agata 2 nd prototype detector initial measurements & evaluation andrew boston, matthew dimmock,...
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AGATA2nd Prototype Detector
Initial Measurements & Evaluation
Andrew Boston, Matthew Dimmock, Laura Nelson, Sarah Rigby
• Singles scan results
Overview
• Resolutions – Cologne , Liverpool
- Values quoted are for single LVDS cable & single channel
• Initial coincidence scan results
• Summary
Analogue Digital
Channel Energy(MeV)
Count Rate (kHz / Channel)
FWHM(keV)
FWTM(keV)
FWHM /FWTM
FWHM keV)
Core 1.172 1.10 1.99 3.73 1.87 2.10
Core 1.332 1.10 2.05 3.91 1.91 2.10
A5 1.172 0.45 1.96 3.85 1.96 1.85
A5 1.332 0.45 1.98 3.87 1.95 2.00
A6 1.172 0.45 1.93 3.74 1.94 1.90
A6 1.332 0.45 1.98 3.90 1.97 1.90
D4 0.059 0.28 0.97 1.82 1.88 1.15
D4 0.122 0.28 0.99 1.89 1.91 1.14
E4 0.059 0.28 0.99 1.91 1.93 1.17
E4 0.122 0.28 0.99 1.83 1.85 1.17
C2 1.172 0.46 1.83 3.39 1.85 -
C2 1.332 0.46 1.96 3.54 1.81 -
D2 1.172 0.46 1.79 3.34 1.87 -
D2 1.332 0.46 1.81 3.39 1.87 -
Cologne – Resolution Measurements
Liverpool – Resolution Measurements
Am – 241
Liverpool – Resolution Measurements
Am – 241
• All channels < 1.25keV
Liverpool – Resolution Measurements
Am – 241
• All channels < 1.25keV
• Variation is a function of capacitance
Co – 60
Liverpool – Resolution Measurements
Co – 60
Liverpool – Resolution Measurements
• Most channels < 2.1keV
Co – 60
Liverpool – Resolution Measurements
• Most channels < 2.1keV
• Resolutions improve by ~0.2keV when all LVDS connected
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
500100015002000250030003500400045005000550060006500 • 920MBq Cs-137 source
• 60 sec per position• 1mm steps • 1mm diameter collimator
Cs-137 Singles Fine scan
• Max count rate = 720 cps• Background = 40 cps • 600keV CFD threshold• Accepted triggers = 120 cps • 180GB pre-sorted data
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
0
100
200
300
400
500
600
700
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
050100150200250300350400450500550
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
0
100
200
300
400
500
600
700
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
100
200
300
400
500
600
700
800
900
1000
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
10020030040050060070080090010001100
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1002003004005006007008009001000
Core 662kev – Ring gated
• Increased counts at edges – taper
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 01 52 02 53 03 54 04 55 05 56 06 57 07 58 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 0
4 0
6 0
8 0
1 0 0
1 2 0
1 4 0
1 6 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
020406080100120140160180200220240
Risetimes – Core 662keV
T30 T60 T90
• Fast axis – Lattice orientation
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 01 52 02 53 03 54 04 55 05 56 06 57 07 58 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 0
4 0
6 0
8 0
1 0 0
1 2 0
1 4 0
1 6 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
020406080100120140160180200220240
Risetimes – Core 662keV
T30 T60 T90
• Fast axis – Lattice orientation
<100><010>
<100><010>
<100><010>
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 01 52 02 53 03 54 04 55 05 56 06 57 07 58 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
Core 662keV & Fold 1, Core T30
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 0
4 0
6 0
8 0
1 0 0
1 2 0
1 4 0
1 6 0
1 8 0
2 0 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 0
4 0
6 0
8 0
1 0 0
1 2 0
1 4 0
1 6 0
1 8 0
2 0 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
020406080100120140160180200220240
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
020406080100120140160180200220240260
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
020406080100120140160180200220240
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
020406080100120140160180200220240
Core 662keV & Fold 1, Core T90
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
5
10
15
20
25
30
35
40
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 02 03 04 05 06 07 08 09 01 0 01 1 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 02 03 04 05 06 07 08 09 01 0 01 1 01 2 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
5
1 0
1 5
2 0
2 5
3 0
3 5
4 0
Core 662keV & Fold 1, Segment T30
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 04 06 08 01 0 01 2 01 4 01 6 01 8 02 0 02 2 02 4 02 6 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 04 06 08 01 0 01 2 01 4 01 6 01 8 02 0 02 2 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 04 06 08 01 0 01 2 01 4 01 6 01 8 02 0 02 2 02 4 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
5 0
1 0 0
1 5 0
2 0 0
2 5 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 04 06 08 01 0 01 2 01 4 01 6 01 8 02 0 02 2 02 4 02 6 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 04 06 08 01 0 01 2 01 4 01 6 01 8 02 0 0
Core 662keV & Fold 1, Segment T90
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 01 52 02 53 03 54 04 55 05 56 06 57 07 5
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 01 52 02 53 03 54 04 55 05 56 06 57 07 5
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
Core 662keV & Energy confined to ring, Core T30
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 04 06 08 01 0 01 2 01 4 01 6 01 8 02 0 02 2 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 0
4 0
6 0
8 0
1 0 0
1 2 0
1 4 0
1 6 0
1 8 0
2 0 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 04 06 08 01 0 01 2 01 4 01 6 01 8 02 0 02 2 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 04 06 08 01 0 01 2 01 4 01 6 01 8 02 0 02 2 02 4 02 6 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 04 06 08 01 0 01 2 01 4 01 6 01 8 02 0 02 2 02 4 02 6 02 8 0
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
2 04 06 08 01 0 01 2 01 4 01 6 01 8 02 0 02 2 02 4 0
Core 662keV & Energy confined to ring, Core T90
Collimation gap centred on (w.r.t. crystal base):
2mm
13.5mm
29mm
48mm
65mm
83.7mm
Physical segmentation depth:
0mm
21mm
36mm
72mm
54mm
90mm
8mm
Coincidence Setup
Div = 1.5mm
Div = 2.1mm
0.00
20.00
40.00
60.00
80.00
100.00
120.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
F1(Banks1&2) F2(Banks4&5) F3(Banks7&8)
F4(banks9&10) F5(Banks9&10) F6(Banks11&12)
Initial scan – Counts per hour
0.00
20.00
40.00
60.00
80.00
100.00
120.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
F1(Banks1&2) F2(Banks4&5) F3(Banks7&8)
F4(banks9&10) F5(Banks9&10) F6(Banks11&12)
Initial scan – Counts per hour
1.4mm
2.8mm
0.00
20.00
40.00
60.00
80.00
100.00
120.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
F1(Banks1&2) F2(Banks4&5) F3(Banks7&8)
F4(banks9&10) F5(Banks9&10) F6(Banks11&12)
Initial scan – Counts per hour
1.4mm
2.8mm
Summary
• Ongoing off-line singles analysis
• Corrected scan setup following initial
coincidence scan line
• Currently running radial scan across y-axis
(4mm steps)
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
100
200
300
400
500
600
700
800
900
1000
X(mm) Y(mm) Time(s) Time(h)72.0 29.0 5400 1.5072.0 33.0 5400 1.5072.0 37.0 7124 1.9872.0 41.0 11403 3.1772.0 45.0 17555 4.8872.0 49.0 23436 6.5172.0 53.0 26903 7.4772.0 57.0 27000 7.5072.0 61.0 27000 7.5072.0 65.0 27000 7.5072.0 71.0 27000 7.5072.0 75.0 27000 7.5072.0 79.0 27000 7.5072.0 83.0 27000 7.5072.0 87.0 26900 7.4772.0 91.0 23436 6.5172.0 95.0 17555 4.8872.0 99.0 11403 3.1772.0 103.0 7123 1.9872.0 107.0 5400 1.5072.0 111.0 5400 1.50
106.51
3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 03 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
100
200
300
400
500
600
700
800
900
1000
Radial scan across y-axis (4mm steps)
Summary
• Ongoing off-line singles analysis
• Corrected scan setup following initial
coincidence scan line
• Currently running radial scan across y-axis
(4mm steps)
HELP !!!!!!!!3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 1 1 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
100
200
300
400
500
600
700
800
900
1000
Initial Proposal: Current Plans:
Hexagonal or Cubic Grid?
Coincidence Grid
Initial Proposal: Current Plans:
Hexagonal or Cubic Grid?
Coincidence Grid
Equidistant points ???