PHOTON SCIENCE

atten    moves the absorber
         atten umber

br       moves to h k l
         br h k l

ca       calculates the angles from h, k and l values
         ca h k l

hklscan  scans in rez. space
         stops at the last point of the scan without return
         hklscan h_start h_stop k_start k_stop l_start l_stop n_points time

hscan    scan h
         stops at the last point of the scan without return
         hscan h_start h_stop n_points time
kscan
lscan

hkmesh   mesh hk-plane in rez. space
         hkmesh h_start h_stop h_points k_start k_stop k_points time
         l is fixed to the current value
         h-scans at different k values
hlmesh
klmesh

lupphi   line up phi in relative units
         returns to the starting point of the scan
         lupphi rel_startangle  rel_stopangle n_points time
lupchi
lupom
luptt
luppsi

th2th    theta-2theta scan
         relative scan, return to start

mitana   puts the analyzer in position
ohneana  take the analyzer out

or0      primary orientation reflection
         take current angles, no security - if or0 = or1 q-space not
         accessible
         or0 H K L
or1      secondary orientation reflection

or switch switches or0 and or1
         usage: switch

wh       shows the position in rez. space and angles
         remembers the numbers for the current H K L as HH KK LL

wi       where is
         wh motor_name

anmax    moves th2th, omega, two-theta to maximum or midpoint
ancen
ommax
omcen
ttmax
ttcen
phimax
phicen
chimax
chicen

freeze   fixes phi or psi in fixed phi or fixed psi mode at a
         specified value
         freeze angle

unfreeze releases the freeze condition

grawait  waits for a defined time
         grawait time

newfile  choose a new name for data files
         requires 'run newfile_par.gra' in the spectra_ini.gra
         newfile name

go       issue this command after stopping a scan or macro


a few more commands:
--------------------

cou      read the counters
         cou time

hplot    print the graphics display

lup      line up a single motor in relative units
         returns to the starting point of the scan
         lup motorname rel_startposition  rel_stoposition n_points time
         sample angles are: tt, om, phi, chi

lupa     line up a single motor in abolute units, see lup
         returns to the starting point of the scan
         lup motorname abs_startposition  abs_stoposition n_points time

mo       move a motor to an absolute position
         mo motorname abs_position

mva      move a motor to an absolute position
         mva motorname abs_position [relative speed, (0..1)]
         with option of reduced speed
         sample angle names are: tt, om, chi, phi

mvr      move a motor relative to the current position
         with option of reduced speed
         sample angle names are: tt, om, chi, phi
         mvr motor rel_position [relative speed, (0..1)]

moom     move omega to absolute position
         moom angle

mott     move 2theta to absolute position
         mott angle

cvslit1  move vertical center of slit1
chslit1       horizontal center
         chslit1 position

dvslit1  move vertical gap of slit1
dhslit1       horizontal gap
         dhslit1 position

ascan    scan a single motor in absolute units
         ascan motorname abs_startpos abs_stoppos n_points time

dscan    scan a single motor in relative units (see lup)

setlat   input of lattice parameters and angles of the sample
         setlat wait for questions

setmode  choose the scan mode: bisecting, fixed psi, const. plane, fixed phi
         setmode 1-4, or wait for questions

set_temp   changes the setpoint of the temperature controller  (like "te")
           optionally specify a ramp-rate
           set_temp setpoint [ramp-rate (degree/min)]

temp_setup  choose a temperature controller, no arguments

motor_setup resets all motor parameter, except motor positions
            ! use only for sartup of experiment !

getpeak  writes ssa_prameters plus current temperature into a file
         getpeak filename

getangles writes all current angles into a file
getq                 current q-position


some useful hints for the spec user:
------------------------------------

p [argument] in spec corresponds to *=[argument] in Spectra

start macros by: run macro_name.gra

if ssa is on:
ssa_peak_x, ssa_midpoint, ...
are assigned to peak maximum, midpoint , ...

set_mode ... ASN 1-4
param=

scan/slit=(slt#,cx/cy/dx/dy)



names of Spectra-menues:
________________________

align    aligning the beamline

centre   centering a reflection

ubm      ub-matrix related stuff
         lattice const., const.-plane vectors, etc.

scan/q   the various scans
scan/two
scan/om
scan/chi
scan/phi
scan motorname

slit1    move the slits 1, 2 and detector slit
slit2
slitd

mca      operate the multi channel analyzer

kippa    move the kippabsorber