Search found 125 matches

by kuprov
Sun Mar 05, 2023 1:52 pm
Forum: Spinach support
Topic: Data Creation for Machine Learning
Replies: 2
Views: 41

Re: Data Creation for Machine Learning

Should be no problem in Spinach - use one of the existing large HSQC examples, get it to read your specifications instead of (currently) sucrose, and get it to write the results out in the format that you like.
by kuprov
Sun Feb 05, 2023 4:18 pm
Forum: Spinach support
Topic: Simulating off-resonance R1rho
Replies: 1
Views: 65

Re: Simulating off-resonance R1rho

Of course there is - take, for example, the soft pulse-acquire sequence code and modify it as necessary: just add more pulses with your phases, durations, and nutation frequencies.
by kuprov
Thu Dec 22, 2022 8:45 am
Forum: Spinach support
Topic: gradient pulse simulation
Replies: 1
Views: 123

Re: gradient pulse simulation

Of course it can. Use the imaging() context (see imaging examples for how to use it); it returns gradients as operators. At that point, gradient operators may be used in exactly the same way as pulse operators, including in shaped pulse functions, such as shaped_pulse_xy(), including simultaneously ...
by kuprov
Wed Dec 21, 2022 6:03 am
Forum: Spinach support
Topic: Homospoil or coherence order selection in 'zeeman-hilb' formalism
Replies: 4
Views: 157

Re: Homospoil or coherence order selection in 'zeeman-hilb' formalism

Okay, I'll cook up something - it will be slow af, but it will work.
by kuprov
Tue Dec 20, 2022 11:26 am
Forum: Spinach support
Topic: Homospoil or coherence order selection in 'zeeman-hilb' formalism
Replies: 4
Views: 157

Re: Homospoil or coherence order selection in 'zeeman-hilb' formalism

How's this looking? In Hilbert space, computationally efficient coherence selection is non-trivial because (unlike in spherical tensor notation) the basis is not already sorted by single-spin coherence order.
by kuprov
Tue Dec 13, 2022 7:28 am
Forum: Spinach support
Topic: Solid Effect DNP Resonance Confusion
Replies: 5
Views: 218

Re: Solid Effect DNP Resonance Confusion

Alright - I think I can do the syntax matching. :) Working on it...
by kuprov
Mon Dec 12, 2022 7:58 pm
Forum: Spinach support
Topic: Solid Effect DNP Resonance Confusion
Replies: 5
Views: 218

Re: Solid Effect DNP Resonance Confusion

It would actually be very useful to know what syntax fees more natural - I can make alterations of course. How would you wish that parametrisation to work?
by kuprov
Sun Dec 11, 2022 8:21 am
Forum: Spinach support
Topic: Solid Effect DNP Resonance Confusion
Replies: 5
Views: 218

Re: Solid Effect DNP Resonance Confusion

Okay, in the order of the original post: 1. The sys.magnet parameter does set the centre of the sweep - this is the field that goes into the background Hamiltonian in Line 70 of dnp_field_sweep.m function. The microwave offset is then added in Line 78, and the field offset inside the loop. The code ...
by kuprov
Sun Nov 13, 2022 2:43 pm
Forum: Spinach support
Topic: Trying to simulate DARR
Replies: 1
Views: 210

Re: Trying to simulate DARR

Dear Rajat, of course it would slow down as you add more spins - without approximations, the complexity of Liouville space simulations of spin-1/2 systems grows very rapidly. Matrix dimensions go as 4^n, and then matrix-vector multiplication complexity scales quadratically with the dimension, so we ...
by kuprov
Wed Oct 12, 2022 9:27 am
Forum: General discussion
Topic: Page can't be found!
Replies: 4
Views: 2794

Re: Page can't be found!

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