Search found 49 matches

by Aamna_Khan
01 Feb 2024, 17:08
Forum: Installation
Topic: Installation Issue: 'oagtclsh' Not Found
Replies: 4
Views: 164

Re: Installation Issue: 'oagtclsh' Not Found

Thank you. This helped me figure out the correct directory:

sudo ln -s /usr/local/opt/tcl-tk/bin/tclsh /usr/local/bin/oagtclsh
by Aamna_Khan
01 Feb 2024, 12:30
Forum: Installation
Topic: Installation Issue: 'oagtclsh' Not Found
Replies: 4
Views: 164

Re: Installation Issue: 'oagtclsh' Not Found

❯ echo $PATH /Users/aamnakhan/sdds/oagtcltk/usr/bin:/Users/aamnakhan/sdds/mpich-3.4:/Users/aamnakhan/sdds/darwin-x86_sdds:/Users/aamnakhan/sdds/darwin-x86:/Users/aamnakhan/anaconda3/condabin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.crypte...
by Aamna_Khan
01 Feb 2024, 11:49
Forum: Installation
Topic: Installation Issue: 'oagtclsh' Not Found
Replies: 4
Views: 164

Installation Issue: 'oagtclsh' Not Found

Hello, I've encountered an issue with a script named 'km2ssds' on my macOS system. It was previously functioning correctly, but for some unknown reason, it has suddenly stopped working. Now, I am receiving an error message stating that 'oagtclsh' is not found. > km2sdds /Users/aamnakhan/sdds/darwin-...
by Aamna_Khan
21 Jun 2021, 13:32
Forum: Ring Tracking
Topic: Transverse impedance discrepancy with measurement
Replies: 8
Views: 8285

Re: Transverse impedance discrepancy with measurement

Hi Michael,

Just a reminder, can you please check the attached file to comment on the vertical emittance damping with coupling?

Thanks,
Aamna
by Aamna_Khan
23 Apr 2021, 09:14
Forum: Ring Tracking
Topic: Transverse impedance discrepancy with measurement
Replies: 8
Views: 8285

Re: Transverse impedance discrepancy with measurement

Hi Michael,

For coupling, random errors were added to skew quadrupoles with names beginning from “sq” in the .lte file (originally set to zero) to adjust the vertical emittance to 30 pm.

For uncoupled lattice, vertical emittance is set to ~8pm.

Thanks,
Aamna
by Aamna_Khan
22 Apr 2021, 14:43
Forum: Ring Tracking
Topic: Transverse impedance discrepancy with measurement
Replies: 8
Views: 8285

Re: Transverse impedance discrepancy with measurement

Thank you for your response, Michael. I still don't see the equlibrium beam size for coupling lattice. The initial bunch size using the average beta function of 13.8m for emittance = 30pm is ~20 microns, but ILMATRIX gives betay = 3.366872m. How does elegant compute the initial vertical distribution...
by Aamna_Khan
31 Mar 2021, 15:08
Forum: Ring Tracking
Topic: Transverse impedance discrepancy with measurement
Replies: 8
Views: 8285

Re: Transverse impedance discrepancy with measurement

Hi Michael, Thank you for your response! I increased the n_kicks in the lattice file as you suggested, and I don’t see any major change. Aditionally, I’m not able to understand why the initial vertical beam size is not equilibrium with or without impedance. I observe this behavior for a lattice with...
by Aamna_Khan
23 Mar 2021, 18:11
Forum: Ring Tracking
Topic: Transverse impedance discrepancy with measurement
Replies: 8
Views: 8285

Transverse impedance discrepancy with measurement

Hi Michael, We are facing the discrepancy between the measurements and simulations in the vertical plane while studying the head-tail instability for NSLS-II. We use the equilibrium bunch length for a particular beam current and then add 0.1mm transverse kick. Strangely, we also need a very high shu...
by Aamna_Khan
22 Feb 2021, 14:00
Forum: General
Topic: Implementation of bunch lengthning and transverse impedance
Replies: 10
Views: 10753

Implementation of bunch lengthning and transverse impedance

Hello Michael, I’m studying the head-tail instability for NSLS-II by taking into account the intensity-dependent (zlong) bunch lengthening. To do this, I tried to implement the initial bunch length obtained from zlongit simulations for a specific current and then gave the transverse impedance kick. ...