PSI µSR Data Archives (ftp server and AFS file system) 
The µSR Facility at PSI maintains different kinds of archive of
the data collected on the Facility instruments, as well as backup copies
on tape or CDs.
Note that this is not intended to
exempt the users from maintaining their own data archives.
It is firm Facility
policy that all users must make their own backup copies of data they have
taken at PSI.
For this purpose, data files can be retrieved from either the AFS file system or
the µSR ftp server.
A new
utility to search for
specific data files
is now available (written by Z. Salman, and
completed by A. Raselli)
µSR data in the AFS file system
The AFS file system at PSI contains usually only the data of the present year.
These data can be retrived either from all Unix/Linux machines at PSI or
world-wide by using an appropriate AFS client.
The data are saved in the directory:
/afs/psi.ch/project/bulkmusr/data/aaaa/
where aaaa represents the instrument.
The temperature monitor files are copied and the end of each day also in the AFS
file system, as well as the "tlog" files (monitor files for individual runs)
Directories:
/afs/psi.ch/project/bulkmusr/mon/aaaa/ and
/afs/psi.ch/project/bulkmusr/tlog/aaaa/
µSR data in the ftp-server
Since 2002, a ftp-server containing all the known PSI µSR-data is
available.
A common account is available for all users:
-
ftp server: ftp.psi.ch
-
account name : musrr
-
the password can be obtained from your instrument scientist
Accessing the ftp server
The ftp server can be accessed:
-
either directly by a ftp client (for example use the command ftp
from
Unix) by specifying the ftp name, account and password.
For example: ftp ftp.psi.ch . You will be prompted
to enter your account and password.
-
or directly from a browser by typing the following address:
ftp://musrr:******@ftp.psi.ch
whre ****** represents the password
Once in the ftp-server, the muSR-data can be retrieved in the directories:
/data/YYYY/aaaa/dlog/NNNN/ (from
2010 the directory dlog is replaced by
tdclog) where:
-
YYYY represents the year
-
aaaa represents the area i.e. either ltf,
pim3 (for GPS), mue1, mue4
and pie3
-
and NNNN is the number of the first run in the directory
(each directory contains 100 runs)
Temperature log files (i.e. temperature log recorded during a specific
run) are obtained in the directories:
/data/YYYY/aaaa/tlog/
(see the definitions of YYYY and aaaa just
above).
Temperature monitor files (i.e. temperature log grouped for an entire day) are obtained in the directories:
/data/YYYY/aaaa/mon/
(see the definitions of YYYY and aaaa just
above).
Lists (sorted or not) of the runs saved for a spefific year can
be found in the directory
/list/
Opening the zip-files on a Unix or Windows computer
All the files are zipped individually.
Use your favorite unzip software to unzip the requested files.
The muSR-data zip-files contain the data files with the extension ".bin"
(binary format with 512 bytes/record).
The monitor-files contain the monitor files with the extension".mon"
(ASCII format).
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