1. M.Moll, M.Silari, H.Vincke – 3.April 2008 -1- Mixed field irradiation -- Who answered ?  In total 36 forms filled / 34 persons answered: 38% 62% CERN: mainly LHC related topics CERF: beside LHC topics also dosimetry topics for accelerators, aircraft and space applications

2. Beam parameters required  Preferred momentum of primary beam:  20 % 450 GeV/c ( 1 strong preference)  20 % 24 GeV/c ( 1 strong preference)  60% no preferences  Fast or slow extraction:  69 % slow extraction Out of which 33% would also use pulsed fields  11% require both  3% pulsed extraction only  17% no preferences M.Moll, M.Silari, H.Vincke – 3.April 2008 -2-

3. Radiation field conditions required (I)  Field type required:  Neutron field perpendicular to target: 83%  Field at different angles behind shielding: 42%  High dose radiation fields: 33%  Muon field: 14%  Others 14% (e.g.: TOF neutrons, high energy mono energetic neutrons) M.Moll, M.Silari, H.Vincke – 3.April 2008 -3- Higher percentage than 100 % due to possibility of multiple choice Comments: LHC like environment was desired very often as source field

4. Radiation field conditions required (II)  Maximum integrated dose / neutron fluence required:  1E7 Gy /1E16 n/cm 2  Maximum dose and fluence rates  10 Gy/s / 1E11 n/(cm 2 s) Comments: concerning the fluence additional information was asked by the users (1 MeV equivalent neutrons, hadrons > 20 MeV, detailed spectra) M.Moll, M.Silari, H.Vincke – 3.April 2008 -4-

5. Type and purpose of tests  Type of equipment  44% Detector and detector components  33% Radiation monitors and dosemeters  11% Material tests  6% Accelerator components  Type of test  37% Detector and equipment tests  33%Dosemeter calibrations  25%Radiation hardness test Comments: many LHC detector components and neutron dosimetry devices are tested for calibration, response or hardness M.Moll, M.Silari, H.Vincke – 3.April 2008 -5-

6. Other requirements (I)  Size and weight  smaller1m and 25 kg:97%  Size of field:  Smaller than 25 cm x 25 cm72%  Smaller than 1 m x 1 m25% M.Moll, M.Silari, H.Vincke – 3.April 2008 -6-

7. Other requirements (II)  Infrastructure available (top five)  Electricity (81%)  Read out connections (61%)  Beam extraction signal (53%)  Preparation (42%) and storage areas (31%)  Others: Temperature controlled environment, non flammable gases … Scanning system for beam (27%; not possible since field comes from target!!)  Infrastructure provided by user  64% would need temporary infrastructure (mainly electronics and detectors used for the experiment)  33% don’t need additional infrastructure M.Moll, M.Silari, H.Vincke – 3.April 2008 -7-

8. Beam time requirements  Annual beam times  One day:6%  Less than 1 week: 44%  1 – 2 weeks:17%  2 – 3 weeks:14%  3 – 4 weeks:6%  Up to 2 month:8%  Longer:5% Comment: required beam time depends very often on dose/fluence rate available  Required periods  One or two periods: 75%  More periods: 14% M.Moll, M.Silari, H.Vincke – 3.April 2008 -8-