1. ELJEN TECHNOLOGY SCINTILLATOR AND GLUE
NEW CELLS RESPONSES
ALEXANDRE DYCHKANT, PETER TORRES
11/26/2018
ELJEN TECHNOLOGY SCINTILLATOR AND GLUE

2. ELJEN TECHNOLOGY SCINTILLATOR AND GLUE
GEOMETRY OF CELLS
3MM (3.28) EJ-200 REGULAR HEXAGON
4MM (3.80) EJ-200 REGULAR HEXAGON
5MM (5.51) EJ-200 REGULAR HEXAGON
3MM EJ-200 REGULAR HEXAGON 6CM²
5MM EJ-200 SQUARE 6CM²
5MM EJ-200 SQUARE 9CM²
5MM (4.85) EXTRUDED REGULAR HEXAGON
11/26/2018
ELJEN TECHNOLOGY SCINTILLATOR AND GLUE

3. ELJEN TECHNOLOGY SCINTILLATOR AND GLUE
SQUARE, 0.8 MM SIDE, 1 M LONG BCF92 WLS FIBERS WITH MIRRORED END
WERE GLUED INSIDE THE SIGMA SHAPE TAPERED GROOVE USING EJ-200 OPTICAL
GLUE
2 mC Sr90 RADIOACTIVE SOURCE AND HAMAMATSU PMT R580 WERE USED
11/26/2018
ELJEN TECHNOLOGY SCINTILLATOR AND GLUE

4. ELJEN TECHNOLOGY SCINTILLATOR AND GLUE
VERY PRELIMINARY
RESPONSE OF CELLS MADE FROM ELJEN TECHNOLOGY SCINTILLATOR
3 mm
4 mm
5 mm
5/6 cm
Sq 5/6
Sq 5/9
Ext 5
Com
Bef glu
478.1
491.9
515.3
454.3
502.2
409.1
330.5
Glu tyvek
Glu paint
Glu **
11/26/2018
ELJEN TECHNOLOGY SCINTILLATOR AND GLUE

5. ELJEN TECHNOLOGY SCINTILLATOR AND GLUE
RATIO OF RESPONSES AFTER/BEFOR GLUING
3 mm
4 mm
5 mm
5/6 cm
Sq 6/5
Sq 9/5
Ext 5
1.04
0.95
1.05
1.14
1.12
1.16
1.06
1.35
1.08
1.07
1.24
1.13
1.30
1.29
1.58
1.41
1.26
1.20
1.44
1.37
1.27
1.39
1.10
1.03
1.00
0.91
1.09
1.19
1.51
1.32
1.49
0.77
1.36
1.40
0.75
0.88
1.18
1.21
1.02
11/26/2018
ELJEN TECHNOLOGY SCINTILLATOR AND GLUE

6. ELJEN TECHNOLOGY SCINTILLATOR AND GLUE
COMENTS…
THERE WERE EIGHT FIBERS WHICH WERE REPLACED BEFOR GLUING BECAUSE OF
MULTIPLE CRACKS
THE RED NUMBERS IN THE TABLE ARE THE CELLS, WHICH HAVE FIBERS WITH CRACKS;
THE VISUAL INSPECTION WITH RED LASER CONFIRMED THIS,
ACTUALLY ONLY BLUE NUMBERS IN THE TABLE PROVIDE THE NORMAL RESPONSES,
HEXAGONAL SHAPED, 5 MM THICKNESS, AND 9.4 CM² AREA CELL HAS THE BEST RESPONSE
THE VERY WIDE SPREADE OF RESPONSES IS THE RESULTE OF MULTIPLE CRACKS OF
FIBER CLADING AND MAYBE OPTICAL GLUE.
11/26/2018
ELJEN TECHNOLOGY SCINTILLATOR AND GLUE

7. ELJEN TECHNOLOGY SCINTILLATOR AND GLUE
BICRON GLUE BC-600 VS ELJEN EJ-500
EIGHT SQUARE CELLS WITH 9.4 CM² AREA AND DIAGONAL HOLL WERE
MADE FROM 5 MM THIKNESS NICADD EXTRUDED SCINTILLATOR,
0.94 MM OUTER DIAMETER, 57 CM LONG KURARAY Y-11 WLS FIBERS
WITH MIRRORED END WERE GLUED INSIDE THE CELL’S HOLL,
IT WAS TWO SETS OF FOUR CELLS FOR EACH TYPE OF OPTICAL GLUE,
RADIOACTIVE SOURCE Sr90 AND HAMAMATSU PMT R580 WERE USED,
THE ARERAGE RESPONSE FOR BC-600 WAS nA,
THE ARERAGE RESPONSE FOR EJ-500 WAS Na,
EJ-500 PROVIDED THE SAME RESPONSE AS BC-600, BUT LESS COST.
11/26/2018
ELJEN TECHNOLOGY SCINTILLATOR AND GLUE