Results of the 2014 User Survey

These are the current results of the 2014 user survey. Latest update: Nov. 16th 2014.


Be cautious!

The numbers are not straight forward to interpret, so please spend a minute reading through the page explaining the user counting procedure.

We were counting users which were active during the time 01/08/2012-31/07/2014. We used a 2 year time span to avoid effects from proposal submission deadlines; to reduce the influence of downtime for example from construction work; to also include users which come on a regular basis, but not every year. Some tests show, that a one year survey would come up with very similar numbers, so the 2 year timespan does not so much affect the total number of users but rather levels out exceptional events.

The definition of an active user slightly varies from facility to facility. In principle, we consider anyone (including facility staff) an active user who was during that time span

  • on a proposal submitted during that time, including rejected or currently reviewed proposals ... or
  • on a proposal submitted prior to 08/2012, but which entitles for beamtime during the time span ... or
  • on a beamtime application ... or
  • visiting the facility as a user

The definition of an active user does not have to be absolutely identical for each facility, in case a user management system can not exactly match the criteria. For example, some facilities might not distinguish between proposal and beamtime application. Some facilities don't record in-house users the same way as external users. So the numbers given below might well be very inaccurate in some cases, but we try of course to minimize potential errors. An entry saying, facility A has 2345 active users during the 2 year time span, just means: facility A had at least 2345 users, but might actually be much more.


Current status of the user survey:

The table shows the number of the hashes received and the number of unique entries. Duplicates have been filtered out, which results in the difference between number of users and hashes. Numbers in brackets are for the individual photon/neutron sources in cases where sites operate more than a single source.

Partner Facilities #of hashes #of users #of countries Link
ALBA/CELLS ALBA (Synchrotron) 1303 1303 30
DESY PETRAIII (Synchrotron) + FLASH (FEL) 3680 3683 43
DIAMOND DLS (Synchrotron) 10445 10445 59
ELETTRA ELETTRA (Synchrotron) 3422 3422 60
ESRF ESRF (Synchrotron) 10786 11009 55
MLZ MLZ (Neutron) 1432 1430 43
ILL§ ILL (Neutron) 4151 4138 50
CEA LLB (Neutron) - - -
STFC ISIS (Neutron) 3406 3406 49
PSI SLS (Synchrotron)
SINQ (Neutron)
3981
1424
3991
1427
45
44
SOLEIL SOLEIL (Synchrotron) 5134 5147 53
HZB* BERII (Neutron)
BESSYII (Synchrotron)
BERII+BESSYII
237
838
4171
237
838
4114
53
SLAC LCLS (FEL) 1123 1123 -
ORNL SNS (Neutron) 3723 3723 43
TOTAL 10 Photon Sources
6 Neutron Sources
58109 43503 95
(*) Data separating neutron and photon users are currently only available for 2014! HZB numbers cover the entire period!
(§) ILL had an extended shutdown period (06/2013-06/2014) leading to an unusually low number of users for the time covered by the survey!

Basic numbers


Total number of hashes: 55070      Photons: 40712      Neutrons: 14358
Total number of unique users: 41665      Photons: 32257      Neutrons: 11976

Using only Neutrons: 9408      or 22.5% of all unique users
Using only Photons: 29689      or 71.2% of all unique users
Using Neutrons and Photons: 2568      or 6.1% of all unique users

Using more than one facility: 9091      or 21.8% of all users
Using more than one Photon source: 6343      or 19.7% of all photon users
Using more than one Neutron source: 1719      or 14.6% of all neutron users

Total number of returning users: 19030(43.7%)      Photons: 14740 (45.7%)      Neutrons: 4323 (36.1%)
Total number of new users: 24473 56.3(%)      Photons: 17517 (54.3%)      Neutrons: 7653 (63.9%)



Unique and Common Users

Currently there are only hashes available for US facilities SNS and LCLS, which make 4840 out of the more than 35.000 users. The comparison between US and EU is therefore not very representative. However, it's remarkable that from those 4840 users from US facilities, 1091 or 22.5% of the US users are also active users at European light- and/or neutron sources.

Photon Sources
Facility # Users Users using at least one other Photon Source Users using at least one Neutron Source
ALBA 1303 679 (52.1%) 122 (9.3%)
BESSY II 838 418 (49.8%) 76 (9.0%)
DESY 3680 1579 (42.9%) 343 (9.3%)
DLS 10445 2598 (24.8%) 1136 (10.8%)
ELETTRA 3422 1171 (34.2%) 149 (4.3%)
ESRF 10786 4242 (39.3%) 1165 (10.8%)
LCLS 1123 329 (29.2%) 17 (1.5%)
SLS 3981 1637 (41.1%) 365 (9.1%)
SOLEIL 5134 2145 (41.7%) 349 (6.7%)
Neutron Sources
Facility # Users Users using at least one other Neutron Source Users using at least one Photon Source
BER II 237 162 (68.3%) 86 (36.2%)
MLZ 1430 601 (42.0%) 353 (24.6%)
ILL 4138 1252 (30.2%) 1304 (31.5%)
ISIS 3406 891 (26.1%) 1052 (30.8%)
SINQ 1424 614 (43.1%) 501 (35.1%)
SNS 3723 581 (15.6%) 327 (8.7%)


Number of Users shared between facilities
  ALBA BERII BESSYII DESY DLS ELETTRA ESRF MLZ ILL ISIS LCLS SINQ SLS SOLEIL SNS neutron photon all
ALBA 1303 5 43 90 274 128 356 8 83 36 2 23 124 161 7 122 679 1303
BER II 5 237 27 28 20 0 42 66 104 50 0 75 22 7 37 162 86 237
BESSY II 43 27 838 128 96 95 143 16 31 16 28 29 119 100 11 76 418 838
DESY 90 28 128 3680 396 255 901 110 167 92 151 82 326 246 63 343 1579 3680
DLS 274 20 96 396 10445 297 1606 82 485 763 70 144 559 526 124 1136 2598 10445
ELETTRA 128 0 95 255 297 3422 480 21 99 41 68 14 218 379 12 149 1171 3422
ESRF 356 42 143 901 1606 480 10786 203 731 356 102 203 899 1390 155 1165 4242 10786
MLZ 8 66 16 110 82 21 203 1430 409 167 3 222 52 46 158 601 353 1430
ILL 83 104 31 167 485 99 731 409 4138 606 3 384 130 239 316 1252 1304 4138
ISIS 36 50 16 92 763 41 356 167 606 3406 9 236 101 84 267 891 1052 3406
LCLS 2 0 28 151 70 68 102 3 3 9 1123 1 79 44 6 17 329 1123
SINQ 23 75 29 82 144 14 203 222 384 236 1 1424 250 65 185 614 501 1424
SLS 124 22 119 326 559 218 899 52 130 101 79 250 3981 366 64 365 1637 3981
SOLEIL 161 7 100 246 526 379 1390 46 239 84 44 65 366 5134 40 349 2145 5134
SNS 7 37 11 63 124 12 155 158 316 267 6 185 64 40 3723 581 327 3723

neutron 122 237 76 343 1136 149 1165 1430 4138 3406 17 1424 365 349 3723 10257 2606 11976
photon 1303 86 838 3680 10445 3422 10786 353 1304 1052 1123 501 3981 5134 327 5910 25914 32257
all 1303 237 838 3680 10445 3422 10786 1430 4138 3406 1123 1424 3981 5134 3723 12570 24923 41665

Graphical view (chord chart) on common user


The image represents the total number of users per facility and common users. Only one connection is shown between each two sites. The length of the facility arc represents the number of users of the facility. The thickness of the arc between facilities relates to the number of common users.

The image represents the the percentage of common users. The length of the facility arc is identical representing 100%. The thickness of the arc between facilities relates to the ratio of common users versus total users for this facility in percent.

Where do our users come from?

Currently we count users with home institutions located in 82 different countries, including places like New Caledonia or Botswana.
 

 
 
There is only a small number of countries without any scientists registered at any of the neutron or photon sites.
 

 

Yet another human development index?

Comparing the Human Development Index with the location of the users of the neutron and photon sources reveals an amazingly similar pattern
 

 



 

Joint publications

Each facility runs a database to record publications, which are based on experiments pursued at the facility. Simply looking for identical entries in the publication databases gives a rough estimate of publications citing more than a single facility. Identity of publications is currently limited to identical DOIs. Currently we count roughly 35000 unique publications (with DOIs!) out of which about 10% are common between at least two facilities. Joint publications are obviously much more sparsely distributed than common users, only 0.9% of the publications can be found in more than 2 publication databases. One reason might be, that scientists have to register publications in each publication database separately, which might become a nuisance for productive scientists actually running experiments at several facilities. Currently, there is no other way of linking a publication to a scientific instrument used.

 

Lab Facilities common publications
APS/ANL APS (Synchrotron) has  7.8% of all its publications (dois) in common with at least one other facility
HZB BESSYII (Synchrotron) + BERII (Neutron) has 18.0% of all its publications (dois) in common with at least one other facility
DLS DLS (Synchrotron) has 20.6% of all its publications (dois) in common with at least one other facility
DESY DORISIII+PETRAIII (Synchrotron) + FLASH (FEL) has 17.6% of all its publications (dois) in common with at least one other facility
ESRF ESRF (Synchrotron) has 18.9% of all its publications (dois) in common with at least one other facility
ILL ILL (Neutron) has 32.0% of all its publications (dois) in common with at least one other facility
SLAC LCLS (FEL) has 27.7% of all its publications (dois) in common with at least one other facility
ORNL SNS (Neutron) has 17.9% of all its publications (dois) in common with at least one other facility
ELETTRA ELETTRA (Synchrotron) has 11.2% of all its publications (dois) in common with at least one other facility
PSI SLS (Synchrotron) + SINQ Neutron) has 20.1% of all its publications (dois) in common with at least one other facility
STFC ISIS (Neutron) has 26.8% of all its publications (dois) in common with at least one other facility
SOLEIL SOLEIL (Synchrotron) has 27.7% of all its publications (dois) in common with at least one other facility
MLZ MLZ (Neutron) has 28.2% of all its publications (dois) in common with at least one other facility
ALS ALS (Synchrotron) has 12.2% of all its publications (dois) in common with at least one other facility


 

Graphical view on publications referring to more than one facility


The image represents the total number of DOIs per facility and common DOIs. Only one connection is shown between each two sites. The length of the facility arc represents the number of DOIs harvested for the facility. The thickness of the arc between facilities relates to the number of common DOIs.

The image represents the the percentage of common DOIs. The length of the facility arc is identical representing 100%. The thickness of the arc between facilities relates to the ratio of common DOIs versus total DOIs for this facility in percent.

The matrix below shows which facilities have common publications recorded.

DLS DESY ELETTRA ESRF FELIX HZB ILL ISIS MLZ PSI SOLEIL ALS APS LCLS NSLS SNS CLS LNLS SSLS SACLA
DLS o + + + - + + + + + + + + + + - + - - -
DESY + o + + - + + + + + + + + + + + + + + -
ELETTRA + + o + - + + + - + + + + + + + + - - -
ESRF + + + o - + + + + + + + + + + + + + - -
FELIX - - - - o - - - - - + + - - - - - - - -
HZB + + + + - o + + + + + + + + + + + - - -
ILL + + + + - + o + + + + + + - + + - - - -
ISIS + + + + - + + o + + + + + - + + - - - -
MLZ + + - + - + + + o + + + + - - + - - - -
PSI + + + + - + + + + o + + + + + + + - - +
SOLEIL + + + + + + + + + + o + + + + - + + - +
ALS + + + + + + + + + + + o + + + + + + + +
APS + + + + - + + + + + + + o + + + + - - -
LCLS + + + + - + - - - + + + + o + - - - - +
NSLS + + + + - + + + - + + + + + o + + - - +
SNS - + + + - + + + + + - + + - + o - - - -
CLS + + + + - + - - - + + + + - + - o + - -
LNLS - + - + - - - - - - + + - - - - + o - -
SSLS - + - - - - - - - - - + - - - - - - o -
SACLA - - - - - - - - - + + + - + + - - - - o

Procedure

Most facilities run publication databases where users register publications related to experiments at the facility. The databases are either openly accessible or accessible for registered users. Where possible only journal articles have been retrieved. Since a direct matching of entries is most simple with DOIs as unique identifiers, only articles with DOIs in the respective database have been considered. Some publication databases do not record (or expose) DOIs at all. In these cases, DOIs were retrieved with CrossRefs search facilities. Due to the limitations of the procedure, no absolute numbers are being reported here (though it's easy enough to retrieve number of the databases). The collection of publications is still incomplete and will be continued.