5.6 CsI-Crystal Data Base
The parameters of 26 crystals, which were assembled for the 1994 test
measurements are displayed in table 5.5. The column named crystal
position refers to the position of the crystal in the array (Fig. 5.11).
The numbers for Fast/Total are obtained as described in section 5.2. The
entry DIM reflects the mechanical property of the crystal and is defined in
equation 5.5. The N.PE./MeV (numbers of photoelectrons per MeV) are the
result of the method explained in section 5.4. The italic numbers in this
column are assumed since these modules were returned to the manufacturer
because of low F/T-value or unacceptable mechanical dimensions[14]. Once finally determined, the parameters on light
non-uniformity of the individual crystals will be included in the database.
PSI
Serial
|
Crystal
Position
|
Type
|
Manufact.
|
Fast
/ Total
|
Dim
|
N.PE./
MeV
|
Accept.
|
S002
|
C16
|
PENT
|
Bicron
|
0.919
|
0.00
|
116
|
YES
|
S011
|
C14
|
HEXA
|
Bicron
|
0.827
|
0.00
|
94
|
YES
|
S012
|
C9
|
HEXA
|
Bicron
|
0.796
|
0.00
|
72
|
YES
|
S013
|
C22
|
HEXA
|
Bicron
|
0.826
|
0.97
|
63
|
YES
|
S014
|
C17
|
HEXA
|
Bicron
|
0.808
|
0.00
|
87
|
YES
|
S015
|
C15
|
HEXA
|
Charkov
|
<0.6
|
5.05
|
40
|
NO
|
S016
|
C24
|
HEXA
|
Charkov
|
<0.6
|
1.20
|
40
|
NO
|
S018
|
C23
|
HEXA
|
Charkov
|
<0.6
|
0.00
|
40
|
NO
|
S061
|
C8
|
HEXB
|
Bicron
|
0.900
|
0.00
|
84
|
YES
|
S062
|
C10
|
HEXB
|
Bicron
|
0.803
|
0.55
|
83
|
YES
|
S063
|
C18
|
HEXB
|
Charkov
|
<0.6
|
0.00
|
40
|
NO
|
S111
|
C25
|
HEXC
|
Bicron
|
0.812
|
0.00
|
104
|
YES
|
S112
|
C6
|
HEXC
|
Bicron
|
0.769
|
0.87
|
69
|
YES
|
S113
|
C7
|
HEXC
|
Bicron
|
0.684
|
0.00
|
57
|
YES
|
S114
|
C3
|
HEXC
|
Bicron
|
0.802
|
0.00
|
81
|
YES
|
S115
|
C12
|
HEXC
|
Bicron
|
0.810
|
0.00
|
68
|
YES
|
S116
|
C11
|
HEXC
|
Bicron
|
0.851
|
0.00
|
43
|
YES
|
S117
|
C21
|
HEXC
|
Bicron
|
0.814
|
0.00
|
74
|
YES
|
S161
|
C1
|
HEXD
|
Bicron
|
0.836
|
0.09
|
68
|
YES
|
S162
|
C13
|
HEXD
|
Bicron
|
0.847
|
0.00
|
61
|
YES
|
S163
|
C26
|
HEXD
|
Bicron
|
0.877
|
0.10
|
77
|
YES
|
S164
|
C5
|
HEXD
|
Bicron
|
0.872
|
0.00
|
82
|
YES
|
S165
|
C20
|
HEXD
|
Bicron
|
0.881
|
0.00
|
89
|
YES
|
S166
|
C19
|
HEXD
|
Bicron
|
0.863
|
0.00
|
79
|
YES
|
S202
|
C4
|
HD1
|
Bicron
|
0.902
|
2.42
|
67
|
YES
|
S211
|
C2
|
HD2
|
Charkov
|
<0.6
|
0.00
|
40
|
NO
|
Table
5.5:
Parameters for the 26 crystals used during the 1994 test beam time.
[14] These were some of the first crystals
obtained from Charkov (Ukraine). The quality of the crystals from this
manufacturer has improved and currently about 90% of the delivered crystals do
meet the specified F/T ratio.