[Simnibs-discuss] Parameter of coils

[Axel Thielscher]

Hi Ben,

increasing the number of turns while keeping the other parameters equal 
will only affect the absolute strength of the field, but not its spatial 
distribution. To simulate this effect, you can simply increase the 
simulated strength of the pulse by 9/5, and keep the same coil model.

Best,

Axel


On 5/4/2021 9:39 PM, ben kiffer wrote:
> Hi,
> I apologize for the confusion.
> The coil No29_MagVenture_C-B60_Fig8. nii. gz has 5 turns/ wing × 2 wings × 2 layers I need the following winding for my work 9 turns/ wing × 2 wings × 2 layers. The rest of the parameters should be equal.
> Thank you in advance for your help.
> Best,
> Ben
>
> Von meinem iPhone gesendet
>
>> Am 04.05.2021 um 20:51 schrieb Axel Thielscher <axelt at drcmr.dk>:
>>
>> Dear Ben,
>>
>> can you state more specifically what you mean by 9 coils? Does this refer to the number of cable loops for each half of the figure-8 coil?
>>
>> Best regards,
>>
>> Axel
>>
>>
>>> On 5/4/2021 11:37 AM, ben kiffer wrote:
>>> Hi,
>>> Thank you very much for the answer.
>>> For my simulations I use the coil No29_MagVenture_C-B60_Fig8. nii. gz, however, according to the data sheet the coil has 5 coils and I would need the same coil with 9 coils for my work.
>>> I would appreciate your feedback.
>>> Best regards,
>>> Ben
>>>
>>> Von meinem iPhone gesendet
>>>
>>>>> Am 04.05.2021 um 10:03 schrieb Axel Thielscher <axelt at drcmr.dk>:
>>>> Hi,
>>>>
>>>> do you want to model a specific TMS coil? If yes, which one? We might be able to supply you with a model for that. The models which we have are in general not parametric.
>>>>
>>>> Best regards,
>>>>
>>>> Axel
>>>>
>>>>
>>>>> On 4/20/2021 1:36 PM, ben kiffer wrote:
>>>>> Dear Ladies and Gentlemen,
>>>>> First, I want to give you a praise for Simnibs, the program has already helped me a lot in the field of transcranial magnetic stimulation and works perfectly.
>>>>> I wanted to ask if somehow there is the possibility to adjust parameters (no. of coils & diameter) of the coil (Magstim_70mm_Fig8. nii. gz), this would make my work much easier and would bring me much further. I would be very happy to hear an answer.
>>>>> With kind regards
>>>>> Ben Kiffer
>>>>> _______________________________________________
>>>>> Simnibs-discuss mailing list
>>>>> Simnibs-discuss at drcmr.dk
>>>>> https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmailman.drcmr.dk%2Fmailman%2Flistinfo%2Fsimnibs-discuss&data=04%7C01%7C%7C2a3d40f084424e350fac08d90f2da118%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637557510924393537%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=YkI08Fh3Gnmlr76E0VYJIv5Obnu2wSYbV9dqTfrPJW4%3D&reserved=0
>>>> -- 
>>>> Dr. Axel Thielscher
>>>> Associate Professor
>>>> Danish Research Center for Magnetic Resonance
>>>> Copenhagen University Hospital Hvidovre
>>>> DK-2650 Hvidovre, Denmark
>>>> https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.drcmr.dk%2F&data=04%7C01%7C%7C2a3d40f084424e350fac08d90f2da118%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637557510924393537%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=ZVR0iqTKzUiFJBkAPP0QkfwX4vWjcLQBRPQdnjEGaNk%3D&reserved=0
>>>> &
>>>> Department of Health Technology
>>>> Technical University of Denmark
>>>> DK-2800 Kgs. Lyngby
>>>> https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.healthtech.dtu.dk%2F&data=04%7C01%7C%7C2a3d40f084424e350fac08d90f2da118%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637557510924393537%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=fYiIpLDH8KBj4syIG8f4FOl5xgRajMl3Z72FfcWyWns%3D&reserved=0
>>>>
>> -- 
>> Dr. Axel Thielscher
>> Associate Professor
>> Danish Research Center for Magnetic Resonance
>> Copenhagen University Hospital Hvidovre
>> DK-2650 Hvidovre, Denmark
>> https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.drcmr.dk%2F&data=04%7C01%7C%7C2a3d40f084424e350fac08d90f2da118%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637557510924393537%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=ZVR0iqTKzUiFJBkAPP0QkfwX4vWjcLQBRPQdnjEGaNk%3D&reserved=0
>> &
>> Department of Health Technology
>> Technical University of Denmark
>> DK-2800 Kgs. Lyngby
>> https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.healthtech.dtu.dk%2F&data=04%7C01%7C%7C2a3d40f084424e350fac08d90f2da118%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637557510924393537%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=fYiIpLDH8KBj4syIG8f4FOl5xgRajMl3Z72FfcWyWns%3D&reserved=0
>>
-- 
Dr. Axel Thielscher
Associate Professor
Danish Research Center for Magnetic Resonance
Copenhagen University Hospital Hvidovre
DK-2650 Hvidovre, Denmark
www.drcmr.dk
&
Department of Health Technology
Technical University of Denmark
DK-2800 Kgs. Lyngby
http://www.healthtech.dtu.dk/