Scheduling beamtime:
Beamtime will
be scheduled by the GCPCC management. The schedule will be sent to
the institutional representatives. It is the institutional representative's
responsibility to disseminate scheduling and other information within their
institution. At present the schedule will provide each beamline share
with 2 periods of beamtime per cycle. As part of our funding agreement
with the NIH 25% of the beamtime is available to outside (non-GCPCC) groups.
Researchers at each institution should decide how to allocate their institution's
beamtime. Institutions which wish to trade beamtime may do so and
should make the arrangements between themselves. If the beamtime
can't be used please notify us as soon a possible so that it can be reassigned.
Only
the institutional representatives should contact the beamline manager,
Henry Bellamy: hbellamy@lsu.eduÝ (please cc Bob Fox fox@bloch.utmb.edu)
to indicate if the allocated beam time will be used and by whom.Ý Please
contact Henry at LEAST 7 days before scheduled beam time. If your
experiment has special requirements or unusual features please give us
as much notice a possible.
Beamtime
will start at 1:30 pm on the first day assigned to you on the
schedule. Beamtime will end at 10:30 am on the morning after the
last day assigned to you on the schedule. An exception is when the
day after your beamtime is a "studies" day. Studies days are used
by the accelerator group for testing and maintenance and user beam will
end at about 7 am. The period between groups is used by the
beamline staff for maintenance and alignment. You may continue to
back up and process your data after 10:30 but you should be finished with
data collection by then.
Ý
Administrative
matters:
All users who
will visit CAMD must take the radiation training and test online at LEAST
7 days before visiting CAMD. The test can be taken on line at:
http://camd.lsu.edu/msds/safety_pages.html.
You must have taken, and passed, this test to receive a dosimeter and an
access card. Please contact the CAMD Safety Officer, Dr. Lorraine
Day, day@lsu.edu, and cc Henry Bellamy, hbellamy@lsu.edu, at LEAST
7 days before your visit with an e-mail listing the substances to be brought
to CAMD and the species they are from. Any hazards should be listed,
if there are no hazards you should state that. List any heavy atom
compounds and the amounts to be brought to CAMD. State that
you will take all potentially hazardous materials with you when you leave
CAMD, and do so. At present we are not set up to accept biohazardous
samples. No material classed as P3 or P4 (or meeting the standards
for those classes) under NIH guidelines may be brought to CAMD. P2
material should be so identified in the form sent to Dr. Day. In
the e-mail to Dr. Day include a list of all the people who will be coming
to CAMD. Unlike the DOE rings there are no special requirements for
non-citizens at CAMD. Dr. Day will arrange for a dosimeter
to be issued to each person and for each person to receive an access card
for the electronic door lock system. It is necessasary to have an
access card to enter the experimental hall. A card is also required
to enter the area outside the hall after 6 pm and on weekends. There
is a $10.00 deposit for the access card and you keep the same card as long
as you are associated with CAMD. You must wear your dosimeter whenever
you are in the experimental hall. You will be assigned a storage
drawer for you dosimeter and you should leave it there when you are not
wearing it in the experimental hall. Do not take the dosimeters home
with you.
Directions
to CAMD:
By Car:
Take Interstate 10 to Baton Rouge and exit at College Avenue (exit 158).
If you are coming from the west (downtown Baton Rouge) turn left on College
Ave. If you are coming from the south (New Orleans) turn right on
College Ave. Follow College Ave until it ends at Jefferson Hwy. (about
1.2 mi.). Turn right and go about 3/4 mi. CAMD is the large
white building in the middle of a field on the right. Note; CAMD
is NOT on the LSU campus, do not follow the signs on I-10 pointing to LSU.
By Plane:
Fly to Baton Rouge Metropolitan Airport (BTR). Exit the airport on
Veterans Memorial Blvd. and turn left. Go about 0.7 mi. to Harding
Blvd. and follow the signs for Interstate 110 south. After about
6 miles I 110 merges with I-10. Take I 10 east about 2.5 mi. to the
College Ave exit (exit 158). Then follow the directions above to
get to CAMD. Note that it may be significantly cheaper to fly into
New Orleans. The New Orleans airport is about 70 miles away from
CAMD.
When you get
to CAMD you may park anywhere, there are no assigned spaces.
Motels:
Two possibilities
are:
Extended Stay
America (which does not require extended stays) 225-201-0330, 6250 Corporate
Blvd.
Quality Suites
225-293-1199, 9128 Bluebonnet Centre Blvd. (special rate if you say
you are affiliated with LSU).
Data Collection
Equipment:
The beamline
is equipped with a MAR Research CCD detector mounted on a
dtb (desktop beamline) base. The ccd has an active area 165
mm in diameter and a 76 micron pixel size. The system is optimized
for 1 Å radiation but works well over the full range of wavelengths
available on the CAMD PX beamline. The dtb base provides motorized
adjustment of detector distance and also a theta motion for raising the
detector for collecting high resolution data. There is only
a singe axis for data collection, which is horizontal, but there is a "chi"
motion which can be used to help mount the crystal. Data collection
is controlled by a program supplied by MAR research which allows automated
data collection. (Automatic wavelength changing is not yet implemented.)
For more information about the CCD and dtb see:
http://www.mar-usa.com/products.html#products
Cryocooling is provided by a Oxford Instruments CryoJet system with automatic refilling of the lN2 Dewer. Data can be collected at user-selectable temperatures down to 100 K. Liquid nitrogen for the cryosystem is provided from a large Dewer outside the hutch which will be refilled by the beamline staff. The large Dewer has an outlet that can be used to obtain lN2 for crystal freezing, refilling shipping Dewers etc.
User Area Equipment:
Outside the
hutch there is a set of benches and desks which form the user area.
There is a bench with a microscope for crystal mounting and an incubator
for crystal storage. The incubator temperature is adjustable between
0 and 40 °C. Users should who want to use it should turn it on
and set the temperature to suit their needs. The beamline has
a supply of small Dewers, several goniometer heads and a modest supply
of cryotools.
In general
users should bring their own cryotools so that they know they will fit
the pins they are using. If your cryopins are not from Hampton either
contact the beamline staff in advance or bring your own magnet as they
may not fit the Hampton magnets we have at the beamline. We
have a storage Dewer at the beamline that can be used for keeping samples.
If you want to keep a sample at the beamline after you leave talk to the
beamline staff first, we don't want to have extensive long-term sample
storage at the beamline.
Computers:
The beamline
is equipped with 3 PCs running Linux. We will be adding at least
one more system. One system (master.px1.camd.lsu.edu) is dedicated
to controlling the beamline and is used by users only to change the wavelength
and for fluorescence scans for MAD data collection. At present the
fluorescence scans will be done by the beamline staff. Another
system (marpc1.px1.camd.lsu.edu) controls the data collection system.
Instructions for data collection are provided in the section of that name.
Data processing and data backup are done on tardis.px1.camd.lsu.edu.
The data storage disks on tardis are nfs mounted on marpc1 so the data
images are written directly to the processing computer. Tardis now
runs Denzo/Scalepack, XtalView and CNS. We expect to have the Mosflm/CCP4
programs available soon. For data backup tardis has both a CD writer
and a DVD writer. We will soon be supporting 4mm tape and firewire
disks as well. Data may also sent home by ftp although the transfer
speed is not high. The beamline systems are behind a firewall which
restricts incoming connections. There is also a network connection
outside the firewall that is available for users who wish to bring their
own systems for processing and backup. For this connection use the
following settings: Gateway 199.190.250.1
1° DNS 130.39.3.5
2° DNS 130.39.244.30
3° DNS 130.39.250.1
netmask 255.255.255.0
IP address 199.190.250.202
Other notes:
Due to fire
regulations you can't bring wood or cardboard into the experimental hall
where the beamline is located.
So don't pack
things in cardboard boxes. Paper and plastic (such as foam coolers)
are OK.
PX beamline contact person:
Henry D. Bellamy
Associate
Professor - Research
CAMD/LSU
hbellamy@lsu.edu
6980 Jefferson
Hwy. 225-578-9342(voice)
Baton Rouge
LA 70806 225-578-6954 (fax)