Home » PANDA » PandaRoot » EMC » forward endcap quest goes on
 forward endcap quest goes on [message #8616] |
Fri, 22 May 2009 14:56  |
Irina Brodski
Messages: 8
Registered: October 2008
|
occasional visitor |
From: *physik.uni-giessen.de
|
|
Dear all,
i have a problem with the endcap again. It is a shift of 2 quarters of the endcap by a distance of few cm in z direction. It only apears for the positions of clusters and not for hits or digis, also i can not see it in the sim_emc.root.
the following pictures are from a simulation of photons (1GeV, 0<theta<25°, 0<phi<360°, geant4, pandaroot_trunk, standart macros from pandaroot/macro/emc) can anyone explain this?
Thank you for your help in advance,
Irina
[Updated on: Fri, 22 May 2009 15:01] Report message to a moderator |
|
|
|
|
|
|
|
|
|
|
|
| Re: forward endcap quest goes on [message #8839 is a reply to message #8682] |
Wed, 10 June 2009 16:58  |
Aleksandra Biegun
Messages: 64
Registered: May 2007
Location: Groningen
|
continuous participant |
From: *KVI.nl
|
|
Dear Irina, dear All,
last time few checks for the forward endcap emc have been done
to find the source of the problem with 2 different Z-positions
for 2 diagonal quarters of the endcap
and it seems that, finally, it is found.
To solve that problem I need a bit of time.
Since the collaboration meeting is very soon
and I am busy with the analysis, I will correct it afterwards.
Best regards,
Ola.
Aleksandra Biegun
University of Groningen/KVI
Zernikelaan 25, 9747 AA Groningen
tel. +31 50 363 3630
fax. +31 50 363 4003
|
|
|
|
|
|
| Re: forward endcap quest goes on [message #8939 is a reply to message #8616] |
Thu, 02 July 2009 15:57 |
Aleksandra Biegun
Messages: 64
Registered: May 2007
Location: Groningen
|
continuous participant |
From: *KVI.nl
|
|
Hi Irina, hi All,
the problem Irina has had with the forward endcap
with GEANT 4 is fixed now.
Somehow, the single Reflection() I have made
for Quarter number 2 and 4 caused the problem with the Z shift.
So, I have changed the macro which creates the geometry
of the forward endcap (FwEndCap) and now it is called:
createRootGeoFileFwEnd_fixed.C.
It does not have Reftection() function.
It is committed to svn to:
../trunk/macros/emc/
and creates the root file with the same name like was before,
i.e. emc_module3new.root
(also commited to svn),
so you don't need to do any changes,
just do svn update.
I also had to change a little bit
../trunk/emc/EmcTools/PndEmcStructure.cxx.
I put the same plots made twice:
for GEANT 4 and, to compare, for GEANT 3.
At the plots:
z_ene_hits_digi_clusters_g[GEANT]_fwendcap_m3changed_fixed.png
you can see that Z-position for all 4 Quarters of the FwEndCap
is in the same Z for GEANT 4. For GEANT 3 it was fine before.
The mapping is also fine, should be the straight line
in each Quarter (each copy), what you can see at plots:
xpad_x_points_m3_g4_fixed.png - for X direction
ypad_y_points_m3_g4_fixed.png - for Y direction
Quarters of the FwEndCap are placed in the clockwise direction looking downstream.
Different parameters for Points, also Z-position of all 4 Qarters, are shown at plots:
points_g4_fwendcap_m3changed_fixed.png - for GEANT 4
points_g3_fwendcap_m3changed_fixed.png - for GEANT 3.
Irina, please check it.
I do hope there will not be any problem, but in case of any,
let me know.
If you have any question, do not hesitate to ask.
Best regards,
Ola.
Aleksandra Biegun
University of Groningen/KVI
Zernikelaan 25, 9747 AA Groningen
tel. +31 50 363 3630
fax. +31 50 363 4003
|
|
|
|
|
|
|
|
| Re: forward endcap quest goes on [message #8961 is a reply to message #8959] |
Thu, 09 July 2009 11:22 |
Aleksandra Biegun
Messages: 64
Registered: May 2007
Location: Groningen
|
continuous participant |
From: *KVI.nl
|
|
Hi,
I have made plots for theta and phi difference for clusters
in the forward end-cap, for GEANT 3 and GEANT 4.
They are comparable.
I will send to svn the macro I am using for making these plots.
Best regards,
Ola.
Aleksandra Biegun
University of Groningen/KVI
Zernikelaan 25, 9747 AA Groningen
tel. +31 50 363 3630
fax. +31 50 363 4003
|
|
|
|
|
|
| Re: forward endcap quest goes on [message #8963 is a reply to message #8962] |
Thu, 09 July 2009 15:43 |
Aleksandra Biegun
Messages: 64
Registered: May 2007
Location: Groningen
|
continuous participant |
From: *KVI.nl
|
|
Hi,
indeed, one can observe the shift of about 0.155 degree
and 0.144 degree, for GEANT 3 and GEANT 4, respectively.
In fact, there is a shift, but it is very small.
Besides, I added to ../trunk/macro/emc/
2 macros I used to obtain plots I posted last days.
Names are:
anal_point_fwendcap.C
anal_hit_digi_cluster_fwendcap.C
Regards,
Ola.
Aleksandra Biegun
University of Groningen/KVI
Zernikelaan 25, 9747 AA Groningen
tel. +31 50 363 3630
fax. +31 50 363 4003
|
|
|
|
Goto Forum:
Current Time: Tue Apr 30 09:10:20 CEST 2024
Total time taken to generate the page: 0.00760 seconds
|
GSI Forum
Search
Help
Members
Login
Home
