[Gate-users] How to set the timing resolution of Two-layer detector

[Ane Etxebeste]

Hi,

If the layer volumes have different names, in principle, you should be 
able to apply "localTimeResolution" module.

Below you can find the commands to set a different time resolution to 
two different SD detectors called layer1 and layer2.


/gate/digitizer/Singles/insert localTimeResolution

/gate/digitizer/Singles/localTimeResolution/chooseNewVolume layer1
/gate/digitizer/Singles/localTimeResolution/layer1/setTimeResolution 10 ns
/gate/digitizer/Singles/localTimeResolution/chooseNewVolume layer2
/gate/digitizer/Singles/localTimeResolution/layer2/setTimeResolution 15 ns


Did it work?


Best regards,

Ane


On 25/01/2021 06:04, Maxime Toussaint wrote:
> Greetings,
>
> I have never worked with the "Compton camera imaging" part of Gate. 
> Read carefully that section to make sure it applies for your case of 
> interest.
>
> About your second question, I believe that Gate user either set the 
> same tof resolution for both layer or add the tof blur after the 
> simulation. The concept of layer-dependent tof resolution is kinda new 
> compared to Gate, after all.
>
> About your third question, I would, assuming that Gate can't define a 
> layer-dependent tof resolution, add the tof blur after the simulation.
>
> Bests,
> Maxime Toussaint
> ------------------------------------------------------------------------
> *De :* 김수환 <ksh2454178 at naver.com>
> *Envoyé :* 24 janvier 2021 23:40
> *À :* Maxime Toussaint <Maxime.Toussaint at USherbrooke.ca>; 
> gate-users at lists.opengatecollaboration.org 
> <gate-users at lists.opengatecollaboration.org>
> *Objet :* Re: [Gate-users] How to set the timing resolution of 
> Two-layer detector
>
> Hi Maxime Toussaint.
>
> Thank you very much for your reply
>
> I have seen '6.4.7.Local time resolution' in the GATE user guide.
>
> It looks possible, doesn't it?
>
> If not, how do GATE users generally use?
>
> Do you enter the average of the two time resolution values?
>
> Very difficult
>
> Thank you.
>
> Su Hwan Kim
>
> -----Original Message-----
> *From:* "Maxime Toussaint"<Maxime.Toussaint at USherbrooke.ca>
> *To:* 
> "gate-users at lists.opengatecollaboration.org"<gate-users at lists.opengatecollaboration.org>;
> *Cc:*
> *Sent:* 2021-01-25 (월) 12:16:16 (GMT+09:00)
> *Subject:* Re: [Gate-users] How to set the timing resolution of 
> Two-layer detector
>
> Greetings,
> To the best of my knowledge, the Single digitizer treat every crystal 
> equal. Thus, you cannot use Gate as-is to set multiple values of 
> timing resolution. You must either modify Gate to enable this feature 
> or add the timing blur after the simulation.
> Bests,
> Maxime Toussaint
> ------------------------------------------------------------------------
> *De :* Gate-users <gate-users-bounces at lists.opengatecollaboration.org> 
> de la part de 김수환 <ksh2454178 at naver.com>
> *Envoyé :* 24 janvier 2021 21:16
> *À :* gate-users at lists.opengatecollaboration.org 
> <gate-users at lists.opengatecollaboration.org>
> *Objet :* [Gate-users] How to set the timing resolution of Two-layer 
> detector
>
> Dear GATE users
>
> I'm designing a two-layer PET detector.
>
> I know the time resolution for each crystal.
>
> The time resolution of the crystal at the bottom is 140.8 ps and the 
> crystal at the top is 244.0 ps.
>
> How do I set the digitizer?
>
> Below is the digitizer in my macro file.
>
> ----------------------------------------------------------------------
>
> #D I G I T I Z E R
>
> /gate/digitizer/Singles/insert adder
>
> /gate/digitizer/Singles/insert readout
>
> /gate/digitizer/Singles/readout/setDepth 4
>
> /gate/digitizer/Singles/insert blurring
>
> /gate/digitizer/Singles/blurring/setLaw linear
>
> /gate/digitizer/Singles/blurring/linear/setResolution 0.15
>
> /gate/digitizer/Singles/blurring/linear/setEnergyOfReference 511. keV
>
> /gate/digitizer/Singles/insert thresholder
>
> /gate/digitizer/Singles/thresholder/setThreshold 450. keV
>
> /gate/digitizer/Singles/insert upholder
>
> /gate/digitizer/Singles/upholder/setUphold 650. keV
>
> /gate/digitizer/Singles/insert timeResolution
>
> ???????????????????????????????????????????
>
> -----------------------------------------------------------------------
>
> I need your help.
>
> Thank you.
>
>
>
> _______________________________________________
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> Gate-users at lists.opengatecollaboration.org
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