GSI Forum: EMC » Geometry of EMC Barrel Crystal

Home » PANDA » PandaRoot » EMC » Geometry of EMC Barrel Crystal

Show: Today's Messages :: Polls :: Message Navigator

Re: Geometry of EMC Barrel Crystal [message #9415 is a reply to message #9414]

Fri, 18 September 2009 14:13

Christian Hammann
Messages: 24
Registered: July 2009
Location: Bonn

continuous participant

From: *cb.uni-bonn.de

I was looking at crystal 5 in row 1 copy 1 of module 2 which should be a type 1 crystal.
These are the coordinates obtained by doing an inspect node on the root geometry created by the simulation:

Front face:
point #0 : x= -1.64783 y= -1.25634 z= -9.99926
point #1 : x= -1.64783 y= 0.88266 z= -9.99926
point #2 : x= 0.49055 y= 0.88266 z= -9.99926
point #3 : x= 0.49055 y= -1.25634 z= -9.99926

Rear face:
point #4 : x= -0.88418 y= -1.25633 z= 9.99926
point #5 : x= -0.88418 y= 1.63001 z= 9.99926
point #6 : x= 2.04146 y= 1.63001 z= 9.99926
point #7 : x= 2.04146 y= -1.25633 z= 9.99926

This gives a frontface of 21.4 by 21.4 mm which is about 1mm smaller than it is in the TDR. Also it should not be quadratic, (not even rectangular) according to the TDR.

The backface has a size 29.2mm by 28.9mm which more or less agrees with the TDR but it should also not be rectangular.

From the TDR I expected that 2 of the sides have a right angle with the front- and backface, also the TDR is not very clear about this. This is not true with the coordinates given above, there only 1 side has right angles with the frontface.

I have attached a view of the crystal from the simulation.
index.php?t=getfile&id=5638&private=0

Regards

Christian

Attachment: m1r1c5.gif
(Size: 12.38KB, Downloaded 1284 times)

Christian Hammann
Universität Bonn
Helmholz-Institut für Strahlen und Kernphysik
Nußallee 14-16
53115 Bonn
Tel: +49 228 733895
Fax: +49 228 732505

Report message to a moderator

[Message index]

		Geometry of EMC Barrel Crystal By: Christian Hammann on Fri, 18 September 2009 12:43
		Re: Geometry of EMC Barrel Crystal By: StefanoSpataro on Fri, 18 September 2009 13:42
		Re: Geometry of EMC Barrel Crystal By: Christian Hammann on Fri, 18 September 2009 14:13
		Re: Geometry of EMC Barrel Crystal By: StefanoSpataro on Fri, 18 September 2009 14:58
		Re: Geometry of EMC Barrel Crystal By: Christian Hammann on Fri, 18 September 2009 15:12
		Re: Geometry of EMC Barrel Crystal By: Philippe Rosier on Tue, 06 October 2009 08:48

Previous Topic:	New EmcMapper
Next Topic:	Geant3 tracking cuts for the EMC

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Tue Aug 18 02:08:20 CEST 2026

Total time taken to generate the page: 0.00702 seconds