HEWG Meeting, Key Largo, May 14-17, 2013 SERENA / ELENA Status 1 S. Orsini (1), S. Selci (2), A.M. Di Lellis (3), A. Mura (1), E. De Angelis (1), A. Milillo (1), R. Leoni (4), I. Dandouras (5), J. Scheer (6), P. Wurz (6), C. Austin (5), M. Bassas(5),F. Bertani(2), D. Brienza(3), F. Camozzi (7), S. Cibella (2), L. Colasanti (1), M. Dalessandro (2), M. Gerber (6), F. Lazzarotto (1), F. Mattioli (4), D. Maschietti (3), S. Massetti (1), J.-L. Medale (5), H. Mischler (6), D. Piazza (6), R. Rispoli (1), F. Tominetti (7), N. Vertolli (1), R. Wiesendanger (6). (1) INAF-IAPS,Roma, Italy, (2) ISC-CNR, ROME, Italy, (3) AMDL srl, ROME, Italy, (4) IFN-CNR, ROME, Italy, (5) IRAP, Toulouse, France, (6) University of Bern, Switzerland, (7) CGS, Milano, Italy.

Soft X-ray Ion beam_1keV ELENA is a Time-of-Flight (ToF) sensor, based on the state-of-the art of ultra-sonic oscillating shutter (operated at frequencies of the order of tens of kHz), mechanical gratings and Micro- Channel Plate (MCP) detectors. The purpose of the shuttering system is to digitize space and time when tagging the incoming particles without introducing disturbing detec­tor elements, which may affect the particles trajectory or the energy. This is particularly important in this case, in which neutrals of energies of a few tens of eVs must be detected. ParameterRequiredActual Energy range<0.02 – 5 keV<0.01–5keV(mass dependent) Velocity resolution v/v 10%Down to 10% Viewing angle5 o x70 o 4.5 o x76 o Angular resolution5 o x5 o 4.5 o x4.5 o (actual) 4.5°x2.4° (nominal pixel) Mass resolution M/ M H and heavy species Optimal temporal resolution<5 m40 s Geometric factor G 10 –5 cm 2 sr –5 cm 2 sr Integral Geometric factor –3 cm 2 sr

HEWG Meeting, Key Largo, May 14-17, Crucial ELENA elements Crucial elements to reach the requested performances for TOF ELENA instrument are: 1.the Start element : Shutter System 2.the Stop element : MCP detector (efficiency for low energy particles) these two challenging items are the actual objects of our laboratory activity because they need to be tested with particle beam

HEWG Meeting, Key Largo, May 14-17, ELENA MAIN BOARD Status Green – Power: Local 5V, 3,3V, 1,5V, Primary S/C 28V propagation to MIPA – MIPA DC/DC Outputs +12V, -12V and +5V – 40 MHz Oscillator – Reset Circuitry – DSU communication / Test JIG connectivity – MEMORY: RAM – MEMORY: RAM and EEPROM accesses reading & writing – LOCAL H/K ADC (SPI Bus) – ELENA Driver Board I/F (Power, Gain Control, Osc Clock Setting) – SCU Communication IRQ Unit – TIMER Unit – Boot operated from Emulated 32k AMDL Prom – Partial operation S/W. Elena Main Open work o H/K ADC Levels tuning o ELENA Proxy Board I/F o MIPA optocopler tuning.

HEWG Meeting, Key Largo, May 14-17, ELENA on the AIV CGS bench

HEWG Meeting, Key Largo, May 14-17, ELENA box

ELENA instrument HEWG Meeting, Portovenere, June 12-16, External deflector

HEWG Meeting, Key Largo, May 14-17, The SHUTTER – Model FM-2

ELENA instrument HEWG Meeting, Portovenere, June 12-16, Nanoslit resolution and status 10x10 mm 2 patterned area Si 3 N 4 membrane -1um thick SEM image of the ELENA shutter made of 10x10 mm 2 area, 1µm thick Si 3 N 4 membrane. a) front side view, b) back side view, c) enlarged view of a portion of the shutter d) at-glance comparison of the present (new) shutter design with the previous (old) one.

HEWG Meeting, Key Largo, May 14-17, ELENA Driver & Piggy Status o Assembling to be finalized, Driver part ready o Driver Part Under Testing

HEWG Meeting, Key Largo, May 14-17, ELENA Driver FM

HEWG Meeting, Key Largo, May 14-17, ELENA shutter FM1 performances: test in conventional configuration Test parameters Beam: He+ beam E= 1keV Shutter FM1 Freq=39.06KHz Pk-pk=10V Offset= 1V Driver system: Sinusoidal signal from conventional Frequency generator Up: - Orange trace: sinusoidal input Down: MCP ph signal of particles passing through the membranes during shutter perfomances

HEWG Meeting, Key Largo, May 14-17, ELENA shutter FM1 performances: Example of Zero crossing for TOF Start signal Test parameters Beam: He+ beam E= 1keV Shutter FM1 Freq=39.06KHz Pk-pk=10V Offset= to be optimized Driver system: ELENA Breadboard Up: - Orange trace: input frequency from Driver board - Yellow trace: digital encoded motion of the shutter Down: MCP signal of particles passing through the membranes during shutter perfomances

HEWG Meeting, Key Largo, May 14-17, ELENA shutter FM1 performances: test in ELENA BB configuration Test parameters Beam: He+ beam E= 1keV Shutter FM1 Freq=39.06KHz Pk-pk=10V Offset= 1V Driver system: ELENA BreadBoard Up: -Yellow trace: oscillating input generated by Driver board -Orange trace: analogic encoded motion of the shutter Down: MCP signal of particles passing through the membranes during shutter perfomances

ELENA instrument HEWG Meeting, Portovenere, June 12-16, Internal Deflector

ELENA instrument HEWG Meeting, Portovenere, June 12-16, MCP CONFIGURATION

HEWG Meeting, Key Largo, May 14-17, ELENA Proxy Test Report ELENA Proxy Status o Assembling completed o Test in progress

HEWG Meeting, Key Largo, May 14-17, ELENA Proxy FM

HEWG Meeting, Key Largo, May 14-17, In summary….. ELENA PFM is in advanced manufacturing phase Crucial elements: FPGA optimization Shutter membranes alignment External/Internal deflector efficiency Science data flow Instrument ful characterization (by ELENA BB) ELENA & SERENA delivery: mid-September 2013