
|
0.590"
|
1.500
|
1.391
|
1.77
|
|
|
|
CH2 #31
|
25.9
|
|
|
0.574
|
0.73
|
|
3 inch diameter
|
|
CH2 #32
|
49.2
|
|
|
1.092
|
1.39
|
|
3 inch diameter
|
|
CH2 #33
|
26.5
|
|
|
0.513
|
0.65
|
|
3 inch diameter
|
|
CD2 #1
|
4.53
|
|
0.102
|
0.103
|
0.13
|
|
3 inch diameter
|
|
CD2 #2
|
9.11
|
|
0.191
|
0.207
|
0.26
|
|
3 inch diameter
|
|
CD2 #3
|
18.2
|
|
0.391
|
0.414
|
0.52
|
|
3 inch diameter
|
|
CD2 #4
|
30.7
|
|
0.653
|
0.696
|
0.89
|
|
3 inch diameter
|
|
Be #1
|
14.4
|
0.157"
|
0.399
|
0.710
|
0.94
|
1.1
|
|
|
Be #2
|
14.5
|
0.157"
|
0.399
|
0.715
|
0.95
|
1.1
|
|
|
Be #3
|
-
|
0.016"
|
0.041
|
0.075
|
0.10
|
0.1
|
(in Al frame)
|
|
C #31
|
168.7
|
|
|
3.44
|
3.98
|
8.05
|
3 inch diameter
|
|
C #32
|
84.7
|
|
|
1.72
|
1.99
|
4.0
|
3 inch diameter
|
|
C #34
|
60.0
|
|
|
1.316
|
1.52
|
3.1
|
3 inch diameter
|
|
C #1
|
10.0
|
0.118"
|
0.300
|
0.493
|
0.57
|
1.15
|
|
|
C #2
|
16.6
|
0.196"
|
0.498
|
0.819
|
0.94
|
1.9
|
|
|
C #3
|
34.0
|
0.395"
|
1.003
|
1.677
|
1.94
|
3.9
|
|
|
Melamine
|
16.5
|
0.223"
|
0.566
|
0.814
|
1.12
|
|
C3H6N7
|
|
Al2O3
|
38.3
|
0.238
|
0.6045
|
1.890
|
1.9
|
6.2
|
oxygen sample
|
|
Al
|
21.4
|
0.157"
|
0.399
|
1.056
|
0.992
|
4.4
|
|
|
Cu
|
26.6
|
0.060"
|
0.152
|
1.312
|
0.973
|
10.2
|
|
|
Ag #1
|
28.1
|
0.052"
|
0.132
|
1.386
|
1.4
|
13.9
|
|
|
Ag #2
|
34.5
|
|
|
1.702
|
1.75
|
17
|
|
|
Bi #1
|
34.25
|
|
|
1.690
|
0.87
|
27
|
|
All 3" targets are in the wooden case in NPL Room 219.
(4/3/03)
The University of Colorado at Boulder is responsible for the target wheel. The UC Engineer Eric Erdos sent the drawing of the system
holding the MIPP target wheel in place in the TPC
alcove. It was built in the UC shop, taken to Femrilab
unassembled.
(other formats: .dwg,
.dxf, .eps,
.pdf)
The basic idea is to hook a flange on the bolt circle at the
upstream face of the vertical optical bench, holding 2 rods poking
downstream to a plate. The rods are straight along z. The filter
wheel mechanism is glued to this plate. The wheel will not be
centered on the beam, since the target holes are off-axis.
The wheel is turned by an Acnet controlled motor mounted to the
TPC table upstream of the TPC, outside the magnetic field of the JGG.
The device is F:TGTWHL.