Notes from Main Injector/Recycler Group Meeting
Wednesday, 11 September 2002
Bruce C. Brown

Introduction: Peter Wilson from CDF has joined the Recycler Ring
Recuperation effort.  He will be "our" contact to the BD support
groups for all Instrumentation upgrade issues.  [Operational issues
will continue to be managed as they have been].

Shekhar:  Some Emittance Plots

    Plots from elsewhere in the division were shown.  Histograms of
transverse emittance of pbars in various Fermilab rings for shots both
before and after the Accumulator Shot lattice introduction.  In both
cases, an emittance growth of x2 - x3 from MI to Tevatron were
reported.

Warren Schappert (RFI): Beam Position Electronic Developments

    Results from using Echotek Digital Receiver cards to record
signals from the strip line which we will dedicate to the Beam Line
Tuner were shown.  This is a preliminary look using a local interface,
 data acquisition and analysis.  Data are recorded with
14-bit sampling at 53 MHz.  Digital filtering is used to find peaks
for the 2.5 MHz bunches.  Results were shown for 4 channels -
Horiz A&B, Vertical A&B.  The Vertical A channel showed anomalous
results for the first 10's of turns.  The position (A-B/A+B) looked
very reasonable for horizontal and had reasonable result for the
vertical except for that which was due to the Channel A anomaly.  Tune
spectra were created using FFT for both and the results were
reasonable.  Coasting beam with a barrier bucket was recorded and the
signal from the barrier buckets was observed [no detailed analysis
done on it.]

    The to-do list includes completing an ACNET interface which will
ship data to an existing program which Guan Wu will modify and capture
of raw data from PBAR injections. Need to schedule data capture in
next couple of days.  ACNET interface will also be complete in next
week or so.

Dan Broemmelsiek [RR Machine Coordinator]: Study Plans Plus....

-Chandra Bhat will be doing RF Studies
-Cons will tun up transfer line 
-Proton Studies including heating rate, stacking, longitudinal emittance
   growth issues, TBT Lattice measurements.
-We will practice Pbar transfers from the bottom of the stack with the 
   goal of making them routine.
-BLT measurements, development, and calibration.

We also need to add Recycler Shot SDA definitions including settings 
for correctors in the beamlines.

Major work is planned for/with R6 to provide improved RF operation.
These will require many changes including likely BPM timing changes.
Goal include reduction of DC beam creation during transfers and
re-bunching at 2.5 MHz of beam stored in barrier buckets.  These well
be developed using protons with the goal of applying them to pbars.

Shekhar:  

WWW developments.

A new person will be identified soon to assist in maintenance of MI/RR
web pages.  The www-recycler.fnal.gov page will be resuscitated and
added to in lieu of the many RR links on the MI page
(www-fmi.fnal.gov).  Shekhar will continue to update them on the MI
page until help arrives.  Information for display on these pages
is/will be solicited from all of us.

Upgrade Instrumentation and Software:

A list of proposed instrumentation and/or software upgrades for the
RRR (Jan 03 time frame) are needed by Friday.  Requirements and scope
documents required by next Wednesday.