Download Powder Diffraction Beamline - User Manual

Fri Apr 9 00:13:53 2004 ./data/he1716_eu100b_295_1.dat
46,000
44,000
42,000
40,000
38,000
36,000
34,000
32,000
30,000
28,000
Counts
26,000
24,000
22,000
20,000
18,000
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
0
-2,000
4
5
6
7
8
9
10
11
12
13
14
15
16
17
2 Theta
10. Sample Environment Ancillaries Control
Operating the Cryostream 700
The Cryostream is used for controlling the temperature of capillary mounted samples in the 80 – 500 K range.
There are several options for operating the cryostream, these include:
1. Set temperature and ramp rate manually for each new temperature.
2. Set temperature programme via a LINEAR or TABLE SCAN
3. Set temperature programme via a PROFILE (otherwise known as an on-the-fly scan)
Notes
 The ramp rate can be set to any value between 1 to 360 K/hr.
 A plot of the progress of the temperature programme and the current temperature status can be obtained by
selecting ‘Plot’.
 Note that this is a real-time plot and will not display values achieved before the plot is launched.
Cryostream Manual Set
 Set new target temperature by typing in “Ramp target” and the speed with which this should be achieved in
“Ramp rate”.
 Select “Start ramp” to action change to new temperature.
 Select “Pause” to temporarily hold current temperature during ramp. Select “Resume” to return to rampingto-target temperature.
 Select “Stop ramp” to halt ramp-to-target and hold temperature at current temperature.
Cryostream Temperature Step Scan
A temperature step scan programme should be used where data collection should occur only when the
temperature has reached, and is held at, a target temperature.
 Type in desired “Ramp rate” for scan, within Cryostream dialogue.
 Refer to, and follow, notes on setting up a 1-D linear or table scan described from page 13.
Note
The Cryostream should not require a settling time for the temperature to be
achieved prior to data acquisition, however, the user may choose to input one.
Document:
Version no:
7864 Powder Diffraction Beamline - User Manual
5.1
Date: 7/3/2012
Page: 21 of 76