Feature #1543
Step pi design study
Added by Rogers, Chris almost 9 years ago. Updated about 6 years ago.
100%
Description
We have been requested by DOE MAP review committee to make a design study for a new lattice without a coupling coil.
Files
Step-pi-symmetric-lattice.pdf (184 KB) Step-pi-symmetric-lattice.pdf | Rogers, Chris, 18 August 2014 08:21 | ||
2_cavity_spacing.jpg (439 KB) 2_cavity_spacing.jpg | Rogers, Chris, 18 August 2014 08:23 | ||
TD-1152-9148-1.pdf (158 KB) TD-1152-9148-1.pdf | Engineering drawing from Jason Tarrant | Blackmore, Victoria, 18 August 2014 11:26 | |
TD-1152-9243-1.pdf (185 KB) TD-1152-9243-1.pdf | Engineering drawing from Jason Tarrant | Blackmore, Victoria, 18 August 2014 11:26 | |
AFC_AsBuilt.jpg (269 KB) AFC_AsBuilt.jpg | Drawing from TESLA | Blackmore, Victoria, 18 August 2014 11:26 | |
2014-08-14-Step-pi.pdf (88 KB) 2014-08-14-Step-pi.pdf | Long, Kenneth, 18 August 2014 16:04 | ||
Step-pi-symmetric-lattice.pdf (427 KB) Step-pi-symmetric-lattice.pdf | Rogers, Chris, 19 August 2014 09:23 | ||
MICE_StepPi_JPasternak.pdf (276 KB) MICE_StepPi_JPasternak.pdf | Slides of Jaroslaw Pasternak | Rogers, Chris, 19 August 2014 11:54 | |
Alternative_Lattice_Design.pdf (574 KB) Alternative_Lattice_Design.pdf | Blackmore, Victoria, 20 August 2014 13:12 | ||
Step-pi-symmetric-lattice_v3.pdf (446 KB) Step-pi-symmetric-lattice_v3.pdf | Update to add acceptance plots | Rogers, Chris, 20 August 2014 14:14 | |
StepPi_reference_version_1.dat (9.19 KB) StepPi_reference_version_1.dat | MAUS lattice for StepPi reference version 1 | Rogers, Chris, 20 August 2014 18:03 | |
StepPi_reference_version_1_for003.dat (1.07 MB) StepPi_reference_version_1_for003.dat | ICOOL beam file for particles on hyper ellipsoid | Rogers, Chris, 20 August 2014 18:03 | |
Step-pi-symmetric-lattice_v4.pdf (472 KB) Step-pi-symmetric-lattice_v4.pdf | Rogers, Chris, 21 August 2014 15:00 | ||
StepPi_reference_version_2.tar.gz (17.1 KB) StepPi_reference_version_2.tar.gz | Reference version 2 | Rogers, Chris, 21 August 2014 17:21 | |
Bz.png (20.1 KB) Bz.png | Rogers, Chris, 22 August 2014 07:14 | ||
beta.png (30.1 KB) beta.png | Rogers, Chris, 22 August 2014 07:14 | ||
As-built_coil_dimensions__positions_and_currents.pdf (1.63 MB) As-built_coil_dimensions__positions_and_currents.pdf | Blackmore, Victoria, 22 August 2014 09:54 | ||
Step-pi-symmetric-lattice_v5.pdf (521 KB) Step-pi-symmetric-lattice_v5.pdf | Momentum spread, tracking vs z results, clean up of some older plots | Rogers, Chris, 22 August 2014 16:28 | |
Alternative_Lattices.pdf (1.05 MB) Alternative_Lattices.pdf | Blackmore, Victoria, 29 August 2014 17:47 | ||
icool_vs_g4bl_comparison.pdf (213 KB) icool_vs_g4bl_comparison.pdf | Snopok, Pavel, 29 August 2014 18:05 | ||
corrections.zip (7.08 MB) corrections.zip | Rogers, Chris, 09 September 2014 09:43 | ||
output___--_FC_40.0_p_200.0.tar.gz (65.1 MB) output___--_FC_40.0_p_200.0.tar.gz | Rogers, Chris, 19 September 2014 17:05 | ||
Rogers_AlternativeLattice.dat (9.87 KB) Rogers_AlternativeLattice.dat | Blackmore, Victoria, 30 September 2014 11:18 | ||
Rogers_AlternativeLattice_InputBeam.py (1.67 KB) Rogers_AlternativeLattice_InputBeam.py | Blackmore, Victoria, 30 September 2014 11:18 | ||
Snopok_ReferenceLattice.g4bl (3.63 KB) Snopok_ReferenceLattice.g4bl | Blackmore, Victoria, 30 September 2014 11:18 | ||
StepPi_SimulationDescription.pdf (4.47 MB) StepPi_SimulationDescription.pdf | Blackmore, Victoria, 03 October 2014 12:18 | ||
Step3PiBy2LatticeNote.zip (8.77 MB) Step3PiBy2LatticeNote.zip | Blackmore, Victoria, 03 October 2014 12:22 | ||
DOE_Geomtry_File.dat (67.3 KB) DOE_Geomtry_File.dat | Hunt, Christopher, 03 October 2014 14:23 | ||
StepPi_SimulationDescription_v2.pdf (4.47 MB) StepPi_SimulationDescription_v2.pdf | Updated text only, 13/Oct/14 | Blackmore, Victoria, 13 October 2014 11:50 | |
fc_sim.tar.gz (41.1 MB) fc_sim.tar.gz | Rogers, Chris, 29 October 2014 14:31 | ||
simulation_analysis.py (18.2 KB) simulation_analysis.py | Rogers, Chris, 29 October 2014 14:34 | ||
Step_3pi2_ref_8_1.dat (68.6 KB) Step_3pi2_ref_8_1.dat | Geometry File | Hunt, Christopher, 31 October 2014 16:18 | |
Conf_multi_Step_3pi2_ref_8_1.py (2.83 KB) Conf_multi_Step_3pi2_ref_8_1.py | Configuration File | Hunt, Christopher, 31 October 2014 16:18 | |
Conf_multi_Step_3pi2_ppmm_5.py (2.82 KB) Conf_multi_Step_3pi2_ppmm_5.py | Configuration File for geometry 5 | Hunt, Christopher, 01 November 2014 17:28 | |
Step_3pi2_ppmm_5.dat (68.6 KB) Step_3pi2_ppmm_5.dat | Geometry 5 - Only primary absorber included | Hunt, Christopher, 01 November 2014 17:28 | |
Conf_multi_Step_3pi2_ppmm_12.py (2.82 KB) Conf_multi_Step_3pi2_ppmm_12.py | Configuration File for geometry 11. Emittance_l = 0.020, alpha_l = 0.0 | Hunt, Christopher, 01 November 2014 17:28 | |
Conf_multi_Step_3pi2_ppmm_16.py (2.82 KB) Conf_multi_Step_3pi2_ppmm_16.py | Configuration File for geomtry 11. Emittance_l = 0.004, alpha_l = -1.0 | Hunt, Christopher, 01 November 2014 17:28 | |
Step_3pi2_ppmm_11.dat (69.3 KB) Step_3pi2_ppmm_11.dat | Geomtry 11. Secondary absorbers included. | Hunt, Christopher, 01 November 2014 17:28 | |
reference_plots_vs_z.tar.gz (185 KB) reference_plots_vs_z.tar.gz | Rogers, Chris, 07 November 2014 16:48 | ||
simulation_analysis_v2.py (20.8 KB) simulation_analysis_v2.py | Rogers, Chris, 07 November 2014 16:48 | ||
alternative_plots_vs_z.tar.gz (1.95 MB) alternative_plots_vs_z.tar.gz | Rogers, Chris, 09 November 2014 04:46 | ||
emit_in_vs_.tar.gz (48.4 KB) emit_in_vs_.tar.gz | Rogers, Chris, 09 November 2014 05:30 | ||
reference_radius_plots_vs_z.tar.gz (71.7 KB) reference_radius_plots_vs_z.tar.gz | Rogers, Chris, 09 November 2014 06:28 | ||
alternative_radius_plots.tar.gz (73 KB) alternative_radius_plots.tar.gz | Rogers, Chris, 09 November 2014 06:28 | ||
MICE-Demonstration-Of-Ionisation-Cooling.pdf (1.06 MB) MICE-Demonstration-Of-Ionisation-Cooling.pdf | Blackmore, Victoria, 10 November 2014 13:11 | ||
Conf_multi_Step_3pi2_ref_ppmm_19_em_6.py (2.86 KB) Conf_multi_Step_3pi2_ref_ppmm_19_em_6.py | Hunt, Christopher, 20 November 2014 17:40 | ||
Conf_multi_Step_3pi2_alt_4_em_6.py (2.86 KB) Conf_multi_Step_3pi2_alt_4_em_6.py | Hunt, Christopher, 20 November 2014 17:40 | ||
Conf_multi_Step_3pi2_alt_5_em_6.py (2.86 KB) Conf_multi_Step_3pi2_alt_5_em_6.py | Hunt, Christopher, 20 November 2014 17:40 | ||
Step_3pi2_alt_4.dat (52.3 KB) Step_3pi2_alt_4.dat | Hunt, Christopher, 20 November 2014 17:40 | ||
Step_3pi2_alt_5.dat (52.8 KB) Step_3pi2_alt_5.dat | Hunt, Christopher, 20 November 2014 17:40 | ||
Step_3pi2_ppmm_5.dat (68.6 KB) Step_3pi2_ppmm_5.dat | Hunt, Christopher, 20 November 2014 17:40 | ||
Step_3pi2_ppmm_11.dat (69.3 KB) Step_3pi2_ppmm_11.dat | Hunt, Christopher, 20 November 2014 17:40 | ||
Conf_multi_Step_3pi2_ref_ppmm_18_em_6.py (2.86 KB) Conf_multi_Step_3pi2_ref_ppmm_18_em_6.py | Hunt, Christopher, 20 November 2014 17:40 | ||
dan_kaplan_demo_corrections.zip (11.6 MB) dan_kaplan_demo_corrections.zip | Rogers, Chris, 03 August 2016 10:55 | ||
Comments_on_MICE_Demo_paper.pdf (19.1 KB) Comments_on_MICE_Demo_paper.pdf | Rogers, Chris, 03 August 2016 11:04 | ||
DEMO-paper_v1.3jhc.pdf (1.51 MB) DEMO-paper_v1.3jhc.pdf | Rogers, Chris, 10 August 2016 10:27 | ||
DEMO-paper_v1.3-kevin-ronald.pdf (1.47 MB) DEMO-paper_v1.3-kevin-ronald.pdf | Rogers, Chris, 10 August 2016 10:57 |
Related issues
Updated by Rogers, Chris almost 9 years ago
Our plan is to make a technical note by NuFact. We plan to examine the following lattices:
Design options¶
- symmetric lattice:
- flip
(FC +- -+)
- alternative flip
(FC +- +-)
- semi-flip
(FC ++ --)
- solenoid
(FC ++ ++)
- flip
- RF near SS
- SS RF AFC RF AFC RF SS
- SS RF AFC RF SS
- asymmetric magnetic lattice:
- anything goes
- absorber:
- in middle of 2 RF cavities
- in AFC
- in both positions
- tracker radiation shielding
- using absorber in AFC
- using shielding in tracker volume
- unshielded tracker
- RF
- 1 cavity
- 2 cavity
Design Criteria¶
Our design criteria will be
- Lattice quality
- cooling performance
- cell optics
- momentum restoration
- similarity to known cooling channel design
- quality of match to spectrometer (for symmetric case)
- scraping aperture/transverse acceptance
- momentum acceptance
- canonical angular momentum effects
- Engineering issues
- current limits of magnets
- incremental cost of any additional hardware
- radiation load on the tracker
- RF breakdown (in magnetic fields)
Assumptions¶
Our assumptions are:- Geometry
- AFC dimension 844 mm full length [source: Blackmore]
- AFC - RF bellows 56 mm [source: Blackmore]
- single cavity module length - assume 600 mm [source: Yagmur]
- two cavity module length - assume 1000 mm [source: Yagmur]
- RF
- RF power available - 4 MW as baseline, with 8 MW as an upgrade with corresponding cost, schedule and technical risk
- RF volts is sqrt(cavity power)*8 MV/m
- Step IV coil pack As-built_coil_dimensions__positions_and_currents.pdf [Victoria Blacmore]
- The spectrometer solenoid coils (Match1 through End2) can be moved bodily away from FC module; but no closer
- probably some other stuff we didn't think of yet...
The level of study we intend will all be linear beam optics with no tracking for first iteration.
Updated by Rogers, Chris almost 9 years ago
First thoughts on lattice design...
Updated by Rogers, Chris almost 9 years ago
- File 2_cavity_spacing.jpg 2_cavity_spacing.jpg added
Engineering diagram for proposed 2 cavity module planned for Step V (c/o Bross)
Updated by Blackmore, Victoria almost 9 years ago
- File TD-1152-9148-1.pdf TD-1152-9148-1.pdf added
- File TD-1152-9243-1.pdf TD-1152-9243-1.pdf added
- File AFC_AsBuilt.jpg AFC_AsBuilt.jpg added
SS and FC positions and dimensions, centred on Step IV: pdf
Based on:
1. Engineering drawing of AFC
2. Engineering drawing of SS
3. FC built dimensions
Updated by Blackmore, Victoria almost 9 years ago
- File As-built_coil_dimensions_and_locations.pdf added
Blackmore, Victoria wrote:
SS and FC positions and dimensions, centred on Step IV: pdf
Based on:
1. Engineering drawing of AFC
2. Engineering drawing of SS
3. FC built dimensions
Also uploaded table of "as built" coil dimensions and positions, with positions corresponding to z = 0 at the centre of the FC.
Updated by Long, Kenneth almost 9 years ago
- File 2014-08-14-Step-pi.pdf 2014-08-14-Step-pi.pdf added
Notes on our meeting 14:00 18Aug14:
Updated by Rogers, Chris almost 9 years ago
Updated slides with optics solutions/discussion
Updated by Rogers, Chris almost 9 years ago
Updated by Blackmore, Victoria almost 9 years ago
- File As-built_coil_dimensions__positions_and_currents.pdf added
Updated magnet position document. Now includes:
- table of 'as built' coil dimensions
- maximum currents and current densities coils have been operated at
- diagrams of coil locations within Step IV.
Updated by Blackmore, Victoria almost 9 years ago
Slides for this afternoon
Updated by Rogers, Chris almost 9 years ago
Updated by Rogers, Chris almost 9 years ago
- File StepPi_reference_version_1.dat StepPi_reference_version_1.dat added
- File StepPi_reference_version_1_for003.dat StepPi_reference_version_1_for003.dat added
MAUS lattice for StepPi reference version 1 uploaded.
Updated by Rogers, Chris almost 9 years ago
Symmetric lattice slides v4. Conclusions:
The cooling performance is okay and it is really similar to a "production" lattice.
Updated by Rogers, Chris almost 9 years ago
I uploaded reference version 2:
- Changed mode to ++-- to avoid optical emittance growth issue
- Added cooling hardware
Beam should be set up to have constant beta in 4 T field:
- beta_trans = 333 mm
- alpha_trans = 0
- canonical angular momentum = 0
- p = 200. MeV/c
Updated by Rogers, Chris almost 9 years ago
Updated by Blackmore, Victoria almost 9 years ago
- File deleted (
As-built_coil_dimensions__positions_and_currents.pdf)
Updated by Blackmore, Victoria almost 9 years ago
- File deleted (
As-built_coil_dimensions_and_locations.pdf)
Updated by Blackmore, Victoria almost 9 years ago
- File As-built_coil_dimensions__positions_and_currents.pdf As-built_coil_dimensions__positions_and_currents.pdf added
Deleting old versions of magnet dimensions document to avoid confusion. Uploading version with diagrams and tables of dimensions & current densities.
(Credit goes to C. Rogers for spotting the swapping of current & current density in the FC's column -- now fixed)
Updated by Rogers, Chris almost 9 years ago
Symmetric lattice slides v5 uploaded...
Updated by Blackmore, Victoria almost 9 years ago
- File Alternative_Lattices.pdf added
Slides for this afternoon's meeting.
Updated by Snopok, Pavel almost 9 years ago
- File icool_vs_g4bl_comparison.pdf added
ICOOL vs G4beamline comparison for the reference design.
Updated by Blackmore, Victoria almost 9 years ago
- File Alternative_Lattices.pdf added
Blackmore, Victoria wrote:
Slides for this afternoon's meeting.
The above slides with slide numbers!
Updated by Blackmore, Victoria almost 9 years ago
- File Alternative_Lattices.pdf Alternative_Lattices.pdf added
Updated slides after today's meeting.
Updated by Snopok, Pavel almost 9 years ago
ICOOL vs G4beamline comparison for the reference design.
Updated by Rogers, Chris over 8 years ago
"Alternative lattice" files
Updated by Blackmore, Victoria over 8 years ago
- File DOE_Review_Lattice_Geometries.pdf added
Not-to-scale "drawings" of the lattices used for the plots in the DOE review document. Contains both the 'reference' and 'alternative' lattices, with current densities given for 200 MeV/c simulations.
Updated by Blackmore, Victoria over 8 years ago
- File deleted (
DOE_Review_Lattice_Geometries.pdf)
Updated by Blackmore, Victoria over 8 years ago
- File DOE_Review_Lattice_Geometries.pdf added
Updating 'DOE_Review_Lattice_Geometries' (deleted in item 32 so we avoid duplication), to include the aluminium absorber windows and helium windows that were added to the reference geometry.
Updated by Blackmore, Victoria over 8 years ago
- File StepPi_SimulationDescription.pdf added
- File Jaroslaw_Hunt_ReferenceLattice_v2.dat added
- File Rogers_AlternativeLattice.dat Rogers_AlternativeLattice.dat added
- File Rogers_AlternativeLattice_InputBeam.py Rogers_AlternativeLattice_InputBeam.py added
- File Snopok_ReferenceLattice.g4bl Snopok_ReferenceLattice.g4bl added
Adding note that describes the MAUS and G4BL simulations that made the plots for the DOE review document. Also adding the geometry files the note derives its numbers from.
The MAUS version used by C. Hunt (including all geometries and run scripts) has been uploaded to launchpad: lp:~christopher-hunt08/maus/maus_DOE_review_version
Updated by Blackmore, Victoria over 8 years ago
Updated to reflect final changes made to geometry before final submitted plots were created with the reference lattice.
NB: This replaces 'DOE_Review_Lattice_Geometries.pdf'
Updated by Blackmore, Victoria over 8 years ago
Latex files used to create the lattice geometry note
Updated by Blackmore, Victoria over 8 years ago
- File deleted (
Jaroslaw_Hunt_ReferenceLattice_v2.dat)
Updated by Blackmore, Victoria over 8 years ago
- File deleted (
DOE_Review_Lattice_Geometries.pdf)
Updated by Hunt, Christopher over 8 years ago
- File Step_3pi2_alt_15_1.dat added
Added the Geometry File used to generate the plots that were added to the DOE report. This file includes the Tracker He windows, but not the AFC Windows.
Updated by Hunt, Christopher over 8 years ago
- File DOE_Geomtry_File.dat DOE_Geomtry_File.dat added
File renamed more appropriately.
Updated by Blackmore, Victoria over 8 years ago
Updates made to the text (figures and tables remain the same).
Updated by Blackmore, Victoria over 8 years ago
Simulation description uploaded as MICE Note 450
Updated by Rogers, Chris over 8 years ago
- File fc_sim.tar.gz fc_sim.tar.gz added
Please find attached simulation files for the 6D cooling run which I presented as last slide on Tuesday
Updated by Rogers, Chris over 8 years ago
- File simulation_analysis.py simulation_analysis.py added
And analysis script...
Updated by Hunt, Christopher over 8 years ago
- File Step_3pi2_ref_8_1.dat Step_3pi2_ref_8_1.dat added
- File Conf_multi_Step_3pi2_ref_8_1.py Conf_multi_Step_3pi2_ref_8_1.py added
The most recent Step 3pi/2 geometry for the - settings, as presented at CM40.
Non-linear effects appear to be ruining the emittance near the downstream field flip. See the ++- setting for better behaviour.
Updated by Hunt, Christopher over 8 years ago
- File Conf_multi_Step_3pi2_ppmm_5.py Conf_multi_Step_3pi2_ppmm_5.py added
- File Step_3pi2_ppmm_5.dat Step_3pi2_ppmm_5.dat added
- File Conf_multi_Step_3pi2_ppmm_12.py Conf_multi_Step_3pi2_ppmm_12.py added
- File Conf_multi_Step_3pi2_ppmm_16.py Conf_multi_Step_3pi2_ppmm_16.py added
- File Step_3pi2_ppmm_11.dat Step_3pi2_ppmm_11.dat added
Adding the geometry and configuration files that were used to produce the plots presented by Jean-Baptiste at CM40 for the ++-- Setting of the reference design.
All using 200 MeV/c momentum positive muons and 6mm input emittance at the upstream tracker.
Geoemtry 5: Only Primary absorbers.
Config 5: Emittance_l = 0.004, alpha_l = -1.0
Geometry 11: Includes Secondary absorbers.
Config 12: Emittance_l = 0.020, alpha_l = 0.0
Config 16: Emittance_l = 0.004, alpha_l = -1.0
Updated by Rogers, Chris over 8 years ago
- File alternative_plots_vs_z.tar.gz added
- File reference_plots_vs_z.tar.gz reference_plots_vs_z.tar.gz added
- File simulation_analysis_v2.py simulation_analysis_v2.py added
Attached plots vs z
This is tracking of 10k particles. Alternative and Reference have primary absorber only. cuts are listed in simulation_analysis.log. Plots which Victoria asked for are beta_vs_z*, emittance_trans_vs_z*, bz_vs_z*
For reference I attach the simulation_analysis script I used to generate the plots. Let me know if there is a problem. I will try to clean up the plots vs input emittance and upload them next.
Updated by Rogers, Chris over 8 years ago
- File alternative_plots_vs_z.tar.gz added
- Assignee set to Rogers, Chris
Victoria spotted a problem, I screwed up the SS current by ~ 5%. I will pick up my P45 on the way out. Revised alternative plots vs z attached. Probably explains the mismatch the others were seeing if they used the correct SS currents. I fixed some other badness:
- I now start alternative and reference from the same point in the SS i.e. different point in global coordinate system.
- I added windows to alternative (but I don't have much Helium in the Helium volume and I have not run the geometry verification scripts to check that it looks okay)
Updated by Rogers, Chris over 8 years ago
Updated by Rogers, Chris over 8 years ago
- File emit_in_vs_.tar.gz emit_in_vs_.tar.gz added
the transverse emittance performance plots. I note that the alternative has a kink at highest emittance value, probably this means that the cooling is cut dominated here...
Updated by Rogers, Chris over 8 years ago
- File reference_radius_plots_vs_z.tar.gz reference_radius_plots_vs_z.tar.gz added
- File alternative_radius_plots.tar.gz alternative_radius_plots.tar.gz added
...and here attached the radius plots.
Victoria asked for 3 sigma, they didn't look so good so I made 95 % and 99 % radius plots as well. We should do something similar for emittance I think.
I included three aperture guides, SS (200.5 mm), RF (210 mm), FC (235.5 mm).
Updated by Blackmore, Victoria over 8 years ago
- File Paper-draft-0pt2.zip added
Latest paper version including plots so far (this is the whole zipped directory, so includes all root files from C. Rogers & C. Hunt to date)
Updated by Blackmore, Victoria over 8 years ago
- File MICE-Demonstration-Of-Ionisation-Cooling.pdf MICE-Demonstration-Of-Ionisation-Cooling.pdf added
Updated with latest plots.
Updated by Hunt, Christopher over 8 years ago
- File Conf_multi_Step_3pi2_ref_ppmm_19_em_6.py Conf_multi_Step_3pi2_ref_ppmm_19_em_6.py added
- File Conf_multi_Step_3pi2_alt_4_em_6.py Conf_multi_Step_3pi2_alt_4_em_6.py added
- File Conf_multi_Step_3pi2_alt_5_em_6.py Conf_multi_Step_3pi2_alt_5_em_6.py added
- File Step_3pi2_alt_4.dat Step_3pi2_alt_4.dat added
- File Step_3pi2_alt_5.dat Step_3pi2_alt_5.dat added
- File Step_3pi2_ppmm_5.dat Step_3pi2_ppmm_5.dat added
- File Step_3pi2_ppmm_11.dat Step_3pi2_ppmm_11.dat added
- File Conf_multi_Step_3pi2_ref_ppmm_18_em_6.py Conf_multi_Step_3pi2_ref_ppmm_18_em_6.py added
These are the configuration files and geometries that I was using to make the plots for the report. Please excuse the arbitrary numbering scheme. There was a system (two in fact - which is why they don't seem to make much sense). Numbers correspond as follows:
Step_3pi2_alt_4.dat - Alternative geometry, rematched by Jaroslaw, Primary absorbers only
Step_3pi2_alt_5.dat - Alternative geometry, rematched by Jaroslaw, Primary and Secondary absorbers
Step_3pi2_ppmm_5.dat - Reference geometry, Primary absorbers only
Step_3pi2_ppmm_11.dat - Reference geometry, Primary and Secondary absorbers
Conf_multi_Step_3pi2_ref_ppmm_18_em_6.py - Configuration file for Alternative Geometry 11, 6mm input beam
Conf_multi_Step_3pi2_ref_ppmm_19_em_6.py - Configuration file for Alternitive Geometry 5, 6mm input beam
Conf_multi_Step_3pi2_alt_4_em=6.py - Configuration file for reference Geometry 4, 6mm input beam
Conf_multi_Step_3pi2_alt_5_em=6.py - Configuration file for reference Geometry 5, 6mm input beam
Updated by Rogers, Chris almost 7 years ago
Corrections from dan kaplan (by hand)
Updated by Rogers, Chris almost 7 years ago
Corrections from Chris Booth.
Updated by Rogers, Chris almost 7 years ago
Comments from John Cobb:
Some comments after flicking through the figures: Figs 10 & 15: a) If, instead of dEps/Eps versus Epsin, you simply plot dEps versus Epsin, you should get a nice straight line (crossing zero at Eps_eqm). b) The cooling formula is given right up front of the paper. Should be compared on these plots, and if it disagrees, explain why. Figs 11 & 16 (and 7): Who cares about transmission per se? If you lose 20% (say) of high amplitude particles but increase the number in some acceptance, you've won. There will be muons with such high amplitudes that no realistic amount of cooling would ever bring them into the interesting acceptance. I would plot the before and after amplitude distributions (and perhaps their ratio), which would demonstrate both cooling and transmission on the same plot. jhc
Updated by Rogers, Chris almost 7 years ago
- File DEMO-paper_v1.3jhc.pdf DEMO-paper_v1.3jhc.pdf added
Further comments from John Cobb.
Updated by Rogers, Chris almost 7 years ago
Comments from Kevin by email and in attachment
Dear All, Some additional comments- minor I think except for the note in my earlier message. Best wishes, Kevin ________________________________________ From: Kevin Ronald Sent: 10 August 2016 10:25 To: chris.rogers@STFC.AC.UK; j.lagrange@imperial.ac.uk; j.pasternak@imperial.ac.uk Subject: Demo paper Hello All, It may be a little odd as the appointed referee, but I will send some more comments on the paper today- mostly very minor so far, but something is wrong in para 2 page 2 regarding radiation lengths and Z- If I missed this before I apologise. I think it should say ...material with low atomic number (Z) in which... Best wishes, Kevin
Updated by Rogers, Chris over 6 years ago
Hi: Here are some comments on Design and expected performance of the MICE Demonstration of Ionization Cooling Best, Don ***************** No mention is made of running with the downstream matching coil M1 off. Ref [1] is really just neutrino factories. For lepton colliders one might want to add [1A} C. M. Ankenbrandt et al.. Phys.Rev.ST Accel.Beams 2 (1999) 081001 Line 49 Actually the muon collider requires a transverse emittance of 0.025mm and a longitudinal emittance of 72 mm. See R. B. Palmer et al., arXiv:0711.4275 Formula 1 One might want to add the partition number, g_t, in the numerator of the first term to take wedge absorbers into account. See D. Neuffer, arXiv:1312.1266 Line 57 channel --> channel down to 3cm See D. Stratakis and R. B. Palmer, Phys.Rev.ST Accel.Beams 18 (2015) 031003 Figure 1 caption Kloe --> KLOE Ref [9[ now published as JINST 11 (2016) P05006 Ref [20] add IPAC-2011-MOPZ013
Updated by Rogers, Chris over 6 years ago
Should have noted, those comments in note 67 are from Don Summers (U. Mississipi)
Updated by Rogers, Chris about 6 years ago
- Status changed from Open to Closed
- % Done changed from 0 to 100
The paper was accepted