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                       E895 Minutes

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Date: 19 March 96

Present: Gulshan Rai, Doug Olson, Thomas Wienold, A. Dean Chacon,
         Daniel Cebra, Jerry Chance, Juan Romero, Tom Case


GR: - this is the first official E895 meeting at LBNL since the 
     end of the beam time. From now on the meeting will take place 
     each tuesday at 3 pm. 

    - I would like to welcome Lee Schroeder as official member of 
     the E895 collaboration
     
    - DATA COPYING: Gulshan reported that the tape copying has 
     started at Stony Brook. He pointed out that additional help 
     is needed to increase the copying speed. The copying process
     should be shared by all institutes. Davis (D.C.) and LBNL are 
     willing to do some local copying, other 'volunteers' are welcome. 
     The LBNL tape drives will be shipped back from Brookhaven. 

TC: - TAPE MEDIA: it was discussed whether the new DLT (digital linear 
     tape) might represent the appropriate storage media for future 
     data taking and/or distribution media. Advantages: 
     capacity: 20 Gbytes/tape, higher I/O rates, SCSI connection,
     price: around $3k.

GR:  This question has to be discussed on a collaboration wide level.
     
GR: - COMPUTING: meanwhile the copying is going along we should start 
     with the data processing. I've not yet received a response from 
     CMU who was interested in the processing. Other possibilities are 
     processing at LBNL on the training room machines which are now still 
     in use for EOS(BEVALAC) pass1.

DO: - we have received 3 years to use those machines. That was last year 
     so there would be roughly 1.5 - 2 years left from now.

GR: - on the longer term we could consider using the PDSF HP's 
     which will be installed at LBNL around April. I will collect 
     information and try to discuss this with Hans Georg.

DC: - Davis is definitely planning to switch to HP's

TC: - REPORT ON FIELD MAPPING: TC reported on the status of building the 
     field maps from the data sets taken with the ultrasound field 
     mapping device. He explained the problem during the measurement 
     (faulty ground destroyed the 'good' device). His major problem 
     is the loss of phase locks in the device which led to a jittering 
     in the position of about 1cm. Using consistency arguments he was 
     able to correct for such cases most of the time. Nevertheless there 
     are still bad data sets on which he has to work on. Using the 
     auxiliary port of the device also introduced a temperature dependence. 
     This could fortunately be corrected with information from the hall 
     probe. The resulting postion resolution is around 1mm.


                                        prepared by Thomas Wienold