Search found 84 matches
- 26 Mar 2021, 11:48
- Forum: Linac Tracking
- Topic: Unexpected values of effective aperture
- Replies: 1
- Views: 12833
Unexpected values of effective aperture
Hi, I'm currently doing some simple scans of the centroid angle of the beam going into a beamline, to get a feeling for the angular acceptance and where charge is lost (which I recently asked some questions about at https://www3.aps.anl.gov/forums/elegant/viewtopic.php?f=15&t=1157&p=4769#p4769 ). I ...
- 25 Mar 2021, 12:24
- Forum: Parameter Scanning
- Topic: Scanning parameters of a bunched_beam
- Replies: 2
- Views: 14608
Re: Scanning parameters of a bunched_beam
Hi Michael,
That is indeed such a simple solution that I'm looking for, thanks! I had totally missed that element.
EDIT:
Follow-up question: can I use the vary_element function to perform a 2D scan, of dxp and dyp in this case?
- Jonas
That is indeed such a simple solution that I'm looking for, thanks! I had totally missed that element.
EDIT:
Follow-up question: can I use the vary_element function to perform a 2D scan, of dxp and dyp in this case?
- Jonas
- 25 Mar 2021, 04:58
- Forum: Parameter Scanning
- Topic: Scanning parameters of a bunched_beam
- Replies: 2
- Views: 14608
Scanning parameters of a bunched_beam
Hi folks, Maybe there's something obvious I'm missing, but I haven't been able to find a way to automatize the scanning of parameters of a @bunched_beam the way you can scan for example the strength of a magnet with @vary_element; in my application I want to scan the angular centroids in x and y. Is...
- 30 Mar 2020, 13:43
- Forum: Optimization and Matching
- Topic: How does the ABSVALUE option in CLEAN work?
- Replies: 3
- Views: 9769
Re: How does the ABSVALUE option in CLEAN work?
Hi Michael! No worries! I realize now that I didn't fully ask the question I actually wanted; how does it work for time? I have used it successfully to remove particles with some particular transverse coordinates, but when I now try to use it to discriminate particles in time, it behaves strangely. ...
- 24 Mar 2020, 08:05
- Forum: Optimization and Matching
- Topic: How does the ABSVALUE option in CLEAN work?
- Replies: 3
- Views: 9769
How does the ABSVALUE option in CLEAN work?
Hi, Hopefully a simple enough question to answer: How does the ABSVALUE parameter in CLEAN elements work? I want to cut out part of the temporal distribution below/above some value for the purpose of optimizing on only a part of the full beam (I have two bunches in the same file and want to select o...
- 11 Feb 2020, 02:11
- Forum: General
- Topic: Elegant using Intel vs AMD CPUs
- Replies: 2
- Views: 2440
Re: Elegant using Intel vs AMD CPUs
Hi Nikita! It would be really cool if you could try it on the R5 3600, just check some quick scaling with number of threads! It's a good idea to pay for a compute instance, but I'm not very familiar with that kind of stuff and unfortunately don't really have the time to get into it right now. I will...
- 29 Jan 2020, 03:36
- Forum: General
- Topic: Elegant using Intel vs AMD CPUs
- Replies: 2
- Views: 2440
Elegant using Intel vs AMD CPUs
Hi! Not directly related to anything on a user level in the code, more something I've been wondering for a while, out of curiosity: Has anyone benchmarked Elegant (well, actually Pelegant) on any recent Intel and AMD CPUs? I don't know a whole ton on the topic of instruction sets, but I do know that...
- 19 Feb 2019, 08:41
- Forum: Linac Tracking
- Topic: Longitudinal phase-space curvature
- Replies: 1
- Views: 4170
Longitudinal phase-space curvature
Hi, I am looking at generating beams inside Elegant for test purposes. I want them to have a chirp, and I also want to be able to set specific curvatures, e.g. from the RF voltage, for a beam going into a compressor. I really can't figure out how to do this, and to me, it looks like it is not possib...
- 05 Dec 2018, 10:50
- Forum: Bugs
- Topic: Transfer matrices strongly dependent on element_divisions
- Replies: 4
- Views: 9084
Re: Transfer matrices strongly dependent on element_divisions
Hi, So, the specific terms I were looking at were U1666 and U2666, which changed with element_divisions, and which are just transverse. I looked at these matrix terms over an entire bunch compressor, which contains CSRCSBENDs, KQUADs, KSEXTs, KOCTs and EDRIFTs, so it's not a simple setup. I didn't c...
- 04 Dec 2018, 01:54
- Forum: Bugs
- Topic: Transfer matrices strongly dependent on element_divisions
- Replies: 4
- Views: 9084
Transfer matrices strongly dependent on element_divisions
Hi, I was optimizing some second- and third-order matrix terms and then did some tracking to confirm all the values after the optimizer had converged. I wanted to track with more element_divisions than 1 to get nicer plots. U1666 and U2666 specifically were about 2-3 orders of magnitude larger than ...