Difference between revisions of "Chopper Parameters"

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These have following parameters:  
 
These have following parameters:  
−
(1)    MERLIN FERMI chopper
 
  
−
Radius of curvature =1.3 meter=1300mm
+
{| class="wikitable" style="color:blue;
 +
| Chopper
 +
| Curvature Radius (mm)
 +
| Slit width (mm)
 +
| Absorber Thickness (mm)
 +
| Total Package Thickness (mm)
 +
|-
 +
| Fermi:
 +
| 1300
 +
| 2.30
 +
| 0.55
 +
| 98.
 +
|-
 +
| Gd:
 +
| Inf
 +
| 0.2
 +
| 0.02
 +
| 10.
 +
|}
  
−
Width of slits is 2.30 mm
+
== LET Choppers ==
  
−
Absorber thickness is 0.55 mm
+
These have following parameters:
  
−
Total thickness of package is 98mm
+
{| class="wikitable" style="color:blue;
−
 
+
| Chopper
−
+
| Radius (mm)
−
 
+
| Slot width (mm)
−
(2)   MERLIN-Gd  chopper
+
| Guide width (mm)
−
 
+
| Number of slots
−
Radius of curvature =infinity
+
| Number of Disks
−
 
+
| Distance (m)
−
Width of slits is  0.2 mm
+
|-
−
 
+
| Disk 1
−
Gd-Absorber thickness is 20 micro-meter=0.02mm
+
| 290
−
 
+
| 40
−
Total thickness of package is 10mm
+
| 40
 +
| 6
 +
| 2
 +
| 7.83
 +
|-
 +
| Disk 2  
 +
| 545
 +
| 890
 +
| 40
 +
| 1
 +
| 1
 +
| 8.4
 +
|-
 +
| Disk 3
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
| N/A
 +
|-
 +
| Disk 4
 +
| 290
 +
| 52
 +
| 40
 +
| 6
 +
| 1
 +
| 15.66
 +
|-
 +
| Disk 5
 +
| 290
 +
| 10
 +
| 10
 +
| 2
 +
| 2
 +
| 23.5
 +
|-
 +
|}

Latest revision as of 13:05, 23 May 2016

MARI Choppers

MARI uses range of Fermi choppers with the following parameters: 

 Length of slits: 100mm
 Slats: Boron fibre reinforced resin
 Slits: Hollow aluminium frame

Other parameters:

Chopper Curvature Radius (mm) Slit width (mm) Slat width (mm)
Chopper A (500mEv): 1300 0.76 0.55
Chopper B (200mEv): 820 1.14 0.55
Chopper С (100mEv): 580 1.52 0.55
Chopper В (50mEv): 410 1.52 0.55
Chopper S (Sloppy): 1300 2.28 0.55

MERLIN Choppers

These have following parameters:

Chopper Curvature Radius (mm) Slit width (mm) Absorber Thickness (mm) Total Package Thickness (mm)
Fermi: 1300 2.30 0.55 98.
Gd: Inf 0.2 0.02 10.

LET Choppers

These have following parameters:

Chopper Radius (mm) Slot width (mm) Guide width (mm) Number of slots Number of Disks Distance (m)
Disk 1 290 40 40 6 2 7.83
Disk 2 545 890 40 1 1 8.4
Disk 3 N/A N/A N/A N/A N/A N/A
Disk 4 290 52 40 6 1 15.66
Disk 5 290 10 10 2 2 23.5
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