All calibration files are automatically saved in the directory with timestamped JSON headers. 6. Data Management | Item | Details | |------|---------| | Raw Data Format | HDF5 ( .h5 ) with detector frames, motor positions, timestamps, and EPICS PVs. | | Metadata | Sample ID, user name, proposal number, environmental parameters (T, P, gas composition). | | Online Reduction | SAXSplot for SAXS, GSAS-II for diffraction, xaspy for XAS. | | Storage | 10 TB local RAID + automatic backup to the facility’s long‑term archive. | | Export | Single‑frame CIF/CBF, CBF for diffraction; .dat/.csv for scattering intensity. | 7. User Access & Proposal Workflow | Phase | Description | |-------|-------------| | Proposal Submission | Submit via the facility’s online portal (deadline 4 weeks before beamtime). Include experiment type, sample environment, detector configuration. | | Safety Review | Completed by the radiation safety officer; requires risk assessment for hazardous chemicals, cryogens, high pressure. | | Pre‑Visit Checklist | Confirm sample mounting hardware, provide CAD drawings if custom mounts are needed. | | On‑site Training | 30‑minute safety briefing + 1‑hour hands‑on tutorial on the Endstation C1 control GUI. | | Beamtime | Remote (via VPN) or on‑site operation; support staff present 24 h for troubleshooting. | | Post‑Processing | Users receive a copy of the raw data and a “quick‑look” reduction; further analysis can be done on the user’s own cluster. | 8. Troubleshooting – Frequently Asked Questions | Issue | Symptom | Quick Fix | |-------|---------|-----------| | Detector Saturation | Over‑exposed spots, flat‑top intensity. | Reduce exposure time, insert additional attenuators, increase sample‑detector distance. | | Beam Drift | Sample moves out of the beam during long scans. | Re‑run find_beam_center.py every 30 min; enable beam position feedback (if available). | | Temperature Instability | ±2 K fluctuations in cryostat. | Verify cryogen flow, check temperature controller PID parameters, ensure good thermal contact. | | Pressure Leak | Pressure reading drops during high‑pressure experiment. | Tighten O‑rings, replace worn seals, check for blocked vent lines. | | Software Crash | GUI freezes, no new frames saved. | Restart the EPICS IOCs ( ioc_restart script), clear the HDF5 buffer ( h5clear ), contact beamline staff if persistent. |
Feel free to copy‑paste the sections into a word‑processor or LaTeX template and then export to PDF. Wherever possible I’ve added placeholders (e.g. ) that you can replace with the actual graphics or tables you have on hand. Endstation C1 – Technical Overview & User Guide Beamline X – [Facility Name] 1. Introduction Endstation C1 is the primary experimental platform on Beamline X (e.g. a hard‑X‑ray diffraction, small‑angle scattering, or spectroscopy beamline). It is designed for high‑throughput, high‑precision measurements on a wide range of sample environments (solid, liquid, gas, cryogenic, high‑pressure, in‑situ). endstation c1 pdf
For any further assistance—whether you need a custom sample environment, help with scripting the acquisition, or All calibration files are automatically saved in the