Our goal for the next several months is to perform a first-pass extraction of the helicity-dependent response functions in time for the DNP meeting in October. The outline below lists most of the analysis tasks that have been identified so far and assigns persons to them. If two people are listed, the first has primary responsibility for the task, while the second is a consultant that should provide guidance and expertise. The goal is a target date chosen to ensure that the first-pass analysis will be ready in time for the DNP meeting. The completion date will be entered when a report becomes available.
A report should be written on each task or closely related group of tasks. Ideally these reports should explain both the principles and the results in sufficient detail not only to be useful to the collaboration but to provide drafts of the relevant sections of the developing Ph.D theses. The reports should contain tables and figures wherever appropriate. Much of this information will be needed later for talks, theses, and, ultimately publications. If we take the time to carefully document the progress of the analysis, later writing will be easier, the collaboration will be better informed, and discussions of the outstanding issues should be more efficient. When a report is ready, send the URL to jjkelly@physics.umd.edu and it will be linked to the appropriate item.
| persons | goal | date | task | status or URL |
| Jones | 8-Aug | 11-Aug | survey data | survey report |
| Chai | 8-Aug | bpm calibration | mostly done, needs report | |
| Roche | 15-Aug | 2-Nov | pointing | mispointing report |
| Chai,Krishni | 15-Aug | detector offsets | ||
| Chai,Krishni | FPP alignment | mostly done, needs report | ||
| Jones,Nilanga | 15-Aug | beta optimization, tc_cor | ||
| hadron arm | ||||
| Chai,Nilanga |
ytgt, theta, phi optimization |
mostly done, needs report | ||
| Roche,Nilanga | delta scan | |||
| electron arm | ||||
| Chai,Nilanga | ytgt, theta, phi optimization | mostly done, needs report | ||
| Roche,Nilanga | delta scan | |||
| Jones, Roche | 21-Sep | databases | notes, current list: hdr_db.ps | |
| Mitchell | 5-Aug | compilation of energy measurements |
| persons | goal | date | task | status or URL |
| Jones | 1-Sep | bcm calibration | report_on_bcm.ps | |
| Roche | 5-Aug | 2-Nov | luminosity vs. current, stability of monitor | luminosity report |
| Roche | 13-Feb | trigger efficiency | scintillator efficiency report | |
| Jones,Michaels | 15-Aug | 8-Aug | deadtime issues | draft: edtime.ps |
| detailed diagram for trigger, with timing and widths | ||||
| model of electronic and computer dead times | ||||
| procedure for binning dead time versus strobe rate | ||||
| analysis of electronic dead time data | report_on_deadtime.ps | |||
| comparison of trigger types | ||||
| Roche,Jones | 15-Sep | 6-Oct | particle ID | needs report |
| optimize beta versus ADC | ||||
| test ADC1 versus ADC2 | ||||
| rejection of protons by aerogel | ||||
| electron ID | ||||
| Chai,Jones | 15-Sep | VDC efficiency | single track for DNP, multiple later | |
| wire efficiency | ||||
| multiple tracks | ||||
| reconstruction efficiency | ||||
| rate dependencies | ||||
| Chai,Jones | 20-Sep | acceptance issues | ||
| aperture model | ||||
| compare acceptances, distributions with Monte Carlo | ||||
| elastic cross sections | ||||
| pion production with and without collimators | ||||
| Roche | 30-Sep | stability | needs report | |
| compare run periods | ||||
| dependence upon current |
| persons | goal | date | task | status |
| Escoffier | time dependence | |||
| systematic errors | ||||
| 6-Oct | difference between h+ and h-? | insignificant | ||
| comparison with Moller | ||||
| results from spin dance |
| persons | goal | date | task | status |
| FPP efficiency | ||||
| Chai,Brash | false asymmetry | false_asymmetry_report | ||
| dependence on delta | ||||
| Monte Carlo model | ||||
| Roche | background | |||
| Roche | sensitivity to current asymmetry | |||
| Roche | database of polarization measurements | |||
| Jones | 15-Sep | polarization of radiative tail | ||
| Strauch | feasibility of traceback to target |
| persons | goal | date | task | status |
| Jones | 30-Aug | debug fitting procedure for phi dependence at FPP | ||
| Jones | 30-Aug | expand procedure to include more response functions | ||
| Kelly | 10-Sep | finish analysis of sensitivity to multipoles | ||
| Kelly | 1-Sep | 22-Sep | obtain SAID multipoles | available in epiprod version 4.2 |
| Chai,Roche | 30-Sep | extract response functions from data | first pass, helicity dependent, for DNP | |
| Jones,Kelly | iterate Monte Carlo |
| persons | goal | date | task | status |
| Chai,Kelly | determine which can be extracted | |||
| Chai,Kelly | sensitivity to systematic errors | |||
| dependence upon W, Q2 | ||||
| comparison with theory |
last revised 10/27/00