5/15/98
laboratory? I am particularly concerned about isolation from vibration and
climate control. Thank you.
Paul Grover
Pbgrover@aol.com
Ronald H Alderson
Vol 4 in "Practical Methods in Electron Microscopy" Audrey M. Glauert,
Editor,
Library of Congress # 73-94298
North-Holland ISBN 0 7204 4259 1
/Elsevier ISBN 0 444 10807 6
I have used it in designing 3 laboratories. If the architects / engineers
had only read the copies I gave them, all would have gone much better!
*****************************************************
Mel Dickson,
Director.
Electron Microscope Unit,
University of New South Wales.
Sydney NSW 2052 Australia
Phone (+612) 9385-6383
Fax (+612) 9385-6400
Website <http://srv.emunit.unsw.edu.au>
>participate in the planning of the reconstruction of our faculty-building I
>started very early to draw the floor-plans for our premises. I did not want
>to go back to the cellar and reserved space for us on the fourth and fifth
>floors (the supporting structure of the building is cast on-site and very
>steady).
>I had many fights with the architects etc. but got most of my wishes done.
>I have to admit that there were real fights - I had to threat them with
court.
>After all that fight and almost living in the construction site we got a
>laboratory which we have been fairly satisfied. Naturally there have been
>changes afterwards but is there any laboratory without changes during 15
>years?
>If anyone is interested you are wellcome to pay a visit to our laboratory.
>
>Regards,
>Jouko
>
>
>Jouko K. Mäki, Ph.D., Laboratory Manager
>University of Turku, Laboratory of Electron Microscopy
>Kiinamyllynkatu 10 FIN-20520 TURKU FINLAND
>Tel: +358 (0)2 333 7318 GSM: +358 (0)40 505 2521 FAX: +358 (0)2 333 7380
>http://www.utu.fi/med/em/index.html
>participate in the planning of the reconstruction of our faculty-building I
>started very early to draw the floor-plans for our premises. I did not want
>to go back to the cellar and reserved space for us on the fourth and fifth
>floors (the supporting structure of the building is cast on-site and very
>steady).
>I had many fights with the architects etc. but got most of my wishes done.
>I have to admit that there were real fights - I had to threat them with
court.
>After all that fight and almost living in the construction site we got a
>laboratory which we have been fairly satisfied. Naturally there have been
>changes afterwards but is there any laboratory without changes during 15
>years?
>If anyone is interested you are wellcome to pay a visit to our laboratory.
>
>Regards,
>Jouko
>
>
>Jouko K. Mäki, Ph.D., Laboratory Manager
>University of Turku, Laboratory of Electron Microscopy
>Kiinamyllynkatu 10 FIN-20520 TURKU FINLAND
>Tel: +358 (0)2 333 7318 GSM: +358 (0)40 505 2521 FAX: +358 (0)2 333 7380
>http://www.utu.fi/med/em/index.html
I am looking for suggestions on features we should consider for an EM lab
renovation. We are currently in the design process for renovating a
building which will house two TEMS, 2 SEMs, an AES, and a darkroom. With
this opportunity to design the EM labs, we want to take all reasonable
precautions and make the necessary improvements to optimize these areas.
This includes necessities for EM operation as well as conveniences.
While this currently unoccupied building readily passes vibrational and
magnetic field tests, I am trying to minimize the impact of the labs,
offices, and electrical/ventilation systems which will surround the EM
labs. Alderson's book (suggested on the list a while back) was a great
help for the initial design stages. What suggestions do you have either
for the design of the laboratories or for the related equipment? While my
primary interest is for the TEM labs, I would welcome any suggestions for
the other EM rooms or dark room as well.
One major concern I have is with mechanical vibration isolation. We would
like to limit a priori the effects of the surrounding labs and services.
Any suggestions which would limit the effects of mechanical vibrations at
the TEMs, or reduce the level of ambient vibrations, would be particularly
helpful.
Richard Fonda
_____________________________________________________________
Richard W. Fonda Naval Research Laboratory
(202) 767-2622 Code 6324
(202) 767-2623 fax Washington DC 20375
one prescription for minimizing mechanical vibrations. If the building and
ground is very rigid, it will transmit vibrations due to traffic and wind,
so you must isolate the equipment with, e.g., a pneumatic platform, but if
the building and ground are not rigid, and do not transmit vibrations read-
ily, you might need to anchor the equipment so that, e.g., air conditioning
vibrations do not affect the EMs. Furthermore, the frequency spectrum of
the vibrations is important. Our HVEM responds greatly to 20 Hz vibrations,
but not to ~22 Hz vibrations. Sometimes a spring-mass-spring type of moun-
ting--as we use for our vacuum pumps--will lower transmission of vibrations,
and it can be tuned to damp specific frequencies. Good luck.
Yours,
Bill Tivol
tivol@wadsworth.org
Several years ago, we were in a similar situation. The company
renovated a vacant building so all us R&D folk could play in the same
place. Of course it passed inspection - there was nothing in it. After
moving, we found that we ran into numerous problems with EM fields for a
variety of reasons. We eventually found the sources and had the
problems corrected, but with quite a bit of unnecessary expense and down
time.
If I had to do it again, I'd bring in the vibration and field experts
during the design stage.
If you'd like to, contact me at the address below and I can give you a
reference.
Harold J. Crossman
Senior Scientist
OSRAM SYLVANIA INC.
Lighting Research Center
71 Cherry Hill Dr.
Beverly, MA 01915
(978) 750-1717
crossman@osi.sylvania.com
>
one way of isolating equipment (in AFM and other scanning probe
microscopies) which may or may not work for your situation is to suspend
the equipment from the ceiling, designing the damping system into the
suspension system...?
-Mike
merock@du.edu
Richard
of flooding. This may be natural flooding (when the drains block with leaves
in autumn/fall), the lab above may often flood or someone leaves the tap on
in the darkroom. Precautions may range from a pair of wellies and sandbags
to sills and sealable doors (I've seen something like that in a London
University). But at the very least it should be possible to isolate the
electrics to microscope and lab in an emergency.
Flooding is less likely than vibration and magnetic fields but it does
happen and can be disastrous.
Malcolm Haswell
e.m. unit
University of Sunderland
UK