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Update digitizer_and_detector_modeling.rst #660

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Jan 25, 2024
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Update digitizer_and_detector_modeling.rst #660

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28 changes: 13 additions & 15 deletions docs/digitizer_and_detector_modeling.rst
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Expand Up @@ -810,43 +810,41 @@ In case of multiple sensitive detectors::

/gate/<detector1>/attachCrystalSD
/gate/<detector2>/attachCrystalSD
/gate/<detector3>/attachCrystalSD

it is possible at some point of your simulation to merge Singles from these different sensitive detectora by doing ::

/gate/digitizerMgr/<detector2>/SinglesDigitizer/<singles_digitizer_name>/insert merger
/gate/digitizerMgr/<detector2>/SinglesDigitizer/<singles_digitizer_name>/addInput <FullNameOfInputSinglesCollectionForDetector1>

where <FullNameOfInputSinglesCollection> is **composed specific name**: <lastDigitizerModuleUsedForDetector2>/<singles_digitizer_name>_<detector1>
/gate/digitizerMgr/<detector2>/SinglesDigitizer/<singles_digitizer_name>/addInput <singles_digitizer_name>_<detector1>

It is easy to see the correct use of the module on the exemple::

# ATTACH SD
/gate/crystal1/attachCrystalSD
/gate/crystal2/attachCrystalSD
/gate/crystal3/attachCrystalSD
...
# DIGITIZER
/gate/digitizerMgr/crystal1/SinglesDigitizer/Singles/insert adder
/gate/digitizerMgr/crystal2/SinglesDigitizer/Singles/insert adder
/gate/digitizerMgr/crystal3/SinglesDigitizer/Singles/insert adder

/gate/digitizerMgr/crystal2/SinglesDigitizer/Singles/insert merger
/gate/digitizerMgr/crystal2/SinglesDigitizer/Singles/addInput adder/Singles_crystal1

**Important note:** merger must be inserted for the last attached sensitive detector otherwise it will not work.
/gate/digitizerMgr/crystal3/SinglesDigitizer/Singles/insert merger
/gate/digitizerMgr/crystal3/SinglesDigitizer/Singles/addInput Singles_crystal1
/gate/digitizerMgr/crystal3/SinglesDigitizer/Singles/addInput Singles_crystal2

In the following of merger digitizer module, apply other modules only on the senstivie detector to which the merger was inserted.

Example::
**Important note:** merger must be inserted for the last attached sensitive detector otherwise it will not work.

/gate/digitizerMgr/crystal2/SinglesDigitizer/Singles/insert readout

In the output you will have Singles collections stored for both sensitive detectors, however only for the last attached you will have the result corresponding to merged output(ex., in Root)::

Singles_crystal1 #(contains the outpout of last digitizer module used for crystal1. adder in this ex.)
Singles_crystal2 #(contains the outpout of last digitizer module used for crystal2. adder+merger+readout in this ex.)
Singles_crystal1 #(contains the outpout of last digitizer module used for crystal1 in this ex.)
Singles_crystal2 #(contains the outpout of last digitizer module used for crystal2 in this ex.)
Singles_crystal3 #(contains the outpout of last digitizer module used for crystal1+crystal2+crystal3 in this ex.)

Thus, the output of *Singles_crystal2* should be used in the following analysis or be inserted for CoincideneSorter::
Thus, the output of *Singles_crystal3* should be used in the following analysis or be inserted for CoincideneSorter::

/gate/digitizerMgr/CoincidenceSorter/Coincidences/setInputCollection Singles_crystal2
/gate/digitizerMgr/CoincidenceSorter/Coincidences/setInputCollection Singles_crystal3

Intrinsic resolution
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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