Latest revision as of 19:00, 3 July 2018

Creating Lead Cylinder

For a lead cylinder with outer radius of 60mm, to ensure Moller electrons can clear the material:

Since the Geant4 solid is based on it's half-distance with respect to the origin, we need to add 6000 to this to find the starting distance.

Geometry files follow the format:

Name: No Spaces
Mother: root if primary component
Description: Short explaination
Position: The center of the object wrt to the vertex
Rotation:0*deg 0*deg 0*deg
Type: G4 Tube
Dimensions: Inner Radius, Outer Radius, Half-Length in z, starting phi position angle of segment ,delta phi angle of segment
Material: Defined in materials file
Color:The color entry is a 6 digit hexadecimal number that represents Red, Green and Blue weights from 0 to 255 each in the form: RRGGBB
Visible: 1=Yes, 0=No
Style:1=Solid,0=Wireframe

Geometry File

File:PbCylinder geometry basic.txt

Material File

File:PbCylinder materials basic.txt

Modified gcard line

       <detector name="/home/lds/src/CLAS/GEMC/clas12Tags/4a.2.2/experiments/clas12/PbCylinder/PbCylinder"          factory="TEXT" variation="basic"/>

Gemc Visual

Trial Run

~/src/CLAS/GEMC/clas12Tags/4a.2.2/source/gemc -USE_GUI=1 -BEAM_P="e-, 11.0*GeV, 5.0*deg, 10*deg" -BEAM_V="(0, 0, 0)cm" -N=1 eg12.gcard

No Solenoid, No/0 Torus

No Solenoid, 0 Torus

1 Sol, 0 Tor

Modified Rates

Compare With/Without TEMP shield

Comparing Effects of TEMP Shield on Detected Events in DC
Solenoid Field	With Temp Shield		Without Temp Shield
	Vacuum	Air	Vacuum	Air
No Sol	C	D	E	F
0.5 Sol	C	D	E	F
1.0 Sol	C	D	E	F

@@ Line 1: / Line 1: @@
 =Creating Lead Cylinder=
+For a lead cylinder with outer radius of 60mm, to ensure Moller electrons can clear the material:
+[[File:TEMPshieldDimension.png|thumbnail |border | center]]
+<center><math>tan\ \theta=\frac{60\ mm}{d} \Rightarrow d=\frac{60\ mm}{tan\ 5 \circ} \approx 685\ mm</math></center>
+Since the Geant4 solid is based on it's half-distance with respect to the origin, we need to add 6000 to this to find the starting distance.
 Geometry files follow the format:
 <pre>
@@ Line 8: / Line 23: @@
 Rotation:0*deg 0*deg 0*deg
 Type: G4 Tube
-Dimensions: Inner Radius, Outer Radius, Length in z, starting phi position angle of segment ,delta phi angle of segment
+Dimensions: Inner Radius, Outer Radius, Half-Length in z, starting phi position angle of segment ,delta phi angle of segment
 Material: Defined in materials file
 Color:The color entry is a 6 digit hexadecimal number that represents Red, Green and Blue weights from 0 to 255 each in the form: RRGGBB
@@ Line 37: / Line 52: @@
 ~/src/CLAS/GEMC/clas12Tags/4a.2.2/source/gemc -USE_GUI=1 -BEAM_P="e-, 11.0*GeV, 5.0*deg, 10*deg" -BEAM_V="(0, 0, 0)cm" -N=1 eg12.gcard
 </pre>
+No Solenoid, No/0 Torus
+[[File:TESTshieldNOSol0Tor.png]]
+No Solenoid, 0 Torus
+[[File:TESTshieldNOSolTrue0Tor.png]]
+Sol, 0 Tor
+[[File:TESTshield1Sol0Tor.png]]
+=Modified Rates=
+=Compare With/Without TEMP shield=
+{| class="wikitable"
+  |+ Comparing Effects of TEMP Shield on Detected Events in DC
+|-
+  ! Solenoid Field
+  ! colspan="2" | With Temp Shield
+  ! colspan="2" | Without Temp Shield
+|-
+  |
+  ! Vacuum
+  ! Air
+  ! Vacuum
+  ! Air
+|-
+  ! No Sol
+  | C
+  | D
+  | E
+  | F
+|-
+  ! 0.5 Sol
+  | C
+  | D
+  | E
+  | F
+|-
+  ! 1.0 Sol
+  | C
+  | D
+  | E
+  | F
+|}

Difference between revisions of "Pb Cylinder (AKA "Temp Shield")"