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StiScan for SST

Updated on Thu, 2014-08-14 12:11. Originally created by bouchet on 2014-06-29 10:22.
note : work in progress ...
using StiScan tool, I looked at the implementation of inactive material for the SSD (some details in this HFT soft meeting) 
1) Eloss for SFSM volume (support ladder)

2) Eloss for SFDM volume (wafer)

comments
  1. inactive material distribution for SFSM (ladder) looks okay
  2. inactive material distribution for SFDM (wafer) is located ~0 (therefore wrong) ; the reason is because these volumes are local to a wafer
SFLM is the ladder volume (SFDM is the assembly)
SFSW has 6 daughters ( = wafer), each daughter has 15 volume
root.exe [12] dyson->cd("HALL_1/CAVE_1/TpcRefSys_1/IDSM_1/SFMO_1/SFLM_1/SFDM_1/SFSW_1")
root.exe [13] node->GetNdaughters()
(const Int_t)16
root.exe [14] TGeoNode *node = dyson->GetCurrentNode()
root.exe [15] node->GetNdaughters()
(const Int_t)25

SFSM has only 25 daughters
root.exe [1] dyson->cd("HALL_1/CAVE_1/TpcRefSys_1/IDSM_1/SFMO_1/SFLM_1/SFSM_1")
root.exe [2] TGeoNode *node = dyson->GetCurrentNode()
root.exe [3] node->GetNdaughters()
(const Int_t)497

### update : 20140807 ###
SSD geometry tree

a) ladder volume [full] : SFLM --> daughters :
 
 root.exe [10] dyson->cd("HALL_1/CAVE_1/TpcRefSys_1/IDSM_1/SFMO_1/SFLM_1")
 daughter 0 : SFDM_1
 daughter 1 : SFSM_1
--> 2 daughters


b) ladder volume [sensor] SFDM/SFSW --> daughters
root.exe [19] dyson->cd("HALL_1/CAVE_1/TpcRefSys_1/IDSM_1/SFMO_1/SFLM_1/SFDM_1/SFSW_1")
root.exe [21] for(int ii=0;ii<node->GetNdaughters();++ii){cout <<" daughter " << ii <<" : " << node->GetDaughter(ii)->GetName() << endl;}
 daughter 0 : SFSL_1
 daughter 1 : SFRA_1
 daughter 2 : SFRA_2
 daughter 3 : SFRS_1
 daughter 4 : SFRS_2
 daughter 5 : SFRS_3
 daughter 6 : SFRS_4
 daughter 7 : SFFX_1
 daughter 8 : SFFX_2
 daughter 9 : SFPI_1
 daughter 10 : SFPI_2
 daughter 11 : SFPI_3
 daughter 12 : SFPI_4
 daughter 13 : SFAA_1
 daughter 14 : SFAA_2
 daughter 15 : SFAA_3
 daughter 16 : SFAA_4
 daughter 17 : SFAA_5
 daughter 18 : SFAA_6
 daughter 19 : SFAA_7
 daughter 20 : SFAA_8
 daughter 21 : SFAA_9
 daughter 22 : SFAA_10
 daughter 23 : SFAA_11
 daughter 24 : SFAA_12
--> 25 daughters


c) ladder volume [support] SFSM --> daughters
 root.exe [18] for(int ii=0;ii<node->GetNdaughters();++ii){cout <<" daughter " << ii <<" : " << node->GetDaughter(ii)->GetName() << endl;}
 daughter 0 : SFLT_1
 daughter 1 : SFLT_2
 daughter 2 : SFLU_1
 (...)
 daughter 494 : SFES_16
 daughter 495 : SFEB_15
 daughter 496 : SFEB_16
--> 497 daughters


However, 87% of these volumes are kapton cables (volume SFLA, SFLB and SFLC) which have a thichness of 0.0070cm [70 microns]
[see pictures below]




So a potential gain in CPU time would be 1) to remove these volumes 2) to group them as a big box (StiShape) 








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