Difference between revisions of "January 30, 2015 - Mott Group Meeting"
Jump to navigation
Jump to search
| Line 59: | Line 59: | ||
==Simulation progress== | ==Simulation progress== | ||
| − | == | + | ==Sibling thickness measurement status== |
| − | + | ;FESEM measurements | |
| − | + | : profile of each target | |
| − | + | : profiles of 2-3 targets multiple foil locations (foil + preparation technique) | |
| − | + | ;Sibling list | |
::0.050 um, 6809-B (done) | ::0.050 um, 6809-B (done) | ||
::0.225 um, 7029-B | ::0.225 um, 7029-B | ||
| − | ::0.350 um, 5613-A | + | ::0.350 um, 5613-D (changed from A) |
::0.500 um, 5275-C | ::0.500 um, 5275-C | ||
::0.625 um, 7028-B | ::0.625 um, 7028-B | ||
| Line 72: | Line 72: | ||
::0.870 um, 3057-C | ::0.870 um, 3057-C | ||
::1.000 um, 5385-B | ::1.000 um, 5385-B | ||
| + | ; Notes | ||
| + | * FESEM resolution is about 1.5 nm | ||
| + | * Sibling list of foils used (note, 0.05um foil 12 does not have sibling and both 0.35um foils 8 and 14 have same sibling) | ||
| + | * Images saved as TIFF (highest quality of TIFF, BMP, JPEG) | ||
| + | * [http://imagej.nih.gov/ij/ ImageJ] is free image analysis software hosted by NIH | ||
Revision as of 12:57, 30 January 2015
Folks,
Let's meet next Friday, January 30th at 1:30pm EST in TL-2236. Some topics are listed below.
In the meantime, the Run 1 wiki has been updated run a chronology of events/logbook entries and the final on-line spreadsheet of runs and on-line results: https://wiki.jlab.org/ciswiki/index.php/Run1_-_January_2015
Blue Jeans and Wiki
Toll Free Phone number: 1-888-240-2560 Int'l Call Phone numbers: http://bluejeans.com/numbers Meeting ID: 175023762# Web connection for desktop sharing: http://bluejeans.com/175023762 Wiki: https://wiki.jlab.org/ciswiki/index.php/January_30,_2015_-_Mott_Group_Meeting
Lessons learned from Run 1
- Small aperture mouts may be impractical. Thin foils on backing on larger aperture mount seemed okay.
- Improve capability for beam characterization (emittance, momentum, energy spread, bunch length)
- VWien+Solenoids more effective than HWien
- Make measurement, analysis, data logging as automatic and convenient as possible
- Learn how to analyze target video on-line and save for off-line
- Replace viewer with either gridded chromox or YAG crystal
Divvy-up analysis and summary writing
- Analysis systematics
- Energy and Time Cuts
- Low and High Threshold
- Polarimeter Systematics using "nominal" beam
- Deadtime
- Beam current
- Target position
- Beam position : 0.22um(1) and 1um(15)
- Dump dipole
- Polariimeter Systematics using "off-nominal" beam
- PITA
- Spin Dance
- Spot size
- Cavity phase
- Beam measurements
- Momentum
- Harp calibration
- Emittance
- Energy spread
- Target Thickness Extrapolation
- High Threshold Foils : 2,4,5
- Low Threshold Foils : 1,8,12,13,14,15
Goals/plans for beam test opportunity : Monday Feb 9 + Tuesday Feb 10
- Test hardware TOF veto at 31MHz and 62MHz (6 hours)
- Test FADC without TDC (2 hours)
- Test FADC delayed operation (2 hours)
- Measure emittance with Run 1 conditions (3 hours)
Simulation progress
Sibling thickness measurement status
- FESEM measurements
- profile of each target
- profiles of 2-3 targets multiple foil locations (foil + preparation technique)
- Sibling list
-
- 0.050 um, 6809-B (done)
- 0.225 um, 7029-B
- 0.350 um, 5613-D (changed from A)
- 0.500 um, 5275-C
- 0.625 um, 7028-B
- 0.750 um, 5134-B (done)
- 0.870 um, 3057-C
- 1.000 um, 5385-B
- Notes
- FESEM resolution is about 1.5 nm
- Sibling list of foils used (note, 0.05um foil 12 does not have sibling and both 0.35um foils 8 and 14 have same sibling)
- Images saved as TIFF (highest quality of TIFF, BMP, JPEG)
- ImageJ is free image analysis software hosted by NIH