[mcstas-users] mcstas-users Digest, Vol 35, Issue 3

[Петр Коник]

Dear Erik,

how is it going with porting Perfect_crystal comp to McStas or making
manual how to do it for us?

Best regards,
Peter Konik

2015-01-30 15:00 GMT+04:00  <mcstas-users-request at mcstas.org>:
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>    1. Re: mcstas-users Digest, Vol 35, Issue 2 (???? ?????)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Wed, 28 Jan 2015 16:55:35 +0400
> From: ???? ????? <104pet104 at gmail.com>
> To: mcstas-users at mcstas.org
> Subject: Re: [mcstas-users] mcstas-users Digest, Vol 35, Issue 2
> Message-ID:
>         <CAFZRTKTva9KtXxVo7_BF9mfvnfzDNjpjypL-zNe5kPKn+dO=kg at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> Dear Erik,
>
> we are working on simulations of double crystal diffractometer, so we
> speak on Si crystals with Darwin curve reflections.
>
> Best regards,
> Peter Konik
>
> 2015-01-28 15:00 GMT+04:00  <mcstas-users-request at mcstas.org>:
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>> or, via email, send a message with subject or body 'help' to
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>> Today's Topics:
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>>    1. Perfect crystals (???? ?????)
>>    2. Re: Perfect crystals (Erik B Knudsen)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Tue, 27 Jan 2015 23:08:41 +0400
>> From: ???? ????? <104pet104 at gmail.com>
>> To: mcstas-users at mcstas.org
>> Subject: [mcstas-users] Perfect crystals
>> Message-ID:
>>         <CAFZRTKQF4AXgvR7JagTsxVbY-O_mEChmw-NFf2U=iiakmgVPpg at mail.gmail.com>
>> Content-Type: text/plain; charset=UTF-8
>>
>> Hello everybody!
>>
>> Currently we are working on several simulation project and the
>> question has arised how to handle perfect Si crystals? We think of
>> crystal with small mosaicity or mirror with corresponding reflectivity
>> profile. Is there any more native and general approach?
>>
>> Best regards,
>> Peter Konik
>>
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Wed, 28 Jan 2015 11:34:30 +0100
>> From: Erik B Knudsen <erkn at fysik.dtu.dk>
>> To: <mcstas-users at mcstas.org>
>> Subject: Re: [mcstas-users] Perfect crystals
>> Message-ID: <54C8BB36.3000207 at fysik.dtu.dk>
>> Content-Type: text/plain; charset="UTF-8"; format=flowed
>>
>> Dear Peter,
>>
>> This depends really on how perfect your crystal is. The Single_crystal component distributed with McStas
>> currently regards mosaicity as a gaussian approximation, and as such might not be appropriate for use
>> with perfect crystals.
>> In case of a Darwin width dominated crystal, we could possibly modify
>> the Perfect_crystal component that exists in McXtrace (the X-ray sister of McStas) to handle neutrons instead.
>> It has some other limitations but this can also be extended. This shouldn't be very difficult to do.
>>
>> I guess the appropriate route depends a lot on what it is exactly you want to do and more details about the actual
>> crystals. Could you be a little more specific? For sure we'd be happy to help you along.
>>
>> cheers
>> Erik
>>
>> On 27/01/15 20:08, ???? ????? wrote:
>>> Hello everybody!
>>>
>>> Currently we are working on several simulation project and the
>>> question has arised how to handle perfect Si crystals? We think of
>>> crystal with small mosaicity or mirror with corresponding reflectivity
>>> profile. Is there any more native and general approach?
>>>
>>> Best regards,
>>> Peter Konik
>>> _______________________________________________
>>> mcstas-users mailing list
>>> mcstas-users at mcstas.org
>>> http://mailman.mcstas.org/cgi-bin/mailman/listinfo/mcstas-users
>>>
>>
>> --
>> Erik Bergb?ck Knudsen, Research Engineer | DTU | morituri
>> NEXMAP, DTU Fysik, DK-2800 Kgs. Lyngby, Denmark |<>-<>| te
>> phone: (+45) 2132 6655 |<>-<>| salutant
>>
>>
>>
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