Log entry time 15:43:35 on January 16, 1998

Entry number 10

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			 Fpi Data Analysis 
			 
			    D. Mack 
			    
		last updated 1/16/98  (maybe)

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Our long term physics goal is the extraction of Fpi, but that requires absolute 
measurements of separated response functions and is 1-2 years away. We can start
tackling ratios almost immediately. Pieces of physics and names tentatively 
attached to them are as follows:

Fpi		  Volmer

g_piNN	          Vansyoc

D-/D+ ratios      Ketevi, Hamlet and Vardan (Yerevan)

D+/H+ ratios      ANL? Gaskell? Avery?

12C-/12C+ ratios  Ent??


*********************
NEWS: 
*********************

A new korean student has arrived to help with the analysis, Ilkyoung Shin. I 
have some ideas about how to keep him busy but suggestions are welcome. 


First meeting of D-/D+ analyzers took place Thursday Jan 8 (HAMLET, KETEVI, 
MACK). Partition of tasks as follows:

1. Short write-up on the D-/D+ physics goals: MACK

2. contribute to replay_1: All (eg, Ketevi-optics, Hamlet-Shower counter, Mack-
			   documentation and surveys)

3. Think about cuts: HAMLET

4. First look at replay_0: (HAMLET)

5. Distribute copies of run sheets: (MACK)


SHORT TERM: SHOULD COMPLETE BY FEB 1, 1998:

********  
General
********

Note: Replay_0 is considered to be the existing muddled collection of oct-dec
97 online and Ifarm based .hbook, .txt, and .rzdat files. 

Complete Fpi experiment documentation                   MACK (IN PROGRESS)
(bscopesX,energy measurementX,scan run sheets,paper
copies of logbook) 

Complete oct97.kinematics file                          VANSYOC

Replay_1 using latest matrix elements,                  MACK, VANSYOC
kinematics data base, histogram definitions,
and online analyzer. 

Run overview table to supplement oct97.kinematics.      VANSYOC (IN PROGRESS)

Copy of Fpi logbook (no run starts) to every analyzer.  ???

Set up Fpi analysis logbook (electronic)		VOLMER (IN PROGRESS)

*******************
Computing Resources
*******************

Accounting of resources used/needed:
how many GBytes of raw optics data,
how many Gbytes of raw physics data,
how many Gbytes of non-skimmed coincidence ntuples,
how many Gbytes of Fpi disk viewable from ifarm,
how many MBytes of .hbook files,
processing speed of analyzer in Hz on some platform,

*******
Optics
*******

"Ketevi Dec 97 SOS1" matrix elements 			KETEVI
installation in online analyzer.

Preliminary "Volmer Dec 97 HMS100" Matrix 		VOLMER
elments and install in online analyzer. 

note: Both sets are preliminary in the sense that there are mm-level offsets 
which are not yet accounted for (due to beam steering, solid target positions, 
spectrometer centers of rotation, spectrometer optical axis pointing, and 
perhaps some others).  Good fits in the HMS presently require forbidden matrix 
elements, so those fits are more likely to change.  The absolute P0 of both 
spectrometers is also not known at the 10-3 level. The P0 offset in the SOS 
may be even larger. What Jochen and Ketevi have showed me so far has good 
resolution with only minor residual systematic dependences where there 
shouldn't be any. Despite the caveats expressed above, they are probably the
best set of matrix elements that have ever been generated for either spectrometer. 

********************** 
Detector Calibrations
********************** 

check hodo and Pb glass track offsets and allowed slop  ???

Improve TOF calibrations                                ???

WC t-to-d maps for entire run, updated as needed        ???

Check npe calibrations for sos, hms gas cerenkovs       ???

Coincidence time setup: improve resolution, track        MACK
drifts?

Implement better Pb glass calibrations                  HAMLET (COMPLETE)

****************** 
Analyzer Upgrades
****************** 

Enable FR corrections and check.                         ???

Check dE/dx corrections and put into .hbook histos.       ???
If corrections are large then put into ntuples as well.

Fix root cause of all reported crashes. Make proactive    VOLMER
fixes to code with similar problems. 

Fix problem wherein coincidence histos were incremented   VOLMER
by strig and htrig events. 

Analysis and summary of luminosity scans.  

Familiarize students with the test file. 

Define appropriate histos for elastic runs

Fix any problems in calculation of Phi_x 

************* 
Fpi Web Site 
************* 

Put this "Analysis To Do" list on the web page               MACK (complete)

Need an analysis bulletin board with some hclog-              VOLMER (in progress)
like features                               

Scan Run Sheets make them web-viewable                        ???, VOLMER 


*************** 
old Misc. to do
*************** 

Cryotarget documentation for configuration 1997.  (IN PROGRESS) DUNNE

Install writable CD drive in counting house.

Write specifications for response function fitting code. IN PROGRESS (JLAB/ODU TEAM)

Measure dead-time versus trigger rate with new system.
 
 
 
 
LONG TERM: NO FIXED COMPLETION DATE

********* 
Physics
********* 

Generate complete list of kinematics and reactions 		???
for distribution to interested theorists


********************** 
Detector Calibrations
********************** 

4/6 tracking

fix single stub residuals

check for position dependence of gas Cer npe  

get event display up and running

understand WC efficiency rate dependence


*************** 
MISC. ANALYSIS
*************** 

improved charge calibrations

muon rejection cuts, etc.

optics upgrades

better absolute beam energy determination

Monte Carlo

luminosity summary

REDUCE software

************
OPTICS
************
recheck convergence of hms delta matrix elements when FIRST transforming to the
true delta focal plane

****************** 
SYSTEMATIC SURVEYS
****************** 

(mostly related to better understanding of beam energy, angle offsets, etc.) 

MM in p(e,e'pi+)n:  mean, sigma, mean vs xpfp

MM in d(e,e'pi)NNs: mean, sigma

MM in p(e,e')p

MM in p(e,p)e

Opening angle in p(e,e'p)

Theta_pq in p(e,e'p)

Missing Momenta Px, Py, Pz in p(e,e'p)

SOS sieve reproducibility survey

HMS sieve reproducibility survey